SBG Systems has expanded its product line with the launch of the Stellar-40, a modular and scalable inertial navigation system (INS) designed for demanding environments and mission-critical applications.
Designed for land, air and marine platforms, the Stellar-40 integrates a tactical-grade IMU, a GNSS receiver and advanced sensor fusion algorithms within a compact and rugged enclosure. The system is designed to provide reliable navigation performance in high-vibration, high-dynamics and electronically challenging environments.
The development of the Stellar-40 focused on two main objectives: increasing resilience in harsh operational conditions and improving production scalability. To overcome the vibration sensitivity commonly encountered in defense and industrial applications, SBG Systems implemented an innovative three-level mitigation approach:
Sensor-level isolation: Dampers integrated directly at the IMU sensor level reduce vibrations at the source.
Resonance-free enclosure: A specialized housing engineered to drastically minimize resonance and internally induced vibrations.
Structural isolation: Custom external dampers designed to isolate the unit from harsh vehicle dynamics.
This architecture supports stable system behavior in dynamic environments.
Beyond mechanical robustness, the Stellar-40 addresses modern electronic warfare challenges. The system incorporates a high-performance GNSS receiver designed to actively mitigate advanced jamming and spoofing threats. When GNSS signals are degraded or unavailable, the system relies on multi-sensor fusion and dead-reckoning capabilities to maintain navigation continuity.
Positioned as the heavy-duty counterpart to the Ekinox Micro, the Stellar-40 introduces a revised mechanical and electronic design intended to simplify integration and manufacturing processes. The system is suited for defense programs, robotics platforms, UAVs and autonomous systems requiring compact, scalable navigation solutions.
“Stellar-40 was developed with scalability and integration flexibility as key priorities,” said Kaoutar, product manager at SBG Systems. “The design aims to support a broad range of platforms while keeping large-scale production in mind. This product brings high-end resilience against vibrations, jamming and spoofing into a box that teams can completely trust in real-world operations.”
With the introduction of the Stellar-40, SBG Systems continues to expand its range of inertial navigation solutions for professional and industrial applications.
The Stellar-40 is designed for a wide range of applications across defense and autonomous systems. It supports platforms such as UAVs, robotics and other autonomous vehicles that require compact and scalable navigation solutions. Its revised mechanical and electronic design simplifies integration and manufacturing, making it well-suited for both large-scale production programs and demanding operational environments.
SBG Systems has announced the upcoming release of the Pulse-20 inertial measurement unit (IMU) and the commercial availability of the Pulse-80, expanding its IMU product portfolio to three performance levels.
The Pulse-20, described as a sub-miniature, industrial-grade IMU, will be available before year-end. The company now offers three IMU models designed for different performance requirements: the Pulse-20, Pulse-40 and Pulse-80.
Pulse-20 IMU
The Pulse-20 features built-in magnetometers for nine-degree-of-freedom measurements and includes CAN communication alongside serial connectivity. The compact unit targets applications requiring high performance in limited space.
The Pulse-40 represents tactical-grade performance, while the Pulse-80 delivers what the company calls FOG-level performance without the size, weight and cost associated with traditional fiber-optic gyroscopes.
All three models share the same software interface and undergo temperature calibration and qualification testing, according to the company.
The IMUs target multiple industries including unmanned vehicles, munitions guidance and navigation, electro-optical systems, mobile and surveying applications.
The Pulse-80 is currently available worldwide. The Pulse-20 will become commercially available later this year.
Read a roundup of recent products in the GNSS and inertial positioning industry from the May 2025 issue of GPS World magazine.
SURVEYING
Integrated Navigation Solution Ideal for inspection and survey applications
Photo: Teledyne
Teledyne Compact Navigator is an ultra-compact autonomous integrated navigation system engineered for subsea and surface vehicles. It is ideal for small vehicles, enabling inspection and survey operations on compact platforms. The system is offered in two depth-rated models, one capable of operating at 4,000 m and another at 300 m. The Compact Navigator consumes less than 7 watts of power, extending mission duration by conserving energy. The system operates fully autonomously, eliminating the need for external aiding or operator intervention. Advanced phased array Doppler Velocity Log technology enhances performance while allowing the device to be mounted on an autonomous underwater vehicle or ship hull.
The Compact Navigator supports a broad range of applications, including autonomus underwater vehicles, shallow water surface navigation, operations in GNSS-denied environments and dynamic positioning for surface vehicles. The system provides true North-seeking gyrocompass-grade performance, and its web-based user interface supports integration, operation and troubleshooting. It is factory-calibrated and offers a battery backup option for reliability in demanding conditions. The system operates independently of satellite signals, making it resistant to jamming or signal loss. This capability is significant for shallow water navigation, where GNSS-based systems may be unreliable.
3D Reality Capture Solution Can be used across various industries
Photo: Faro
FARO Blink, a new 3D reality capture solution, is designed to make collecting and utilizing 3D data more accessible and efficient. It centers on software-driven technology integrating advanced visualization and automated workflows through the FARO Sphere XG Digital Reality Platform. This integration aims to simplify operations and deliver faster, more actionable insights for users across various industries.
FARO Blink is tailored for professionals in fields such as surveying and construction. It offers high-quality visualization and can streamline workflows, allowing teams to efficiently capture, view and share 3D data, thereby enhancing project progress and collaboration.
The MS400C is a fully integrated multibeam echosounder designed for uncrewed surface vessels. The new system combines sonar processing, inertial navigation, GNSS positioning and sound velocity sensing into a single unit.
The MS400C seeks to address deployment challenges faced by USV operators during hydrographic surveying. Its compact, lightweight design allows direct mounting on small platforms. Installation involves connecting a few cables to the IPC and power supply and to the primary and secondary GNSS antennas. With preconfigured spatial relationships, operators can deploy and start surveying quickly, reducing configuration errors and ensuring consistent data quality.
Equipped with Auto Survey functionality, the system calibrates parameters based on water conditions, which streamlines pre-survey procedures. Real-time roll compensation and attitude data from the internal measurement unit, combined with sound velocity profiling, ensure high-fidelity depth measurements, even in dynamic conditions. Designed for autonomous and remotely operated survey platforms, the MS400C supports data collection in confined waterways.
The SurveyPod RTK/PPK GNSS system is built for professionals in surveying, agriculture, mining and construction. The system integrates GPS, GLONASS, Galileo and BeiDou signals for improved satellite visibility and accuracy, even in harsh environments.
Powered by a CORS Network, SurveyPod offers real-time, centimeter-level positioning ideal for high-precision applications. The device supports tilt compensation for reliable data collection at angles and boasts up to 16 hours of battery life, making it ideal for extended field operations. With this launch, Nibrus Technologies is expanding its survey equipment portfolio, offering a Made-in-India GNSS solution to the global market.
This MEMS-based north-seeking inertial measurement unit (IMU) operates independently of GNSS. It can achieve a heading accuracy greater than 1° secant latitude without GNSS assistance. When integrated with GNSS and SBG Systems’ navigation algorithms, it can achieve INS heading accuracy greater than 0.01°.
Measuring 52 x 52 x 36 mm and weighing less than 150 g, it consumes only 2 watts of power. It offers long-term reliability in demanding conditions, and its ITAR-free status allows unrestricted global deployment. SBG Systems also has developed a new pure north-finding algorithm capable of rapid initialization in both static and dynamic conditions within one minute, as well as an advanced GNSS/INS fusion algorithm that delivers exceptional single-antenna heading accuracy even in low-dynamic environments.
The IMU is particularly suited for subsea applications, including remotely operated vehicles and autonomous underwater vehicles, as well as geospatial and marine surveying tasks requiring precise single antenna heading accuracy.
The first off-the-shelf solutions are expected to be available by early 2026. SBG Systems
Post-Processing Software With upgraded features
Photo: SBG Systems
Qinertia 4.2 is an updated version of SBG Systems’ post-processing software for GNSS and INS data. One of the notable additions is the beta version of Precise Point Positioning Fixed Ambiguity, which offers centimeter-level accuracy processing without the need for a base station. The update also includes a new RTS smoothing option, the Trajectory Smoother, which enhances INS processing by removing artifacts while maintaining precision. Another feature is the standalone Lever Arm Estimation Tool, now available as a separate application with a simplified interface. The Advanced Virtual Base Station Network Creation has been enhanced with improved base station quality indicators to increase reliability.
It is compatible with the New Ellipse series and supports Teledyne Intrepid INS. The software now offers faster processing speeds, enhanced geodesy functionalities such as base station velocity analysis, and updated tools for assessing processing quality through new status plots. It also supports the latest firmware versions of Ekinox, Apogee, Navsight and Quanta systems. SBG Systems
MACHINE CONTROL
GNSS Receiver and INS System For machine guidance
Photo: Septentrio
The AsteRx RB3 GNSS receiver and the AsteRx RBi3 GNSS/INS system are designed to operate in extreme environments. They feature IP69K-rated housings and components that have undergone ISO-standard testing.
The technology offers durability under heavy shocks, vibrations and challenging environmental conditions, making it suitable for demanding applications such as construction, mining and port automation.
The AsteRx RB3 and RBi3 utilize multi-frequency GNSS technology to deliver precise, centimeter-level positioning even in environments where GNSS signals are typically difficult to maintain. The receivers can be mounted externally on heavy machinery or integrated into chassis systems, offering flexibility in placement and simplifying installation.
