Category: Applications

  • Mosaic, Movella improve mobile mapping and geospatial analysis

    Mosaic, Movella improve mobile mapping and geospatial analysis

    Image: Mosaic/ Movella
    Image: Mosaic/ Movella

    Mosaic and Movella have collaborated to combine the Mosaic 51 and Mosaic X camera systems with Movella’s Xsens Vision Navigator (XVN). The collaboration aims to bolster GIS platform integration and allow for extensive and precise 3D reconstruction. It uses inertial measuring unit (IMU) data generated by XVN and directly connects to the OBD port. The integration is ideal for precise mapping and surveying applications.

    The XVN, which is fully integrated with Mosaic cameras, offers centimeter-level accuracy using real-time kinematic (RTK) and incorporates orientation information to eliminate the need for additional post-processing steps to achieve precise positioning. The seamless georeferencing of stitched images, including the embedding of orientation data, is automatically executed as part of the stitching process.

    The Mosaic 51 system can capture up to 12K resolution in challenging environments. The Mosaic X extends these capabilities and integrates seamlessly with photogrammetry technologies for comprehensive mobile mapping.

    Movella’s Vision Navigator stands out as a dual RTK GNSS/INS and vision-enabled navigation unit, adept at tracking accurate 3D position, velocity and orientation in challenging outdoor and GNSS-denied environments. The solution is supported by innovative Visual Inertial Odometry technology.

  • In the Field: Help survey monuments complement GNSS

    In the Field: Help survey monuments complement GNSS

     

    Figure 1: Utility access box installed over CORS reference mark Whitefish Pt A (NGS PID AA8050) at USCG lighthouse. (Photo: Jeff Olsen)
    Figure 1: Utility access box installed over CORS reference mark Whitefish Pt A (NGS PID AA8050) at USCG lighthouse. (Photo: Jeff Olsen)

    GNSS users who appreciate that physical monuments can provide verification of GNSS observations can do four things to preserve those monuments and make them more accessible. References below are to U.S. national agencies, but most countries have equivalent agencies.

    1. Install a valve box over each buried control point recovered or set, whether the point is for boundary or geodetic surveying. Include National Geodetic Survey (NGS) deep-rod marks that have a buried logo cap.
    2. Advocate with the Secretary of the Interior and United States Geological Survey (USGS) director that USGS scan its paper geodetic data sheets and post the scanned pdf files online.
    3. Adopt the geodetic marks in your area. Visit them. Keep them free of brush or other blockages. Maintain descriptions and photos up to date by submitting recovery notes to NGS as needed. Participate in the NGS GPS on Benchmarks program.
    4. Consider recovering all the marks in an NGS level line. Alternatively, all the USGS marks in a 15’ quadrangle, the geographic unit USGS uses to publish its geodetic data.
    Figure 2: Example of USGS vertical data published by 15’ quadrangle.
    Figure 2: Example of USGS vertical data published by 15’ quadrangle.

    Regarding the first of these actions, a valve box is a utility standard. It identifies to non-surveyors that there is something under the box to which one should pay attention, thus increasing the mark’s chances of survival.

    The box lid is generally obvious, eliminating or at least reducing the search time for surveyors, who only need to walk up to the box.

    It replaces the soil that previously covered the mark, reducing excavation time. A surveyor only needs to open the lid and brush off the mark. Rectangular and round boxes in several sizes are available to accommodate different-sized monuments. While the time and materials to install a box may be an overhead cost to your company, it is well worth the investment.

    Regarding the second of these actions, the positions and heights published for most USGS control marks are based on superseded datums. However, that old data can be useful for evaluating trends. The marks are usually stable and can be reused in new projects.

    While NGS has observed some of these marks and published datasheets for them, they are by far the minority of all the USGS marks in the country.

    There are thousands of these sheets, 50 shelf-feet of them, organized by 15’ quad. Some sheets, mainly in the East, have been scanned and put online by various state agencies or utility companies. The USGS Rolla office has scanned most of the eastern states but has not posted the files online.

    Generally, a request for USGS geodetic data turns into a request for paper sheets, such as those shown in Figure 2, to be scanned and emailed. Putting them online would preserve this record of what it took to survey and map our country, allowing the marks to be tied into new control surveys.

  • Launchpad: Lidar systems, PNT platforms and UAVs

    Launchpad: Lidar systems, PNT platforms and UAVs

    A roundup of recent products in the GNSS and inertial positioning industry from the February 2024 issue of GPS World magazine.