The AsteRx RBi3 incorporates FUSE+ technology, which combines a high-performance GNSS engine with an industrial-grade inertial sensor. This integration provides accurate orientation data, such as heading, pitch and roll, alongside reliable positioning. In dual-antenna configurations, the receivers deliver sub-degree GNSS heading accuracy immediately upon initialization. The AsteRx RB3 and RBi3 are ideal for machine guidance in industries requiring rugged equipment to maintain precision under extreme conditions.
Handheld Reality Capture Solution For maximum mobility
Photo: Topcon Positioning
Designed for mass data solutions, the CR-H1 utilizes PIX4Dcatch, a specialized application with integrated lidar that runs on iPhone devices. It collects images and employs photogrammetry to create detailed, full-color 3D point clouds. The iPhone connects to Topcon’s HiPer CR receiver, enabling the application to collect georeferenced images. The receiver and iPhone are mounted on a specialized handle designed and manufactured by Topcon so that users can capture point clouds without a tripod.
The CR-H1 can be used for utilities and subsurface mapping, construction verification and earthworks, civil engineering and site verification, land surveying and forensics and 3D data capture. Topnet Live subscriptions are available for the CR-H1, providing real-time GNSS corrections that deliver higher-quality point clouds.
Handheld GPS Device Can provide up to 200 hours of GPS navigation on a single charge
Photo: Garmin
The Garmin eTrex Solar is a handheld GPS device with a built-in solar charging feature. This feature allows for potentially unlimited battery life in optimal sunlight conditions. Even without direct solar input, the device can provide up to 200 hours of GPS navigation on a single charge, making it suitable for extended trips with limited access to power.
The device supports GPS, GLONASS, Galileo, QZSS, IRNSS and Beidou. It features a rugged design, an IPX7 water resistance rating, and a compact, lightweight body that can be attached to a backpack or worn around the neck. Users can import GPX files and navigate to waypoints, courses and geocaches. It also includes a three-axis compass and can store up to a thousand waypoints, 50 courses and 200 activities.
Users can connect the eTrex Solar to their smartphones through the Garmin Explore app, which enables additional features such as geocaching details, weather updates, software updates, trip planning, and cloud storage syncing.
New Product Offerings Now featuring marine GNSS antennas
Photo: Geo-matching
Geo-matching has expanded its product database to include GNSS antennas. The initial marine GNSS antennas featured in this new category are the VP6300 from Calian GNSS, formerly Tallysman, and the AV34 from Trimble.
Geo-matching features detailed information on more than 1,300 products across 63 categories for surveying, navigation and machine guidance. The website is designed to guide users through complex product specifications, offering access to brochures, case studies, product videos and professional reviews. Among the many categories available on Geo-matching.com are hydrographic processing software, GNSS receivers, GIS software, inertial navigation systems, total stations, UAVs, sidescan sonars, imaging sonar and more. The platform encourages users to browse its extensive catalog, upload new products, leave reviews and register their companies to add products to the database.
Mapping UAV With a new “Smart Return-to-Home” feature
Photo: Flyability
Flyability has introduced a “Smart Return-to-Home” (RTH) feature for its Elios 3 UAV, designed to enhance its autonomous capabilities. This feature allows the UAV to return to its take-off point using the shortest available path while avoiding obstacles in real time.
During flight, Smart RTH monitors battery levels through a new flight management gauge, notifying the pilot when it is time to return. The feature is activated via Flyability’s Cockpit flight app, and pilots can take manual control at any point. By automating the return process, the system helps pilots focus on inspections without concerns about battery management or navigation in complex environments. Smart RTH uses lidar scans to generate a flight plan that the UAV executes independently.
The AirWarden Remote ID Receiver detects and decodes Remote ID signals broadcast by UAVs. It is designed for organizations and authorities that need to monitor UAV activity for safety, security and compliance with regulations.
It decodes the information transmitted by UAVs in accordance with FAA and other regulatory standards. The data it captures includes the UAV’s identification number, its precise location (latitude, longitude and altitude), the takeoff location, operator location if available, timestamps, and other relevant metadata.
The AirWarden can be deployed as a standalone unit or integrated into larger security and monitoring systems. Users interact with the system through a web-based or software interface that facilitates live monitoring, alert management, and data analysis.
Additionally, the AirWarden can integrate seamlessly with other security infrastructure, such as video surveillance and access control systems. This integration seeks to improve how security teams automate responses and coordinate actions when unauthorized or suspicious drone operations are identified.
Read a roundup of recent products in the GNSS and inertial positioning industry from the April 2025 issue of GPS World magazine.
OEM
INS With three additional GNSS receiver variants
Photo: Topcon
SBG Systems has upgraded its inertial navigation systems — Ekinox, Apogee and Navsight — with new GNSS receiver options. The latest update introduces three additional GNSS receiver variants.
These include:
Marinestar, which supports Fugro Marinestar, delivering precise point positioning (PPP) with centimeter-level accuracy via L-band corrections without requiring a base station. It is optimized for marine applications.
HAS Ready / NavIC, which includes Galileo E6 support for the upcoming Galileo High Accuracy Service (HAS), offering free decimeter-level PPP corrections globally. Additionally, it supports the Indian NavIC system.
Centimeter-Level Augmentation Service, which is tailored for users in Japan; this variant utilizes QZSS L6 signals to provide free PPP corrections without external services.
All GNSS variants integrate seamlessly with SBG Systems’ antenna portfolio and Qinertia post-processing software. Users select the appropriate GNSS variant at purchase to match their operational requirements. These enhancements aim to provide versatile solutions across diverse industries while ensuring reliable performance.
The GNSS receivers in the Teseo VI family use multi-constellation and quad-band signal processing on a single chip, achieving centimeter-level accuracy for various applications. The Teseo VI family includes the STA8600A and STA8610A models. These receivers are designed for automotive applications such as advanced driver assistance systems and autonomous driving, as well as industrial uses, including asset tracking, mobile robots and precision agriculture.
The Teseo VI+ variant can host enhanced positioning engines developed by third-party companies, providing real-time kinematics for centimeter position accuracy.
The LG680P is a multi-constellation, quad-band GNSS module designed for high-precision positioning and to enhance signal quality and precision through concurrent reception of L1, L2 and L5 frequency bands. It supports Galileo E6, QZSS L6 and BDS B2b signals for precise point positioning, ensuring horizontal accuracy of up to 0.8 cm + 1 ppm without requiring local or broadband connectivity.
To ensure signal integrity in environments with electromagnetic interference, the module features professional-grade anti-jamming technology, including built-in NIC algorithms that suppress narrow-band interference. It supports external active antennas for enhanced signal reception and positioning accuracy. It is ideal for applications such as autonomous lawnmowers, delivery robots, surveying equipment and precision agriculture. Quectel complements it with two external GNSS antennas: the YEGR001W8AH geodetic antenna and the YEGD006U1A compact patch antenna.
The New Ellipse firmware upgrade for the Ellipse product line allows the system to now be used as an attitude and heading reference system or inertial navigation system. It is designed to enhance navigation, attitude and heave performance for stable and accurate positioning, even in challenging conditions.
It introduces advanced GNSS-denied capabilities, featuring newly integrated flags that trigger when GNSS jamming or spoofing threats are detected. This allows users to reject or re-enable external sensors — such as GNSS — without resetting the filter. The user-friendly interface allows for fast and flexible configuration using simple command lines, enabling users to tailor the Ellipse to their specific needs and applications.
Localization Solution Operates in GNSS-denied environments
Photo: OxTS
WayFinder is a localization solution designed for GNSS-denied environments. It integrates a GNSS/INS system, onboard processor, lidar scanner and two cameras, enabling precise navigation in areas with limited satellite coverage. The system features Lidar Boost, a software technology that enhances GNSS/INS performance by processing lidar data to compensate for missing or inaccurate GNSS updates in real time. This ensures high-accuracy localization and seamless transitions between GNSS-supported and GNSS-denied environments.
WayFinder enables precise navigation for autonomous vehicles in ports, mining and indoor automotive testing without fixed infrastructure. It also provides reliable positioning for surveyors in areas with limited GNSS coverage.
Virtual Surveyor Version 10 introduces Basic Topographic Design tools, allowing users to document terrain changes such as graded roads, water ponds and building surfaces. The software now features four subscription plans — Valley, Ridge, Mountain and Peak.
Ridge plan: Focuses on surveying a single moment in time using one drone data set.
Mountain plan: Adds Timelines to compare surveys across different times, visualizing changes through Time Steps.
Peak plan: Includes advanced Topographic Design tools for planning future structures by creating new Time Steps. These tools allow users to design features such as roads or ponds directly on UAV-derived models, with automated alignment and volume calculations for cut-and-fill operations.
Version 10 introduces drawing guides, available in the Ridge plan and above, enabling precise drawing of points at specific intervals or angles. Walk Mode, included in all plans, allows users to explore 3D terrain at ground level for better visualization. Timelines, featured in the Mountain and Peak plans, facilitate the comparison of multiple surveys conducted at different times and the integration of future designs. These improvements seek to streamline processes for engineering surveyors, supporting applications in construction, mining and water management.
The Jupiter Laser RTK integrates GNSS, auto-IMU, laser and dual camera systems into a single unit. It incorporates a precise green laser that remains visible even in bright daylight. This feature allows for precise measurements of points in hard-to-reach, signal-blocked or potentially hazardous locations. It also features a night vision camera, allowing users to see feature points even in low-light conditions. The RTK system’s laser range is up to 50 m, making it suitable for challenging surveying environments. It incorporates visual technology to offer surveyors an immersive experience during surveying and stakeout operations, improving working efficiency and productivity.
Version 2.1.0 of AgEagle Aerial Systems’ eBee VISION application software introduces circular and grid mapping features, allowing users to generate 2D or 3D maps using external post-processing software for more comprehensive geospatial data.
The eBee VISION 2.1.0 can continue missions in GNSS-denied environments and allows manual deactivation of GNSS to prevent jamming or spoofing. It implements the STANAG 4609 standard, the official format for motion imagery exchange within the NATO nations. This involves embedding UAV position and camera information into the videos recorded by the UAV and those broadcasted by the Ground Control Station. Its inclusion in the system seeks to enhance interoperability with third-party applications, which is key for military-grade UAVs.
It offers enhanced control over the Silent Tactical Landing feature. Users can now manually adjust the landing position on the map, with the system providing range estimates to inform operators of the UAV’s reach. This functionality offers greater flexibility in mission planning and execution, particularly in tactical scenarios requiring precise landing control. The system is ideal for defense, public safety and utilities applications.
‘Drone-in-a-Box’ Solution Designed for vehicle-mounted deployments
Photo: DJI
The DJI Dock 3 “drone-in-a-box” solution is designed for vehicle-mounted deployments and 24/7 remote operations in various environments. This system is compatible with the Matrice 4D and Matrice 4TD UAVs, which feature advanced cameras and IP-rated protection for challenging conditions. The UAVs are ideal for public safety, emergency response and infrastructure inspection.
This system supports flexible deployment options, including vehicle-mounted setups optimized for emergency operations and long-distance inspections. It enables horizontal calibration and cloud-based dock location adjustments. Two docks can be mounted on a single vehicle to facilitate dual-UAV rotations for enhanced efficiency. In fixed deployments, the D-RTK 3 Relay Fixed Deployment Version can be added to improve video transmission and satellite connectivity.
The Matrice 4D and 4TD UAVs have a wide-angle camera, medium tele camera, tele camera and laser range finder. The Matrice 4D features an advanced camera suite designed for high-precision mapping. The Matrice 4TD includes an infrared thermal camera for public safety and emergency response applications. The system includes a Flight Termination System to support regulatory compliance in strictly controlled airspace. This system can manually or automatically stop drone operations if necessary.
Casia G Release 4.0 is a software update that enables nighttime detection of aircraft, allowing 24/7 beyond visual line of sight (BVLOS) UAS operations. The update supports BVLOS flights up to 400 ft at night without requiring hardware modifications, offering detection of both cooperative and non-cooperative aircraft. The system detects aircraft at distances of up to 16.7 km with 360° coverage, ensuring safe nighttime operations. When multiple units are used, triangulation technology provides accurate range, altitude and satellite data for intruding aircraft. The update leverages existing hardware to detect navigation and anti-collision lights at night.
The MAS10 is a 77 GHz FMCW marine radar system designed to enhance navigation safety in congested environments under all weather conditions. The ultra-high-definition W-band radar provides centimeter-level resolution, enabling vessels to detect and identify small hazards in heavily trafficked waterways.
Unlike optical and infrared sensors, W-band radar technology penetrates fog, heavy rain and snow, ensuring reliable detection. It operates effectively in low-visibility scenarios, including complete darkness, intense sunlight and shadowed areas where cameras and lidar may struggle.
The Eagle Series line of spatial 3D scanners feature lidar and imaging sensors and are designed for various applications, including reverse engineering, digital twinning, asset management, extended reality, precision mapping and 3D printing.
The series offers scanning capabilities with a range of up to 140 m and precision within 2 cm at 10 m. The lightweight scanner is designed for portability, with a built-in battery providing up to one hour of continuous use.
The scanners are available in Standard and Max versions. The Max model features four 48 MP cameras, enhancing scanning efficiency and producing vivid 8 K panoramic photos. With a point cloud frequency of 200,000 points per second, the Eagle Series is designed for applications requiring highly detailed spatial data.
Upgraded Mapping Package With Google Maps downloads
Photo: Golden Software
Golden Software has upgraded its Surfer mapping and 3D visualization software. Users can now directly download georeferenced aerial and satellite imagery from Google Maps into projects. The latest version also improves 3D visualization tools, focusing on faster and more intuitive creation of visual models. Users can now colorize 3D drill hole intervals based on text keywords, making it easier to interpret subsurface data. Additionally, contour slices can now be added to the 3D view, offering a clearer representation of data layers.
Golden Software has released a beta version (30.0.135) that introduces multiple light sources for improved 3D viewing and customizable legends for better map presentation. These updates are designed to streamline workflows for professionals in industries such as environmental consulting, resource exploration and geospatial analysis, simplifying the creation of professional-grade maps and models efficiently.
SBG Systems has released Qinertia 4.2, an updated version of its post-processing software for GNSS and inertial navigation system (INS) data. This release introduces several new features and improvements aimed at refining processing accuracy and usability, according to SBG Systems.
One of the notable additions is the beta version of Precise Point Positioning Fixed Ambiguity, which allows centimeter-level accuracy processing without the need for a base station. The update also includes a new RTS smoothing option, known as the Trajectory Smoother, which enhances INS processing by removing artifacts while maintaining precision. Another feature is the standalone Lever Arm Estimation Tool, now available as a separate application with a simplified interface. The Advanced Virtual Base Station Network Creation has been enhanced with improved base station quality indicators to increase reliability.
Other updates in Qinertia 4.2 include compatibility with the New Ellipse series and support for Teledyne Intrepid INS. The software now offers faster processing speeds, enhanced geodesy functionalities such as base station velocity analysis, and updated tools for assessing processing quality through new status plots. It also supports the latest firmware versions of Ekinox, Apogee, Navsight and Quanta systems.
These updates aim to improve workflow efficiency and data quality for professionals working with GNSS and INS systems.
SBG Systems has unveiled its MEMS-based North-seeking inertial measurement unit (IMU) that operates independently of GNSS. According to the company, this launch lays the foundation for future products, such as attitude and heading reference systems (AHRS) and inertial navigation systems (INS), broadening the scope of MEMS-based navigation solutions.
The MEMS-based IMU can achieve a heading accuracy greater than 1° secant latitude without GNSS assistance. When integrated with GNSS and SBG Systems’ navigation algorithms, it can achieve INS heading accuracy greater than 0.01°.
The device features a true MEMS-based design with no moving parts, eliminating the need for carouseling mechanisms. This ensures enhanced durability and reliability across a wide range of operating environments.
Key features of this IMU include its compact size, low weight and minimal power consumption. Measuring 52 x 52 x 36 mm and weighing less than 150 g, it consumes only 2 watts of power. Designed for high-volume production, the device is well-suited for widespread adoption across industries. Additionally, its robust design offers long-term reliability in demanding conditions, and its ITAR-free status allows unrestricted global deployment.
SBG Systems has also developed new algorithms to enhance gyrocompass and INS alignment performance. These include a pure north-finding algorithm capable of rapid initialization in both static and dynamic conditions within one minute, as well as an advanced GNSS/INS fusion algorithm that delivers exceptional single-antenna heading accuracy even in low-dynamic environments.
It can be used for applications such as marine operations, autonomous systems and georeferencing. The IMU is particularly suited for subsea applications including remotely operated vehicles and autonomous underwater vehicles, as well as geospatial and marine surveying tasks requiring precise single-antenna heading accuracy.
The first off-the-shelf solutions are expected to be available by early 2026.
Read a roundup of recent products in the GNSS and inertial positioning industry from the March 2025 issue of GPS World magazine.
Surveying and Mapping
Photo: Eos Positioning Systems
New Eco-Friendly Carrying Case For Eos Positioning Systems’ receivers
The Skadi Gold, Skadi 300 and Skadi 200 GNSS receivers will now be shipped in a field-rugged carrying case made entirely from recycled materials. The case is designed to meet the demands of professionals who utilize GNSS technology in challenging environments. Its construction incorporates durable, eco-friendly materials that can withstand various field conditions, from remote wilderness areas to urban construction sites.
A key feature is its composition of 100% post-consumer recycled resin, which significantly reduces waste and promotes environmental sustainability, according to the company. It is specifically engineered to be shock-resistant and weatherproof.The case is provided as a standard inclusion with every purchase of the Skadi Gold, Skadi 300 or Skadi 200 GNSS receivers at no additional cost.
Multibeam Sonar Designed for bathymetric surveying
The Gemini 1200id is built on the same robust platform as the Gemini 720is multibeam sonar. The device features a 120° horizontal field of view, operating at both 720 kHz and 1,200 kHz acoustic frequencies.
The Gemini 1200id incorporates advanced noise reduction technology to significantly improve the attenuation of waterborne electrical noise to enhance imaging performance. An integrated speed-of-sound sensor ensures high positional accuracy of displayed targets, while CHIRP processing technology enhances target separation over extended ranges.