    SURVEYING & MAPPING

    ComNav Technology

    Handheld GIS Data Collection Solution
    For outdoor operations

    The handheld P6H solution is designed for GIS data collection and outdoor operations. Featuring a GNSS high-precision positioning module, rugged IP67-rated design, and 6-inch sunlight-readable display, the P6H offers positioning accuracy in harsh environments.
    Equipped with a SinoGNSS self-developed high-precision K8 board and antenna, it can track all running and planned constellations with 1,590 channels, including GPS, BeiDou, GLONASS, Galileo, QZAA, IRNSS, and SBAS.

    The P6H offers users centimeter- or decimeter-level accuracy. Its IP67 rating protects against dust and water to enhance its efficiency and durability in tough environments.

    The device comes equipped with Survey Master and robust GIS functions, which allow users to take measurements of geographic elements and store the results as attribute data for subsequent analysis, calculation, and visualization. It also includes a mock location function for users to accurately share Survey Master’s position with P6H. The location data can then be accessed on a third-party GIS software.

    It is also compatible with common GIS software such as ArcGIS Collector, Mapit GIS, and QGIS. Additionally, the P6H features an 8-core 2.0 GHz processor, up to 128 GB of storage and up to 6 GB of RAM to offer users smooth software operation and efficient data processing.

    PH6, which features a high-precision GNSS module and antenna, also incorporates 4G LTE, Wi-Fi, and Bluetooth to improve its data transmission and sharing capabilities.

    ComNav Technology, comnavtech.com

    YellowScan

    Bathymetric Lidar System
    Maps underwater topography

    YellowScan Navigator is a bathymetric lidar system designed for surveyors to map underwater topography in rivers, ponds, and coastal areas.

    The system features a laser scanner developed in-house over the course of five years and has been heavily tested to achieve optimal performance. The compact system can map waterbeds with a depth of up to 3 m and can reach a depth of 18 m in perfectly clear water conditions, according to the company. It can be flown up to 100 m above the water surface and provides measurements with an accuracy of 3 cm. Additionally, a camera is embedded for true-color data visualization.

    YellowScan, yellowscan.com

    DJI

    3D Model Editing Software
    For aerial surveying, transportation, and emergency responses

    DJI Modify is an intelligent 3D model editing software. It can be seamlessly integrated with DJI’s enterprise UAVs and 3D modeling and mapping software, DJI Terra. When integrated with these products, the software can be used for aerial surveying, transportation, and emergency responses.

    DJI Modify paired with DJI Terra offers users an end-to-end solution from modeling to model editing. Once DJI Modify has been enabled, DJI Terra files for model editing are automatically generated, including pre-identified objects and pre-processing of the model. It is designed to make repairing common 3D model defects seamless and efficient. As of early 2024, DJI Modify will only support repairing models built by DJI Terra.

    DJI Modify allows for model files to be quickly imported and exported to the DJI Terra and other third-party software. Its intelligent auto-repair editing supports flattening, editing textures, repairing water surfaces, removing floating parts, and filling holes. Edits can be made using one-click repairs or manually by selecting custom polygons, areas or meshes.

    The software’s smoother model display technology allows high- and low-quality models to be viewed and edited in a single interface. Changes made can be synchronized across both models and previewed immediately, which allows users to address model editing issues in real-time.

    DJI, store.dji.com


    OEM

    Oxford Technical Solutions (OxTS)

    GNSS/IMU
    Uninterrupted position, orientation, and dynamics

    RT3000 v4 GNSS inertial measurement unit (IMU) combines two survey-grade GNSS receivers with OxTS’ IMU10 inertial technology. The RT3000 v4 offers uninterrupted position, orientation and dynamics in challenging environments.

    The IMU will reach the desired specification within three minutes of low dynamic movements, which reduces the time and space required for high dynamic maneuvers before each data collection.

    Users can customize the INS with optional features and software integrations to create the ideal INS for individualized projects, including lidar surveying and mapping or positioning in GNSS-denied or challenged environments.

    Oxford Technical Solutions (OxTS), oxts.com

    SiLC Technologies

    Precision Lidar Technology
    Provides vision capabilities in challenging environments

    The Eyeonic Vision System Mini (Eyeonic Mini) supports sub-millimeter resolution in a reduced size. The system integrates a full multi-channel FMCW lidar on a single silicone photonic chip and an integrated FMCW lidar system-on-chip (SoC).