Compatibility with Tritech’s Genesis software package allows users to control multiple Tritech products from a single interface to streamline operations. The company has also made software development kits available for Windows and Linux operating systems to integrate into various platforms. The sonar’s design includes a custom-developed analog front-end solution with fully differential receiver channels, making it ideal for longer-range applications.
HiPer XRa is a GNSS receiver for surveying, mapping and construction applications. It can benefit a wide variety of users, including construction professionals, surveyors, geographic information systems (GIS) professionals, archeologists, engineering firms and more. The HiPer XR supports GPS, GLONASS, Galileo, BeiDou, IRNSS, QZSS and SBAS.
The new receiver has advanced Topcon Integrated Leveling Technology (TILT) compensation, featuring a calibration-free and magnetic interference-immune integrated IMU that provides up to 60° of tilt for precision measurements in challenging positions. It has signal integrity protection, anti-jamming and anti-spoofing capabilities. Through the myTopcon NOW! website, users can access online training materials, firmware updates and additional software resources.
Airborne Lidar System Ideal for coastline and river surveying
CoastalMapper is an airborne bathymetric lidar system for coastline and river surveying. The CoastalMapper can survey coastlines and rivers 250% faster than previous sensor models, according to Leica Geosystems.
It is suitable for various mapping applications, from assessing infrastructure resilience to monitoring river floods and conducting environmental investigations.
It features a high-performance bathymetric lidar module, a Leica TerrainMapper-3 topographic lidar and an imaging sensor, integrated into a compact and lightweight sensor head. This allows the CoastalMapper to capture up to 1 million bathymetric data points and 2 million topographic data points per second while providing high-resolution imagery with a 5-cm ground sampling distance at typical flying heights.
It integrates with Leica Geosystems’ airborne mapping workflows and offers cluster processing capabilities, allowing users to analyze large datasets and reduce the time from data collection to final deliverables. These outputs can include classified point clouds, digital terrain and surface models, and various imaging products.
Surveying Kit Streamlines base station and checkpoint setup
WingtraGROUND, a comprehensive survey kit, streamlines base station and checkpoint setup for on-site post-processing kinematic surveys with the WingtraONE Gen II, a vertical takeoff and landing UAV. The kit combines receivers, checkpoints and tools into a single, portable workflow.
The system integrates hardware components with a Wingtra tablet interface, which can help surveyors confirm correct receiver placement and avoid common errors associated with improper base station setup and inaccurate coordinates.
Wingtra receivers, equipped with Emlid Reach RS3 technology, provide accuracy within 2 cm, meeting high standards for aerial data validation. These receivers can also function independently for terrestrial surveys in real-time kinematic mode, including point collection and stakeout for various applications.
Galileo HAS-Enabled Receiver Offers positioning capabilities with 20 cm accuracy
The Geode GNS3H supports Galileo High Accuracy Service (HAS). It offers positioning capabilities with 20 cm accuracy worldwide without requiring additional infrastructure or subscriptions.
It is built to withstand tough conditions, making it ideal for demanding fieldwork. The device offers various accessories, including the Geode Grip, which combines the Geode with a data collection device of choice into a single handheld solution. A backpack strap kit and survey pole are also available to enhance mobility and flexibility in the field. The GNS3H can be used for surveying, agriculture, construction, forestry, mining and archaeology.
Expanded Mapping Portfolio 3D mapping technologies and more
Topcon Positioning Systems has become an authorized distributor of Pix4D’s photogrammetry software portfolio.
The partnership aims to enhance reality capture solutions across various industries, including surveying, mapping, utilities infrastructure, public safety, forensics, and architecture, engineering and construction.
The agreement streamlines the procurement process for end users by allowing them to access Pix4D’s advanced photogrammetry software solutions through Topcon’s global distribution network.
The GNSS real-time kinematic (RTK) 5 Click — a compact add-on board for high-precision positioning and navigation demands — features the UM980, an all-constellation multifrequency RTK positioning module from Unicore, with the advanced NebulasIV SoC for enhanced performance.
It supports Swift Navigation’s Skylark precise positioning service, multiple GNSS constellations and RTK positioning for centimeter-level accuracy. The board also features JamShield technology for robust performance in challenging environments, USB connectivity for easy configuration and visual status indicators for module status and GNSS signal reception.
It can be used for a variety of applications, including surveying and mapping, precision agriculture, UAVs, autonomous robots and autonomous driving.
Multi-Band GNSS Antenna Can operate in urban environments
Levity Series’ AHP24510 (L1/L2/L-Band) and AHP54510 (L1/L5/L-Band) directional patch antennas are designed to receive signals from GPS, Galileo, GLONASS and BeiDou satellite constellations.
These antennas offer faster and more accurate signal acquisition and lock, specifically in urban environments. The L-Band capability allows compatibility with high-precision GNSS correction services. The multi-band antennas offer integral redundancy to minimize satellite security blind spots and reduce energy consumption due to faster acquisition, requiring less system uptime to save power.
The Levity Series active antennas feature a 45 mm x 45 mm x 10 mm wide-band, dual-stacked patch design with a dual-feed, low noise amplifier, providing 28 dB to 29 dB gain and filtering. They operate with a maximum antenna VSWR of 1-to-1 from 1,207 MHz to 1,603 MHz, and the passive antenna efficiency ranges from 39.93% to 68.51% in the L1 band. These antennas use right-hand circular polarization to mitigate multi-path interference.
The Levity Series includes other multi-band products for high-precision applications, such as the HP24510A and HP54510A stacked-patch passive components, and the TFM.120A surface-mount front-end module, which covers the full multi-band GNSS spectrum including L-band. These antennas are suitable for various applications, including wearables, transportation, robotics, precision agriculture and autonomous vehicles.
The M9PLUS-HCT-A-SMA is an active multi-frequency GNSS antenna designed for high-accuracy applications. It supports L1/L2/L5 GPS, Galileo, Beidou and GLONASS bands, as well as L-band correction services. The antenna utilizes Maxtena’s proprietary Helicore technology, which offers advanced pattern control, polarization purity and efficiency in a compact form factor.
It integrates a pre-filter specifically engineered to mitigate LTE interference. This is crucial for maintaining signal integrity in environments with dense mobile communication networks, where LTE signals can overlap with GNSS frequencies. The pre-filter can effectively block out-of-band LTE signals, reducing intermodulation risks and ensuring clear GNSS signal reception.
The M9PLUS-HCT-A-SMA is built with rugged, IP67 automotive-grade components and includes an integrated SMA connector. It also features an O-ring for enhanced environmental sealing. Weighing only 24 grams, the antenna is ground plane-independent, making it versatile for various installations. It is particularly well-suited for GIS and RTK applications where high accuracy and reliability are crucial.
The MostaTech G321M is a three-axis fiber optic gyroscope (FOG) that offers high-precision navigation and orientation measurement capabilities. This advanced sensor features a data rate of 8 kHz.
Key features of the G321M include an input range of 400° per second, a bias RMS of 1° per hour and an angular random walk of 0.025 °/√h. Additionally, it has a power consumption of 2 W and an initialization time of 1 second. The G321M is designed with a compact form factor, making it suitable for various applications where size and weight are critical factors.
It is ideal for UAVs, robotics, borehole surveys, image stabilization, gimbal stabilization and underwater vehicles.
High-Precision Lidar Designed for precision applications
The TV1 Lite and the TV1 UAV systems are designed for various precision applications, such as mapping and data collection.
The TV1 Lite features TrueNav technology, a Hesai 32-channel laser scanner and a FLIR 5MP global shutter camera with a 90° field of view. It also includes one year of TV1 Lite Annual Processing with support and maintenance.
TV1 offers customization options, allowing users to choose from 26 MP, 45 MP or 61 MP cameras and various Trajectory Correction Service options.
Flight Control System With autopilot functionality
The Prism Supervisor software combines UAV autopilot flight control systems with AI-based observations processed in real time, aiming to enhance UAV operations.
The system provides a programming framework and software development kit for users to create custom mission scenarios. During flight, Prism Supervisor can adapt its autopilot functionality in real time, generating mission segments and flight plans as needed.
The software features a user-friendly graphic interface for mission planning, real-time visualization and execution. It supports Windows, Linux, macOS, iOS and Android.
Remote ID Receiver Enhances airspace awareness and UAV safety
RIDER is designed to enhance situational awareness by providing real-time detection of UAV activity in sensitive areas. It also seeks to provide a clear visibility of surrounding UAV operations to help avoid potential collisions and ensure safer flight experiences.
The device features a built-in industrial chip SIM that provides global coverage through LTE-M and NB-IoT, ensuring connectivity in various environments.
It operates effectively within a temperature range of -20 °C to +60 °C and is rated IP54 for dust and water resistance. The device complies with ASTM F3411-22A and ASD-STAN EN 4709-002 standards, making it suitable for regulatory environments.
The RIDER can detect signals from up to 5 km with its default antennas and up to 10 km when using an optional high-performance antenna. It is equipped with an internal cellular and Bluetooth antenna, along with an integrated GNSS antenna that provides precise positioning and timestamping capabilities. It supports multiple GNSS frequencies and utilizes Bluetooth and Wi-Fi technologies for Remote ID communications.