    The Eyeonic Vision Chip combines crucial photonics functions into a coherent vision sensor. The system’s accuracy stems from a 4-channel FMCW LiDAR chip — supported by Indie Semiconductor Surya SoC technology — to provide robots with sub-millimeter depth precision from distances exceeding 10 m.

    The technology offers enhanced precision and can be used in automation, including warehouse logistics and artificial intelligence (AI) machine vision applications. Palletizing robots equipped with the Eyeonic Mini can view and interact with pallets, which aims to optimize package placement and truck loading with greater efficiency and safety.

    SiLC Technologies, silc.com

    SiTime Corporation

    PNT Platform
    Used in critical defense operations

    The Endura Epoch Platform provides robust and resilient positioning, navigation, and timing (PNT) services critical in defense operations.
    The MEMS oven-controlled oscillator (OCXO) can boost the resilience of PNT systems and other equipment, including radars, field and airborne radios, satcom terminals, and avionics against spoofing, jamming and other disruptions in GPS signals.

    Based on the Epoch Platform, the Endura Epoch MEMS OCXOs are designed to meet the challenging shock and vibration conditions found in aerospace and defense. These devices are manufactured using semiconductor processes that deliver the reliability and quality expected from silicon devices. The same level of reliability cannot be achieved by quartz crystal OCXOs, specifically in extreme conditions.

    The Endura Epoch MEMS OCXOs, compared to quartz crystal OCXOs, includes various features and benefits, including programmable frequencies from 10 to 220 MHz; a 20,000 g shock survivability rating; up to 20 times better frequency stability over temperature; up to three times better Allan deviation, a measure of short-term frequency stability; surface-mountable, small footprint and low height 9.0 x 7.0 x 3.6 mm; low weight of 0.35 g; 420 mW steady state power.

    SiTime Corporation, sitime.com

    Murata

    IMU
    With an XYZ-axis gyroscope and accelerometer

    The SCH16T-K01 is an inertial measurement unit (IMU) featuring a XYZ-axis gyroscope and a XYZ-axis accelerometer, for a total of six degrees of freedom.

    The SCH16T-K01 includes a sophisticated gyro with typical bias instability of 0.5 dph and up to 0.3 mdps/√Hz noise density. The accelerometer has a dynamic range of up to 26 g, which provides resistance against saturation and vibration.

    The component’s output is internally cross-axis compensated, which eliminates the need for extensive calibration. Through the integration of these features, the SCH16T-K01 can deliver accurate measurements in machine control and guidance without field calibrations.

    It is suited for industrial applications such as construction and agricultural machines, material handling equipment, marine instrumentation, robotics, and UAVs.

    Murata, murata.com

    ANELLO Photonics

    3-Axis Optical Gyroscope IMU
    For GPS-denied environments

    The ANELLO X3, a 3-axis optical gyroscope inertial measurement unit (IMU), is designed for GPS-denied and challenging environments.

    The IMU leverages ANELLO SiPhOG (Silicon Photonics Optical Gyroscope) technology and serves as a light, low-power tri-axial optical gyroscope offering high accuracy, performance, and reliability for autonomous applications.

    The ANELLO X3 can be used in a variety of applications, including autonomous commercial and defense applications involving robots, UAVs, electric vertical take-off and landing (eVTOL) aircraft and various maritime and land vehicle applications, including high-accuracy surveying and mapping.

    ANELLO Photonics, anellophotonics.com


    MOBILE

    Septentrio

    Smart Antenna
    Centimeter-level RTK positioning

    The AntaRx smart antenna is designed for machine automation and control in construction, precision agriculture, and logistics. It is enclosed in a rugged and compact housing for simplified installation and can handle high levels of shocks and vibrations, making it ideal for harsh industrial environments such as construction and mining.

    The multi-frequency receiver offers centimeter-level real-time kinematic (RTK) positioning and can be used in inertial navigation system (INS) integration, dual antenna mode, and 4G cellular communication. It is available in several configurations, including as a GNSS smart antenna or a GNSS/INS smart antenna system and can be integrated as an inertial measurement unit (IMU).

    The receiver technology integrates the company’s GNSS+ algorithms, including advanced multipath mitigation, which offers uninterrupted operation in challenging conditions such as near high structures or machinery.