Streamlined BVLOS Operations For a variety of applications
The Sentaero 6 UAV is designed for advanced over-the-horizon operations beyond visual line of sight (OTH-BVLOS). It features built-in AI and machine learning capabilities for real-time data processing. The system can be used for surveying, mapping, inspection, asset monitoring and more.
Engineered to streamline operations, the Sentaero 6 offers more accurate and up-to-date intelligence on assets. Its onboard computer can processes data mid-flight.
Future developments will include swarm operations, enabling one human to control multiple UAVs simultaneously; fully remote operations and higher safety standards, such as a parachute for urban missions, according to Censys Technologies.
SBG Systems has significantly updated its Ellipse series sensors, incorporating the latest World Magnetic Model (WMM) to enhance accuracy and reliability in navigation applications. This upgrade is available for all Ellipse sensors, including first-generation models.
Designed for unmanned systems such as UAVs, UGVs and marine platforms, the Ellipse series comprises compact, high-precision inertial sensors. These devices feature built-in three-axis magnetometers that measure Earth’s magnetic field, crucial for accurate heading and positioning data.
Updated every five years, the WMM is a globally recognized mathematical representation of Earth’s magnetic field. The latest version, released in December 2024, ensures precise heading and positioning corrections to account for ongoing geomagnetic changes.
NDAA-Compliant UAV Now integrated with ArcGIS Flight
Esri now supports the Astro Max UAV in its ArcGIS Flight application. The Astro Max is the first Blue UAS-cleared and NDAA-compliant UAV to integrate with Esri’s platform.
The Astro Max, developed by Esri partner Freefly Systems, adheres to the security and performance standards set by the National Defense Authorization Act and the Defense Innovation Unit’s Blue UAS initiative. This industrial UAV is designed to enhance the capabilities of government and enterprise users utilizing ArcGIS Flight.
Autonomous Swarm Control Controls various autonomous platforms
The Autonomous Multi-Domain Operations Resiliency Platform for Heterogeneous Unmanned Swarms (AMORPHOUS) software features a single-user interface to operate thousands of autonomous assets simultaneously. Designed with an open architecture, this software enables the U.S. and allied militaries to control a mix of uncrewed platforms, payloads and systems.
AMORPHOUS includes an intuitive and distributed command-and-control interface to give operators the flexibility to conduct a wider array of intricate military missions. This collaborative autonomy at scale will provide warfighters with a decisive overmatch capability.
L3Harris is developing prototypes using the AMORPHOUS architecture on contracts for the U.S. Army and the Defense Innovation Unit. AMORPHOUS has demonstrated flexibility and interoperability by controlling multiple, separate assets across multiple vehicle types operating in different domains during government-managed tests.
AMORPHOUS supports decentralized decision-making, which enables individual, uncrewed assets to perform tasks autonomously and make real-time tactical decisions inside the network.
Advanced Counter-UAV Radar Multi-console radar control and display system
Cambridge Pixel has developed a radar control and display system for Weibel Scientific’s XENTA surveillance radar, which is designed for modern air defense and counter-unmanned aerial systems (C-UAS) applications.
The XENTA radar includes 3D target tracking, continuous target illumination and synthetic receiver beamforming. It is available in two configurations: the XENTA-M for short-range air defense and the XENTA-C for C-UAS operations.
The system is designed to work seamlessly with third-party command-and-control systems, enhancing operational efficiency.
Cambridge Pixel’s library of radar processing software allows users to develop a tailored radar controller specific to the XENTA radar’s requirements. Enhancements were made to existing functionalities, such as improved MIL-STD-2525 overlay graphics and support for dual-redundant operator consoles.
The XENTA radar system can detect small UAVs at distances exceeding 7 km and classify them beyond 5 km. This capability makes it suitable for various applications, including airport security, border control, critical infrastructure protection and event security.
The Pelican 2 agricultural spray UAV has an expanded 300-liter payload capacity and can cover up to 5.3 ha/hr.
It incorporates several technological enhancements designed to meet the demands of agriculture applications. The aircraft features an upgraded four-motor electric propulsion system, a wider 18-m spray swath and advanced lidar and radar systems for fully autonomous day-and-night spraying. These improvements aim to increase efficiency and precision in aerial application while reducing operational costs for farmers.
The Pelican 2’s airframe and structural components are constructed from carbon fiber composites, corrosion-resistant metallic components and 3D-printed assemblies.
SBG Systems has upgraded its inertial navigation systems — Ekinox, Apogee and Navsight— with new GNSS receiver options designed to offer greater flexibility while maintaining high precision and reliability.
Previously, SBG Systems integrated a triple-band GNSS receiver with RTK and Fugro Marinestar capabilities into its navigation solutions. The latest update introduces three additional GNSS receiver variants, each tailored to specific regional and application needs. These include:
Marinestar: This variant supports Fugro Marinestar, delivering precise point positioning (PPP) with centimeter-level accuracy via L-band corrections without requiring a base station. It is optimized for marine applications such as hydrographic surveys and dredging.
HAS Ready / NavIC: Designed for future compatibility, this variant includes Galileo E6 support for the upcoming Galileo High Accuracy Service (HAS), offering free decimeter-level PPP corrections globally. Additionally, it supports the Indian NavIC system, making it suitable for applications in urban environments, aviation and operations in India.
Centimeter-Level Augmentation Service(CLAS): Tailored for users in Japan, this variant utilizes QZSS L6 signals to provide free PPP corrections without external services. It is ideal for land and marine navigation in Japan.
All GNSS variants integrate seamlessly with SBG Systems’ antenna portfolio and Qinertia post-processing software. Users select the appropriate GNSS variant at purchase to match their operational requirements. These enhancements aim to provide versatile solutions across diverse industries while ensuring reliable performance.
SBG Systems has released the New Ellipse, a firmware upgrade for the Ellipse product line. The system can now be used as an attitude and heading reference system or inertial navigation system.
Powered by the latest-generation sensor fusion algorithm, the New Ellipse is designed to enhance navigation, attitude, and heave performance for stable and accurate positioning even in high-dynamics environments and challenging conditions.
Additionally, it introduces advanced GNSS-denied capabilities, featuring newly integrated flags that trigger when GNSS jamming or spoofing threats are detected. This allows users to reject or re-enable external sensors — such as GNSS — without resetting the filter. It seeks to provide users with enhanced visibility and control over how the individual system responds to these events, allowing for more precise adjustments in challenging environments.
The New Ellipse offers several new features that simplify system integration. It now supports seamless configuration and interfacing via a robust RESTful API. The user-friendly interface allows for fast and flexible configuration using simple command lines, enabling users to tailor the Ellipse to their specific needs and applications. The firmware upgrade is now available at no additional cost to all users of compatible hardware (v3.x).
For centuries before sonar, lidar and unmanned surface vehicles (USVs), sailors would measure depths by throwing a line overboard with a lead weight at the end — called a leadline — and record its length to the seafloor. Mapping large areas of the seafloor, therefore, required thousands of these measurements.
However, even after extensive measurement efforts, the acquired data was often inaccurate or incomplete, which forced navigators and surveyors to estimate the seafloor’s bathymetry until remote sensing was introduced in the 1970s.
Since then, the growing need for increasingly accurate and rapidly available data has led to a worldwide effort to develop sensors and alternative techniques for measuring depths.
In the ongoing Florida Seafloor Mapping Initiative (FSMI), the Florida Department of Environmental Protection tasked Woolpert Geospatial Program with acquiring bathymetric survey data using lidar technologies to produce a comprehensive, publicly available, high-resolution seafloor surface model of Florida’s coastal waters by 2026.
Similar initiatives across the globe have kick-started innovations in underwater data collection and interpretation. In this feature, SBG Systems, CHC Navigation (CHCNAV) and Advanced Navigation describe how they used modern hydrographic surveying to aid defense departments, produce 3D topographic maps, and analyze the depth of The Great Blue Hole in Belize.
Exploring challenging waters
SBG Systems
Advancements in hydrographic surveys can lead to the exploration of depths previously unknown. The Great Blue Hole, located off the coast of Belize, is the largest marine sinkhole in the world, with a diameter of 300 m and a depth of 125 m. This major scuba hotspot is part of the Belize Barrier Reef Reserve System and a UNESCO World Heritage Site.
Aquatica Submarines conducted an expedition survey of the Blue Hole. For two weeks, a team of scientists, explorers, and filmmakers collected survey data and captured photos and videos of this geological wonder. It is the first time in history that an expedition of this scale was attempted at the Blue Hole.
The challenge: Finding submersibles to equip with sonar
The expedition team chose two submarines to carry out the survey: its Stingray 500 and the Roatan Institute of Deepsea Exploration’s IDABEL. Both vessels can carry up to three persons for a maximum of 12 hours.
Norwegian technology group Kongsberg’s dual-axis sonar technology was used to create a 3D representation of the sinkhole. The surface and submarine-mounted sonar equipment were also equipped with SBG Systems’ Ellipse miniature inertial navigation system (INS).
The Ellipse was used to mark the Blue Hole perimeter and scientists then processed the recorded data using MS1000 processing software.
Additional steps and results: Analyzing 3D sonar maps
A key outcome of the expedition is the creation of a complete 3D sonar map of the Blue Hole using point-cloud data collected by Kongsberg’s dual-axis sonar to create a 3D map of the site. The sonar was pole-mounted on the survey vessel with the GPS receiver and motion reference unit directly over the scanner’s head.
Sonar expert Mark Atherton from Kongsberg’s Canadian subsidiary, Kongsberg Mesotech, was a key member of the science-based sonar and data collection team. Atherton operated the sonars aboard the Research Vessel Brooks McCall, contributing to an invaluable high-resolution map of the entire sinkhole.
“By understanding the geological history and geometric structure at the Blue Hole, we can contribute new data to the global scientific community studying sinkholes and cenotes,” Atherton said.
The team was able to conduct more than 20 dives into the large sinkhole, taking videos and 3D images during each trip. They also completed a two-hour live broadcast featured on The Discovery Channel.
“What [the Great Blue Hole] tells us is that sea level rise is not [always] a gradual process,” said Erika Bergman, Aquatica’s chief pilot and oceanographer. “We carefully measured the terraces and layers built up in the hole and we can see that sea level rise can happen dramatically.”
Producing 3D hydrodynamic models
CHC Navigation
Flood control structures — such as dikes, dams, spurs, drainage channels, and floodways — are designed to protect coastal and riverine areas of cities and farms and, above all, the people who live there.
To prevent flooding in low-lying regions and support national ecological protection and development strategies in the Yellow River Basin in China, the Ministry of Water Resources launched the “Digital Twin Yellow River Construction Plan (2022-2025)” project. The Chinese Bureau of Hydrology and Water Resources was tasked with building a digital twin flood model based on part of the country’s Yellow River, targeting the 28-km section of the river basin.
The challenge: Building and designing a digital twin flood model
The first step was to acquire 3D data underwater, on land, and from the air. CHC Navigation (CHCNAV) provided its Apache 6 and Apache 4 USVs to collect underwater data using multi-beam and single-beam echo sounders. The AlphaUni lidar system mounted on the BB4 UAV was used to gather the land data. Finally, the team obtained aerial data using an oblique photographic system from CHCNAV mounted on a UAV.
As a result, researchers obtained large-scale remote sensing images, laser point clouds, terrain data, oblique photography, CAD drawings, and BIM models.
The simulation and analysis of the historical flood events on the third party software; based on the data collected by CHCNAV’s USV and UAV. (Image: CHCNAV)
CoPre software, a 3D laser scanning pre-processing software that can process captured raw data, including POS trajectories, lidar data, and RGB images, was used for the Tilt and DOM modeling.
CoProcess software, designed for reality capture post-processing tasks and DEM/DTM generation, generated high-precision DEM models, a 3D representation of a ground surface created from elevation data, with a point cloud density of more than 50 points/m2 for the areas above and below the water.
Additional steps
The remotely operated vehicles and generated models obtained site data such as climate records, flood maps, flow records, hydrologic summaries, groundwater level records, water quality, and resource data to use as the basis of the analysis.
The team also used historical flood information during the scoping phase to develop a conceptual model of the flood mechanisms. Based on the actual flood records, a third-party flood simulation platform was used to produce the entire flood process for the different years.
The real-time flood extrapolation was processed on the third-party software, which simulated steady and unsteady flow patterns using hydrodynamic modeling algorithms.
“Advancements in bathymetric surveying, incorporating cutting-edge technologies such as UAVs with lidar, USVs with echo sounders, and high-precision positioning systems, have transformed the creation of digital twin models for water bodies, particularly the Yellow River in China,” said Taxiya Wang, Business Development Manager of Marine Survey at CHC Navigation. “This bathymetric surveying effort has laid the foundation for hydraulic models, flood maps, and customized applications, emphasizing the importance of up-to-date, high-quality data in watershed engineering and construction projects.”
The result
Based on the developed digital flood model, the next step for the digital watershed twin project is to collaborate with technical staff, experts, and users to create customized applications for watershed engineering and construction. The project is ongoing and will end in 2025.
Surveying wet gaps
Advanced Navigation
Defense departments are continuously looking to improve the safety of military personnel and equipment in conflict regions. With this aim, the UK Defense Science and Technology Laboratory (DSTL) launched its “Map the Gap” competition. It invited engineering firms to design and build an unmanned surface vessel (USV) capable of quickly, reliably, and safely surveying wet gaps — including rivers, streams, canals, and waterways — without putting engineers and other personnel at risk. Commanders can then view the survey data to determine the safest crossing points for troops and equipment.
DSTL relied on Advanced Navigation’s Spatial FOG Dual fiber optic gyroscope to conduct the hydrographic surveying project.
The challenge: Building a USV to assist defense forces
Challenges in the project included measuring water depths and flow rates, crossing lengths, river-bed topography, and riverbank heights, as well as shape profiling and assessing ground load handling capabilities. The vehicles also had to be either remotely operated or fully autonomous and deliver the collected data in a way that could be easily interpreted for quick decision-making.
The survey required multiple sensor technologies for simultaneous above- and below-water 3D surveys. For above-water use, dual lidar sensors produce high-resolution point clouds of the surrounding environment. For below-water mapping, a sensor suite consisting of a multibeam sonar, an Acoustic Doppler Current Profiler/Doppler Velocity Log (ADCP/DVL), and a cone penetrometer were used to measure current and water flow as well as to test substrate density.
Ultrabeam Hydrographic won the DSTL competition. Its team integrated multiple sensors into a single housing and selected the four-wheeled Axolotl vehicle for the second phase of the project.
Additional steps
An example of the highly detailed single-3D survey output from the Axolotl, showing features both above and below the water. (Image: Advanced Navigation)
The team was in search of a GNSS/INS device capable of dead-reckoning and maintaining accurate heading for extended periods of time, which led them to Advanced Navigation’s Spatial FOG Dual GNSS/INS.
Ultrabeam Hydrographic had previously been using a MEMS-based solution that could maintain a suitably accurate heading without GNSS for up to approximately 60 seconds. However, tests with the Spatial FOG Dual showed that it could maintain an accurate heading for more than 15 minutes.
“The MEMS can hold onto heading for maybe 30 seconds to a minute, accurately. After that, it’s not reliable,” Gabriel Walton, Ultrabeam Hydrographic’s technical director said. “We have used the Spatial FOG Dual in certain circumstances where we went 10 to 15 minutes without GNSS. I do believe it will go on for longer.”
The team integrated the Advanced Navigation solution into their survey management and mission control software. This allowed the Spatial FOG Dual to be used for survey purposes and to provide motion data to the robot’s artificial intelligence (AI) for autonomous mission control and object detection and avoidance.
The result
“Map the Gap” Phase 2 demonstrated that the Axolotl’s mechanical design, sensor suite integration, extensive use of AI for autonomous mission control, decision-making and precise navigation can serve as a significant advancement for bathymetric surveying.
Since “Map the Gap,” Ultrabeam Hydrographic has deployed the Axolotl on commercial waterway survey missions, such as surveying bridge sites and attaining a clear understanding of riverbed and water conditions.
A roundup of recent products in the GNSS and inertial positioning industry from the December 2023 issue of GPS World magazine.
SURVEYING AND MAPPING
Survey Antenna Designed for high-accuracy positioning applications
HX-CSX600A boasts a pre-filtered low noise amplifier (LNA) offering out-of-band rejection, ensuring strong anti-interference performance even in challenging environments. It is designed for high-precision GNSS applications, including agricultural vehicles, small robots and surveying. The antenna offers reliable and consistent satellite signal tracking across a wide range of frequency bands, including GPS, GLONASS, Galileo, BeiDou, QZSS, IRNSS, SBAS, as well as L-band correction services. With advanced multipoint feeding technology, HX-CSX600A maintains a stable phase center variation. Built with an IP67-rated compact and ruggedized housing, this antenna is designed to withstand dust, rain, sunlight, shock and vibration. Its standard TNC-K connector and pole mount aim to simplify the integration process. Harxon, harxon.com
Image: SBG Systems
INS/GNSS Post-Processing Software Designed for surveying applications
The Qinertia 4 introduces several features that provide users with a complete solution for precise trajectory and motion analysis. Qinertia is a post-processing software delivering better precision and reliability compared to real-time kinematic systems. It has an enhanced geodesy engine that boasts an extensive selection of preconfigured coordinate reference systems (CRS) and transformations, making it a versatile solution in applications that use diverse geodetic data, including land surveying, hydrography, airborne surveys, construction and more. To tackle the challenges of variable ionospheric activity, the technology uses Ionoshield PPK mode. This feature compensates for ionospheric conditions and baseline distances, allowing users to perform post-processing kinematics (PPK) even for long baselines or harsh ionospheric conditions. Another addition to Qinertia 4 is extended continuously operating reference stations (CORS) network support. This feature offers users a vast network of 5,000 SmartNet stations for reliable GNSS data processing.