    Septentrio, septentrio.com

    SatLab Geosolutions

    Handheld Scanner
    With SLAM technology

    The Lixel X1 is a powerful 3D scanner that combines lidar, visible-light and motion cameras, and high-precision inertial sensing using SatLab’s simultaneous localization and mapping (SLAM) technology.

    Data and scene reconstruction can be previewed in real time and can be exported immediately after scanning without the need for post-processing, which aims to simplify workflows and enhance efficiency.

    The system enables scans to be resumed from breakpoints, which allows surveys to be broken up into convenient segments. It provides up to 60 minutes of continuous operation and can be easily mounted to UAVs and other mobile mapping platforms.

    SatLab Geosolutions, satlab.com

    Antenova

    Ceramic Antenna
    For connectivity on L1 GNSS signals

    Admotus is a surface-mount ceramic antenna designed for connectivity on L1 GNSS signals on all constellations, including GPS-L1 at 1575.42 MHz; GLONASS L1, 1602MHz; Galileo L1, 1575.42 MHz; BeiDou (B1); and QZSS. It offers comparable performance to a small patch antenna on a small ground plane.

    The ceramic antenna has an ultra-low profile measuring a mere 1.0 x 0.5 x 0.5 mm, requires 7 x 15 mm clearance area and offers improved performance on small PCB sizes.

    Admotus offers a peak gain of 0.9 dBi with an average gain of –2.6 dB and offers maximum return loss of –11.5 dB and a maximum VSWR of 1.8:1. A companion evaluation PCB is also available for internal analysis.

    It is suitable for all GNSS positioning applications in the L1 band (1559 – 1609 MHz) such as wearable devices for fitness and medical monitoring, small portable tracking devices used to track keys, pets, bikes, UAVs, agricultural robotics, and telematics devices.

    Antenova, antenova.com

    Juniper Systems

    Rugged Tablet
    For mobile field workers

    The Mesa 4 Rugged Tablet features a 7-inch display and runs on Windows 11. It is designed to provide powerful rugged computing and data collection to mobile field workers.

    The Mesa 4 comes with a new Intel N200 processor. It offers up to three times the CPU performance of the Mesa 3 and has an increased RAM size and speed to enhance its processing power. Mesa 4 has an IP68 rating, MIL-STD-810H certification and ergonomic design for all-day carrying.

    Juniper Systems, junipersys.com


    UAV

    RuggON

    UAV Ground Control System
    On an 8-inch rugged tablet

    The Ground Control System (GCS) for UAVs is centered around RuggON’s LUNA 3 8-inch rugged tablet. It is designed to provide real-time control, telemetry, and satellite positioning for connected UAVs.

    GCS is designed to provide users more control over a variety of UAVs by using the LUNA 3 rugged tablet, which has a large and high-definition screen to provide video feedback during operations. The system is also certified to provide GNSS positioning and tracking services.

    Featuring a low-latency video software decoder, GCS allows for real-time high-resolution video viewing and data collection. Engineered to withstand dust, shock, and water, the control system can withstand challenging environments.

    The LUNA 3 8-inch rugged tablet stands as a powerful and efficient model within its class, powered by an Intel Core i5 processor (1145G7E) with Intel Iris Xe graphics and the Windows operating system. Its sunlight-readable display supports night and stealth modes, which is cruicial for law enforcement and military applications. The tablet offers touchscreen functionality for enhanced operator convenience, complemented by ethernet and optional Wi-Fi 6, and 4G LTE connectivity.

    RuggON, rugon.com

    Aeromao

    VTOSL
    Bridging the gap between land and sea

    The VT-Naut, vertical takeoff and short landing (VTOSL) is a versatile aerial solution designed for a variety of applications, including high-precision mapping and surveying for inspection, scouting, observation, and agriculture.

    The VT-Naut can land on water, which makes it ideal for shipboard or coastal operations, and opens new ways for users to collect and observe data. It has a long-range telemetry link of 30 km and a flight endurance of up to 90 minutes. Its compact and robust body design provides durability and resilience in harsh environments.

    The VT-Naut UAV system offers a cost-effective alternative to full VTOL platforms, particularly for users who require extensive surveying capabilities and have some flexibility in landing site selection. The system eliminates the extra costs associated with acquiring and operating a VTOL multirotor drone.