Qinertia has more than 10,000 bases in 164 countries. This global coverage ensures Qinertia remains a reliable and efficient solution, regardless of geographic location. In addition, users can import their own base station data and verify its position integrity with precise point positioning (PPP). For data that cannot be processed using PPK, Qinertia 4 offers an alternative solution with its new tightly-coupled PPP algorithm. This new processing mode, available for all users with active Qinertia maintenance, provides post-processing anywhere in the world without a base station, with a horizontal accuracy of 4cm and a vertical accuracy of 8cm. SBG Systems, sbg-systems.com
IMU-RTK GNSS Receiver A compact, high-performance receiver with high-end dual camera technology
The i89 visual inertial measurement unit (IMU) GNSS receiver is a surveying device equipped with a 1,408-channel GNSS module that enhances real-time kinematic (RTK) availability, even in challenging environments. Its iStar 2.0 software incorporates advanced ionospheric modeling algorithms, achieving a high integrity RTK fix rate, particularly critical in regions of intense solar activity. The implementation of AUTO-IMU technology eliminates the need for manual initialization, streamlining field operations for increased efficiency. The i89 offers 16.5 hours of battery life and a lightweight 750 g design. The combination of panoramic capture mode and integrated IMU significantly improves the accuracy and efficiency of photogrammetric surveys. CHC Navigation, chcnav.com
GNSS System Features visual positioning capabilities
The Trion V10i GNSS System integrates two cameras for vision-guided surveying operations, an inertial measurement unit (IMU) for tilt surveys and an OLED screen for easy status checks. This device is designed to enhance productivity in the field, even in hard-to-access locations. It features IMU-based tilt compensation for precise measurements of up to 60° with no calibration needed. It also comes with a built-in 4G LTE and UHF and supports NFC, Wi-Fi and Bluetooth. It also offers users seamless connectivity through Trion Survey Cloud for real-time data sharing between field and office teams. FJDynamics, fjdynamics.com
INS For mobile mapping applications
The Atlans 3 is an inertial navigation system (INS) designed for land and air mobile mapping applications. The device is an all-in-one positioning and orientation system integrating unique micro-electro-mechanical systems. MEMS-FOG hybrid technology and a dual-antenna real-time kinematic GNSS receiver are housed within one compact device. The Atlans 3 offers north-keeping capability at FOG-level performance across a variety of land and air mobile mapping applications. It delivers real-time heading, even in GNSS-challenging environments such as urban canyons, mountainous terrain, or forested areas. The lightweight INS is designed to meet the requirements of high-performance lidars mounted on vehicles where space and weight constraints are critical. The Atlans 3 is designed to be quick and simple to install on all platforms. It offers efficient “set-and-forget” operations for a wide range of land and air applications including road and rail asset inventory, pavement condition survey, vehicle automation, HD mapping, ground-truth, airborne surveys and precision pointing. Exail, exail.com
L-Band GNSS Antennas Available in four models
The ARM972XF triple-band plus L-band GNSS antennas provide GPS/QZSS L1/L2/L5, GLONASS-G1/G2/G3, Galileo E1/E5a/E5b, and BeiDou B1/B2a/B2b + L-band coverage. The technology is designed for precision triple-frequency positioning where light weight and a low profile are required. The ARM972XF are small and lightweight housed triple-band precision mini ARINC GNSS antennas. They have an average phase center variation of less than 10 mm for all frequencies and overall azimuths and elevation angles. Additionally, both models are available with components qualified for low-Earth orbit (LEO). Housed in a weatherproof (IP67) enclosure, the ARM972XF is available in four versions. Model ARM972XF-1 (ARM972XF-1-S for LEO space-qualified components) has an integrated 100 mm ground plane, while model ARM972XF-2 (ARM972XF-2-S for LEO space-qualified components) is 83 mm in diameter. The antennas also include Tallysman’s eXtended filtering (XF) technology, designed to mitigate GNSS interference. Tallysman Wireless, tallysman.com
UAV
Helix Antenna Designed for UAVs
The HX-CUX615A has a low-profile design and simple integration process that makes it a suitable antenna for various UAV applications such as aerial photography, remote sensing, infrastructure inspection, traffic control and public security. Equipped with a pre-filtered LNA, HX-CUX615A offers out-of-band interference rejection to mitigate unwanted electromagnetic interference and provide reliable GNSS signals for seamless integration into positioning solutions. This lightweight antenna also adopts patented dual-quadrifilar helix antenna technology, ensuring stable wide-angle circular polarization performance. This results in low-elevation satellite tracking, while maintaining high gain and reliable signal tracking — even in challenging environments. Harxon, harxon.com
VToL UAV A fully autonomous fixed-wing VTOL UAV with multiple power configurations and a heavier payload
The E455 is a fixed wing, vertical takeoff and landing (VTOL) UAV. At 55lbs, the E455 offers a 2-hour flight endurance operating on battery power alone. It is designed to carry a variety of payloads, including mapping sensors, lidar and EO/IR surveillance sensors. Where allowed, the E455 can fly at gross weights up to 65 lbs, which offers users more versatility in payload selection. The E455 also features an open control payload bay, which allows for the seamless integration of custom payloads.
EVENT 38, event38.com
UAV Surveying Software With added UAV photogrammetry capabilities
The Terrain Creator app photogrammetrically processes UAV images to generate survey-grade terrains that then transfer into the traditional Virtual Surveyor workspace. Terrain Creator aims to simplify the aerial photogrammetry process by offering a visual and intuitive application to produce an orthomosaic and a digital surface model (DSM) from UAV photos, the company said. The software was originally developed to bridge the gap between UAV photogrammetric processing applications and engineering design packages. Prior to this new release, users had to rely on third-party software to generate elevation models and an orthomosaic on which they could work with the Virtual Surveyor toolset. Now, users can derive the 3D topographic information necessary for construction, surface mining and excavation projects in one package. Once the survey-grade terrains flow from the Terrain Creator into the Virtual Surveyor desktop app, users can access an interactive virtual environment and robust toolsets to generate CAD models, create cut-and-fill maps and calculations, or calculate volume reports. Users currently subscribed to Virtual Surveyor Ridge and Peak editions will see their software updated automatically with Terrain Creator. A flexible licensing setup will allow two users within a subscribing organization to use the Terrain Creator and Virtual Surveyor applications simultaneously from different computers. Virtual Surveyor, virtual-surveyor.com
MOBILE
Antenna Designed for high-precision and autonomous multi-frequency applications
The M10HCT-TNC GNSS L1/L2/L5 antenna is ground-plane independent and offers extremely low power consumption and minimal phase-center variation over azimuth crafted for GNSS high-precision applications. The antenna offers suitable axial ratio, ensuring multipath error is mitigated. Several filtering groups allow this antenna to have superb filtering capabilities and RF antijamming mitigation capabilities.
Maxtena, maxtena.com
GNSS Receiver Suitable for personnel positioning, IoT, railway patrols, vehicle tracking, and search and rescue missions
Equipped with the SinoGNSS K8 platform, the Z30 can track full constellations and multiple frequencies, providing centimeter-level accuracy. With 965 channels, it is capable of tracking more than 60 GPS, BeiDou, GLONASS, Galileo, QZSS, IRNSS and SBAS satellites. The Z30 features an integrated antenna for stable signal reception. The device is also equipped with two side buttons for power, one-click SOS alerts and three Indicator LEDs for power, satellite, and differential status checks. It supports NTRIP and TCP protocols, enabling various personnel positioning applications by uploading position data. The Z30 integrates with NaviCloud, offering functions such as real time location display, historical trajectory query, remote control, and electric fence. In addition, it can be customized to meet specific customer requirements. With indoor and outdoor positioning capabilities, the Z30 is a suitable solution for various fields. It supports outdoor real-time kinematic positioning with centimeter-level accuracy and indoor Bluetooth positioning with sub-meter-level accuracy. ComNav Technology, comnavtech.com
Antennas IoT multiband antennas designed for multiple mobile applications
The Pasternack IoT multiband combination antennas are designed for vehicles, fleets and pivotal base stations. The technology aims to revolutionize how industries perceive and use mobile connectivity. The antennas integrate 4G, 5G, Wi-Fi and GPS bands to offer emergency teams, on-the-move fleets and first responders an unwavering link, even in harsh environments. Facilitated with both FAKRA and SMA connectors and extended 17-foot cable leads, users can seamlessly integrate the technology. It also has an IP69K rating, certifying it for both indoor and outdoor deployments. MIMO capabilities improve data transmission speeds and reliability, ensuring consistent high-bandwidth connections. The antenna’s GPS/GNSS component, enhanced with LNA and amplified by a 26 dB gain, offers users improved navigation and tracking precision. Pasternack, pasternack.com
A roundup of recent products in the GNSS and inertial positioning industry from the November 2023 issue of GPS World magazine.
SURVEYING & MAPPING
MEMS IMU Suitable for rugged environments
The TAC-440 MEMS inertial measurement unit (IMU) is designed for demanding, mission-critical, rugged environments in a wide variety of defense, commercial, industrial, and marine applications. The TAC-440 features 1°/hr gyro bias and 1 mg accelerometer bias stability with 0.05°/√hr angle random walk over a wide temperature range. The solid-state quartz sensors and hermetically sealed IMU construction provide reliable MTBF and storage life, EMCORE stated. The TAC-440 supports four data message synchronization methods with either input synchronization pulse capability or an output time of validity capability. The user can choose whether the synchronization pulse is internally generated and output as a time of validity of the output data or whether the TAC-440 software will identify the synchronization pulse input and synchronize the output data to the input pulse. EMCORE Corporation, emcore.com
RTK GNSS Tablet A rugged device designed for geospatial and mapping operations in the field
The LT800H offers users robust outdoor performance, data security and centimeter-level accuracy for a variety of applications, including construction, environmental surveying and any industry in which Android tablets are used. Featuring a high-performance 1,408-channel GPS, GLONASS, Galileo and BeiDou module and a tracking GNSS helix antenna, the LT800H RTK Android tablet offers centimeter-to-decimeter positioning accuracy in challenging environments. It also comes equipped with a 4G modem to simplify connectivity to GNSS RTK network corrections. The technology also offers an eight-hour battery life, allowing users to collect data in the field uninterrupted. CHC Navigation, chcnav.com
PPK Software For land surveying, hydrography, airborne surveys, construction, and applications that require precise positioning
The Qinertia 4 contains an enhanced geodesy engine that has an extensive selection of preconfigured coordinate reference systems (CRS) and transformations, making it a suitable solution for applications that use diverse geodetic data. To tackle the challenges of variable ionospheric activity, Qinertia 4 features an Ionoshield post-processed kinematic (PPK) mode. This feature compensates for ionospheric conditions and baseline distances, enabling users to perform PPK even for long baselines and/or harsh ionospheric conditions. This ensures surveyors can achieve centimeter accuracy even in regions with unpredictable ionospheric disturbances. Another addition to the Qinertia 4 is an extended network support for continuously operating reference stations (CORS). This feature gives users access to a network of 5,000 SmartNet CORS for reliable GNSS data processing. These base stations add to the network of base stations directly available in Qinertia, bringing the total to more than 10,000 bases in 164 countries.
For data that cannot be processed using PPK, Qinertia 4 offers an alternative solution with its tightly coupled precise point positioning algorithm. This new processing mode, available for all users with active Qinertia maintenance, provides post-processing anywhere in the world without a base station, with a horizontal accuracy of 4 cm and a vertical accuracy of 8 cm. SBG Systems, sbg-systems.com
Airborne Lidar + RGB System Designed to enhance the details of aerial mapping operations
The AlphaAir 10 (AA10) features a high-precision navigation algorithm that provides 5 mm repeated range accuracy and achieves absolute precision in the 2 cm to 5 cm range, even in complex environments. The AA10 is capable of long-range measurements of up to 800 m, rapid scanning at 500,000 points per second, and features a continuously rotating mirror that enables scanning speeds of 250 scans per second. The AA10 enables the creation of mesh models by generating high-quality point clouds. It is powered by a 45 MP orthographic internal camera that provides high-resolution image mapping textures for 3D model reconstruction with realistic point cloud colorization. The AA10 also supports automated reality capture and real-time data visualization accessible directly from the UAV controller. The AA10 lidar system is lightweight and compact, weighing 1.55 kg, and provides a 30 min operating time when integrated with UAVs such as the DJI M350. The system is also IP64-rated. CHC Navigation, chcnav.com
GNSS Receiver Designed for survey projects
The Reach RS3 is a GNSS receiver that features inertial measurement unit (IMU) tilt compensation and a dual-band radio for enhanced compatibility with third-party receivers. The Reach RS3 enables users to survey at large tilt angles while maintaining survey-grade accuracy. The multi-band receiver works both as a base and a rover and comes factory calibrated. The receiver offers versatile options to get corrections from continuously operating reference stations (CORS), another Reach device, or a third-party base, so users can mix and match real-time-kinematic (RTK) receivers in a fleet. Its NTRIP connectivity enables corrections from CORS, NTRIP service, or a GNSS receiver using Emlid NTRIP Caster. When connected over NTRIP, Reach works on a baseline of more than 60 km in RTK and 100 km in post-processed kinematic. Emlid, emlid.com
GNSS Receiver Includes Trimble ProPoint and delivers survey precision and productivity in the field
The R580 GNSS receiver enables professionals in surveying, mapping and GIS, civil construction, and utilities to capture centimeter-level positioning. With the Trimble ProPoint GNSS engine embedded, users can measure points in challenging environments, such as under tree canopy or near buildings, while EVEREST Plus technology can identify and remove unwanted multipath signals for improved accuracy and data confidence. Using the Maxwell 7 chipset technology, the receiver provides fast processing, anti-spoofing capability and the ability to track all available GNSS constellations. The R580 supports Trimble RTX correction services for RTK-level precision without the use of a local base station or VRS network wherever correction sources are available. The receiver can be paired with all current mobile devices on a variety of operating systems and platforms —from a Trimble handheld or controller to a modern smartphone or tablet. It can also be mounted on a pole, vehicle or backpack. Trimble, trimble.com
OEM
GNSS Module Supports L1/L5 GNSS bands from multiple constellations, including NavIC
The NEO-F10N positioning module is based on the u-blox NEO form factor and is equipped with u-blox F10 dual-band GNSS technology. The NEO-F10N supports L1/L5 GNSS bands from multiple constellations — including NavIC — to provide meter-level position accuracy in urban areas. Its firmware is upgradeable and configurable to support several applications such as the vehicle telematics and micromobility markets or industrial applications requiring meter-level position accuracy. The NEO-F10N improves position accuracy in urban environments with its enhanced resilience against multipath interference. By leveraging signals from both the L1 and L5 bands, this module achieves better accuracy than using the L1 band alone. Users currently employing receivers based on modules such as the u-blox NEO-M8 and NEO-M9, can migrate to the new NEO-F10N generation. The module enhances accuracy, reduces power consumption, and offers an alternative solution to users who do not want to deploy dead reckoning set-ups. u-blox,u-blox.com
Multi-Band GNSS Antenna Designed to enhance meter-level positioning solutions
The ANN-MB5 is a multi-band (L1/L5/E5a/B2a) GNSS antenna that is optimized for the u-blox F10 platform and enables precise, reliable, and robust positioning, even in challenging environments. The antenna features concurrent reception of multiple navigation systems, including NavIC. The ANN-MB5 has a compact design with a magnetic base. u-blox, u-blox.com
INS A product for mobile mapping, autonomy, and more
The xRED3000 inertial navigation system (INS) offers quad-constellation GNSS support for multiple applications. The INS weighs 20 g, making it suitable for aerial payloads. At 53.6 mm x 50.6 mm x 9.5 mm in size, it can be incorporated without drastically changing a user’s design. When in a GNSS-denied area, the xRED3000 provides a position accuracy of 0.5 m even after 60 seconds. It features gx/ix tight-coupling algorithms, which improve accuracy in urban canyons and speed up real-time kinematic reacquisition after temporary GNSS outages. The xRED3000 features lidar inertial odometry, which takes data from lidar in post-processing to reduce inertial measurement unit drift and improve accuracy in areas with poor or no GNSS signal. Additionally, embedded NTRIP makes it easier to get GNSS corrections. OxTS, oxts.com
Triple Frequency GNSS Receiver Complete with a compact design for mobile applications
The BD990 supports triple frequency for the GPS, GLONASS, BeiDou and Galileo constellations. The receiver offers quick and reliable real-time kinematic (RTK) initializations for centimeter positioning. It features Trimble Maxwell 7 technology, which provides 336 tracking channels, Trimble Everest Plus multipath mitigation, and advanced RF spectrum monitoring and analysis. With the option of utilizing OmniSTAR or RTX services, the BD990 delivers varying levels of performance down to centimeter-level without the use of a base station. The BD992 also supports dual antenna GNSS heading while the BD992-INS supports position and orientation at high update rates. Trimble, oemgnss.trimble.com
MACHINE CONTROL
Automated Steering System Designed for precision agriculture applications
The SAgro150 automated steering system aims to provide farmers with an easy way to get started with auto-steering. With full-constellation tracking capability, the SAgro150 realizes ±2.5 cm auto-steering accuracy to maximize land use and yield while saving resources such as water and fertilizer. When compared to the first-generation SAgro100 system, the SAgro150 auto-steering system uses a single-antenna solution instead of a dual-antenna solution. It also features simpler integration options, only requiring a strong magnetic chuck to securely attach the antenna to the top of the tractor for satellite signal tracking. The new system also adopts dual gyroscope mode, enhancing the heading data reliability and compatibility with different tractors. The new system aids in applications such as rotary tillage, ridging, sowing and harvesting in straight line, curve, U-turn and more. SingularXYZ, singularxyz.com
Positioning and Heading Receiver Designed for multiple applications
AsteRx SB3 Pro+ is a housed multi-frequency GNSS receiver that uses triple-band GNSS technology for reliable centimeter-level real-time kinematic (RTK) positioning and sub-degree heading. With flexibility to be used as a rover or a base station, AsteRx SB3 Pro+ also has an ultra-high update rate and logging functionality. Enclosed in a ruggedized IP68 housing, the device is suitable for harsh environments. The AsteRx SB3 Pro+ has a high update rate and low latency for fast moving vehicles or machine parts. Septentrio, septentrio.com
GPS Antennas Offers enhanced navigation and tracking for automotive applications
The KP Performance vehicle GPS antennas come equipped with a gain of 28 dB to capture weak signals, even in the most challenging environments. The antennas also feature high out-of-band rejection. By minimizing signal interference and multipath effects, the antennas provide good signal quality and stability. The features of the antennas enable more precise navigation and enhanced user experiences for personal vehicles, commercial fleets, or autonomous systems. The antennas have a IPX6- or IP66-rated waterproof and dustproof design for reliable operation in harsh conditions. KP Performance, kpperformance.com