    Aeromao, aeromao.com

    Nearthlab

    Folding UAV
    For challenging environments

    The AIDrone UAV is designed for a variety of applications, from infrastructure inspections and renewables to defense and public safety.
    The UAV features a high-performance payload, fitted with a 64MP EO/IR camera mounted on a dual-axis gimbal that can support vertical rotation of up to 200°. AIDrone can spot millimeter-sized cracks and detect subtle temperature changes in challenging environments.

    AIDrone uses Nearthlab’s vision-based autonomous flight technology to operate autonomously — in zero-light and GPS-denied environments — both indoors and outdoors.

    It weighs around 4 lbs and has a foldable structure. AIDrone is designed for intelligence, surveillance, and reconnaissance (ISR) purposes, which makes it ideal for crisis management scenarios such as wildfire response and law enforcement.

    Nearthlab, nearthlab.com

    Krattworks

    ISR UAV
    With jamming resistant-radio

    The Ghost Dragon intelligence, surveillance, and reconnaissance (ISR) UAV offers higher resistance against jamming and spoofing. The UAV is equipped with a thermal and visual light camera and jamming-resistant radio. Its wide frequency hopping radio is used to provide a jamming-resistant video and telemetry link, which makes it difficult to detect the UAV and interfere with the mission.

    The Ghost Dragon ISR uses a dual-band GNSS module that operates on both L1 and L5 bands, which allows for flight operations even in challenging environments. The UAV can operate in radio silence mode in the presence of GNSS and store reconnaissance data on an encrypted SD card to view after the UAV has landed. The video and target location information streamed to the operator is also georeferenced.

    The UAV can be redirected, flown back to base, or handed to another operator at a different ground control station at any time.

    Krattworks, krattworks.com

  • Aligning the trades: GNSS for architecture, engineering and construction

    Aligning the trades: GNSS for architecture, engineering and construction

    Surveyors for architecture, engineering, and construction projects require GNSS receivers that have high accuracy and are rugged enough to survive the dust, water, and inevitable drops that they will endure at construction sites. They also need to be able to easily share data with architects, engineers, planners, and tradespeople, both at the sites and at the office.

    Photo: Juniper Systems
    Photo: Juniper Systems

    Juniper Systems, which has more than 30 years of experience in mapping and data collection in a wide variety of applications across industries, recently released a real time-kinematics (RTK) activation for its Geode GNSS receiver that allows mapping accuracy down to a centimeter. Pairing a Geode with the company’s Uinta mapping and data collection software and a Mesa rugged tablet makes it easy for users to share their data — such as the locations of fiberoptic telecommunication lines or of utility manhole covers — with other people working on site or at the office. The Geode and the Mesa meet IP68 protection certification for water and dust ingress; they also have MIL-STD-810G certification against drops, vibration, and extreme temperatures.

    In this month’s cover image, the Geode is at the top of the survey pole, the Mesa Rugged Tablet is mounted near the user’s hand, and the screen on the Mesa depicts the Uinta mapping software.

    On construction sites, surveying is an ongoing process. Surveyors are the first on the site, before any other work begins, and the last ones there, to map the project “as built.” Total stations with GNSS receivers, as well as tablets and other mobile digital devices are their essential tools, increasingly complemented by unmanned aerial vehicles (UAV) and lidar scanners. Accuracy is their key contribution. In this month’s cover story on GNSS for architecture, engineering, and construction (AEC), we highlight three building projects: a skyscraper in Sweden, a highway in China, and a luxury resort in the Caribbean.

    Check out these perspectives on architecture, engineering and construction:

    ComNav Technology: Building Sweden’s Tallest Tower

    CHCNAV: Expanding a Highway in China

    EOS Positioning Systems: Building a System to Build an Island Resort

  • Seen & Heard: Deep sea coral reefs and lava in Iceland

    Seen & Heard: Deep sea coral reefs and lava in Iceland

    “Seen & Heard” is a monthly feature of GPS World magazine, traveling the world to capture interesting and unusual news stories involving the GNSS/PNT industry.


    Photo: NOAA Ocean Exploration
    Photo: NOAA Ocean Exploration

    Exploring the Largest Deep-Sea Coral Reef

    Scientists have mapped the largest deep-sea coral reef, stretching hundreds of miles off the U.S. Atlantic Coast. While researchers have known since the 1960s that some corals were present off the Atlantic Coast, the reef’s size remained a mystery until new underwater mapping technology made it possible to construct 3D images of the ocean floor. The National Oceanic and Atmospheric Administration (NOAA) and a team of scientists recently published maps of the reef in the journal Geomatics. The reef extends for about 310 miles from Florida to South Carolina. The total area is nearly three times the size of Yellowstone National Park.

    Photo: ESA
    Photo: ESA

    Lava in Iceland

    Grindavík, a tiny town in Iceland, stands on the brink of volcanic lava flow in images captured by the European Space Agency (ESA). The lava originates beneath the Svartsengi volcano system — roughly 2.5 miles north of the town — which erupted on December 18 and January 14. ESA’s Sentinel2 satellite revealed the glow of the lava flow’s heat, not far from houses and other infrastructure within Grindavík. The town, with just 3,800 residents, has faced constant evacuations, as well as mini-earthquakes as a result, The Guardian reported.

    Photo: Maris Maskalans / iStock / Getty Images Plus / Getty Images
    Photo: Maris Maskalans / iStock / Getty Images Plus / Getty Images

    Lidar Reveals Lost Cities in the Amazon

    In the Amazon rainforest, archeologists have discovered a vast and highly complex system of ancient cities dating back nearly 3,000 years. Located in Ecuador’s Upano Valley, the structures lie in the eastern foothills of the Andes mountains, according to a study published in the journal Science. After more than 20 years of research, the ancient urban centers were only discovered when the Ecuadorean government employed lidar technology. Researchers from France, Germany, Ecuador and Puerto Rico conducted a lidar survey that covered roughly 300 km2, which revealed a landscape full of organized human activities, including more than 6,000 rectangular earthen platforms, as well as agricultural terraces and drainage systems. According to the study, these structures formed at least 15 distinct settlements, which were connected by a system of wide, straight roads.

    Photo: nickalbi / iStock / Getty Images Plus / Getty Images
    Photo: nickalbi / iStock / Getty Images Plus / Getty Images

    Tracking Cattle from Space

    Australian scientists are attempting to track 1,000 cattle and buffalo using artificial intelligence (AI), and GPS satellites, reported euronews.next. An estimated 22,000 cattle and buffalo roam free in a remote area of Arnhem Land, Australia, though the exact number is unknown. Scientists are now collaborating with stockmen and indigenous rangers in a four-year program that involves monitoring feral animals from space. Titled SpaceCows, the remote herd management system is backed by the Australian government’s Smart Farming Partnership initiative. Local rangers and stockmen are chasing and catching animals to attach solar-powered tags with GPS receivers.

  • ComNav Technology: Building Sweden’s Tallest Tower

    ComNav Technology: Building Sweden’s Tallest Tower

    When completed, the Karlatornet will be Sweden’s tallest building and redefine the skyline of the city of Gothenburg, rising to 74 stories and 246 meters (the Burj Khalifa in Dubai, currently the tallest human-made structure, is 828 meters high). Ensuring that the building remains stable even when deformed by very strong winds, sun exposure, seismic activity, settling or shrinkage will require very high precision construction methods. To ensure its vertical alignment, the engineers are using the core wall control survey (CWCS) method, which relies on active GNSS control points, and SinoGNSS T300S high accuracy GNSS receivers.

    A SinoGNSS multi-constellation T300 GNSS receiver and a 360° prism mounted at the top of a building under construction. (Photo: ComNav Technology)
    A SinoGNSS multi-constellation T300 GNSS receiver and a 360° prism mounted at the top of a building under construction. (Photo: ComNav Technology)

    The CWCS method was first used during the construction of the Burj Khalifa and was subsequently applied in the construction of many other high-rise buildings around the world. Swedish surveying company Teodoliten decided to apply this method for the Karlatornet project. Core walls, which are key structural components of high-rises, require a layered construction approach, with multiple concrete pours for each core wall element. CWCS makes it possible to precisely align these core walls with the vertical axis of the building during construction, using GNSS receivers, total stations, inclinometers, and other tools.

    When constructing a tall building, it is essential to continuously measure the positions of various elements at its summit to ensure their vertical alignment. This is typically done by placing at the top of the building four GNSS receivers — referred to in this context as active GNSS control points — each with a 360° prism at the bottom. By sighting the prisms and using the 3D coordinates from the GNSS receivers, a surveyor then sets up a total station. This obviates the need for an extensive array of ground control points, which are often not visible from the top, and for holes in the slabs to accommodate vertical laser plummets. Additionally, observations from a nearby reference station are used to post-process the data from the GNSS receivers in post-processed kinematic (PPK) mode to achieve an accuracy of a few millimeters. The Karlatornet project uses four SinoGNSS multi-constellation T300 GNSS receivers for the active control points.

    It is also necessary to correct for the movement of the survey platform as the building’s main axis is flexed by the loads applied to it during construction. This is achieved by placing a series of high-precision dual-axis inclinometers along the core walls and then applying a least squares adjustment that takes into consideration the floor height of the measuring devices.

    The SinoGNSS T300 receivers operating in GNSS-RTK mode also will be used to monitor and document post-construction building deformations.

  • Topcon upgrades TSS network

    Topcon upgrades TSS network

    Photo:Topcon Positioning Systems’ U.S.-based Topcon Solutions Store (TSS) network now offers the Topcon Layout Navigator (LN) combined with HP SitePrint. The integration aims to advance construction automation and efficiency for a wide range of professionals including general contractors and mechanical, electrical and plumbing (MEP) contractors.

    Integrating Topcon’s LN-150 with HP SitePrint’s autonomous robotic unit that prints site layout plans directly on construction floors aims to advance construction technology. The solution is designed to streamline the site layout process, which is to save time and cost by replacing manual layout methods with digital precision.

    The LN-150 supports Wi-Fi and long-range Bluetooth communication. It is also compatible with cloud-based workflows to offer precise 3D layout capabilities that are increasingly vital due to labor shortages.

    TSS now offers the solution across its 20-state network. Click here to learn more.

  • Stonex launches hybrid mobile mapping solution

    Stonex launches hybrid mobile mapping solution

    Image: StoneX
    Image: StoneX

    Stonex has launched the X70GO SLAM laser scanner designed for fast and efficient large-area surveys. It combines mobile scanning with a stationary mode to scan with high resolution to enhance overall surveying capabilities.

    X70GO is a real-time 3D model reconstruction device that integrates an inertial navigation module, high-performance computer and storage system. It is equipped with a 360° rotating head, which, combined with the SLAM algorithm, can generate high-precision point cloud data. The built-in 512GB memory disk stores survey results and the dismountable handle has a 1.5-hour battery life.

    A 12MP RGB camera offers texture information, while a visual camera aims to enhance the real-time preview with the GOapp. Mapping results can be generated immediately inside the scanner. Users can then color the points and improve their accuracy during post-processing with GOpost software.

    The system comes with a hybrid scanning capability. The X-Whizz mode combines the advantages of SLAM mode with the resolution of a static scan, which eliminates the need for multiple scan stations. Users can move around the scene to collect the entire 3D point cloud without time-consuming cloud-to-cloud alignment.

    The technology incorporated in the new scanner is designed to provide extended range, a higher number of points per second and advanced onboard processing algorithms. The SLAM laser scanner is well-suited for challenging and demanding environments and can be used in a variety of applications, including BIM, industrial sites, real estate, heritage preservation, tunnels and mining.

    Users can add an RTK module to set a point cloud in a global coordinate system. This can support the addition of GNSS information to lidar and inertial measurement unit (IMU) in the SLAM algorithm. In situations with limited GPS connectivity – such as indoors or in challenging environments – the system will rely on lidar and the IMU for positioning purposes.

  • Inertial Labs enhances remote sensing payload

    Inertial Labs enhances remote sensing payload

    Image: Inertial Labs
    Image: Inertial Labs

    Inertial Labs has launched the RESEPI lidar Gen-II remote sensing payload instrument. It comes in three modes to cater to users’ individual operational needs: aerial mode for comprehensive airborne data collection, mobile mode for dynamic vehicular data collection and a versatile handheld/backpack that aims to provide portability and ease of use for ground personnel.

    The RESEPI lidar Gen-II has a 175% increase in computing power, designed to speed up processing and enhance efficiency during complex tasks. Its memory capacity has been increased by 700%, which allows for extensive data handling and improved system performance. The system’s 50% increase in storage capacity aims to facilitate longer durations of data collection without frequent offloads.

    The Gen-II features seamless integration capabilities with UAVs and other platforms. The system’s sensor-agnostic design allows for external sensors to be easily integrated, including lidar and cameras. It can also compute point clouds, trajectories and solutions in real time, which is critical in time-sensitive missions.  The system can be used in a variety of applications including mapping, inspection, autonomous, navigation and robotics.

  • Fairview Microwave launches military-grade antennas

    Fairview Microwave launches military-grade antennas

    Image: Fairview Microwave
    Image: Fairview Microwave

    Fairview Microwave has launched its advanced military-grade antennas. The new products include ruggedized GPS, manpack omni and vehicle omni antennas designed for mission-critical applications such as vehicle navigation, personnel communications, vehicle communications, electronic warfare and jamming.

    The military-grade antennas meet MIL-STD-810 to offer durability while adhering to strict quality standards. The antennas are also compliant with the Trade Agreements Act (TAA), which makes them suitable for government and defense applications.

    Built to withstand tough conditions, these antennas feature heavy-duty construction and a rugged design for long-lasting performance in challenging environments. They are designed to perform in extreme weather conditions and on rough terrains.

    Its robust construction and NATO/U.S. standard mounting options aim to simplify integration into various setups during critical operations.

  • Trimble launches three new products

    Trimble launches three new products

    Trimble has released three new surveying and mapping products: SiteVision 5.0, TDC6 and Trimble Radio. All three products are available through Trimble Geospatial authorized distributors.

    Trimble SiteVision Software 5.0. (Image: Trimble)
    SiteVision Software 5.0. (Image: Trimble)

    SiteVision Software 5.0 is a high-accuracy outdoor augmented reality system, now with a 3D scan tool. The new 3D scan tool allows users to use lidar sensors available on some Apple Pro devices. The Trimble DA2 GNSS receiver is designed to capture point clouds efficiently and accurately with a single handheld solution.

    Users can visualize 3D scan data directly in the field with SiteVision’s augmented reality view. The software allows users to create as-builts of the job site on the go, measure and plan resource allocation, reduce scan times, supplement UAV data and more by combining scanning and precision in a mobile solution. The product aims to facilitate practical and accessible field-to-office workflows for surveyors, contractors and engineers.

    TDC6. (Image: Trimble)
    TDC6. (Image: Trimble)

    TDC6 is a handheld GNSS data collector designed for high-performance construction surveying.

    The device allows contractors to work with more complex data sets more effectively in the field, connect to the office for on-the-spot approvals, and quickly communicate changes to field crews.

    The small, rugged device offers integrated Wi-Fi and Bluetooth, built-in cameras and 5G compatibility in a lightweight, shock-, dust- and water-resistant package. The device integrates seamlessly with Trimble data collection applications, including Trimble TerraFlex GIS software and Trimble Access survey field software, as well as third-party apps such as Esri ArcGIS Field Maps.

    TDL450B radio. (Image: Trimble)
    TDL450B radio. (Image: Trimble)

    The TDL450B radio is a 450 MHz external radio with Bluetooth for transmitting, receiving and repeating GNSS corrections. It offers flexible configuration options and rugged reliability for efficient use of GNSS in various applications. Designed to support Trimble and third-party RTK base stations, this sophisticated radio modem puts Trimble’s newest data link technology in the hands of users on the job site. The TDL450B radio is an advanced, high-speed, wireless UGH data radio built to endure harsh conditions.

     

  • Final grounding for Ingenuity?

    Final grounding for Ingenuity?

    NASA’s Ingenuity took this picture on Jan. 18, 2024. The sand-dune, rock-less area where Ingenuity last showing the shadow of its damaged rotor blade. (Image: NASA)
    NASA’s Ingenuity took this picture on Jan. 18, 2024. The sand-dune, rock-less area where Ingenuity last
    showing the shadow of its damaged rotor blade. (Image: NASA)

    It appears that the little extraterrestrial drone that could has come a cropper on Mars and now will not be flying again – it is permanently grounded. The Jet Propulsion Lab (JPL) crew managing Ingenuity was running a regular scouting trip over a featureless sand-dune area on Dec. 22, 2023. Suddenly, the UAV’s visual navigation system malfunctioned, which led to a hard emergency landing.

    When the autonomous navigation system did not have any landmarks to match its digital reference map, it reverted to an emergency landing. Maybe the poor guy should have had a few moments to gather its airborne wits and to come down softly, but alas at the same time the connection with the rover was lost, he dove for cover and broke a chunk off at least one of the counter-rotating blades. This now apparently prevents further take-offs. Mars’ atmosphere is only 1% as dense as Earth’s, so those rotors need all their designed lift capabilities to grab enough ‘air’ and get the 4 lb helicopter airborne. The flight control system may be unable to cope with the resulting compromised lift profile. Either way Ingenuity’s flying days are over, according to NASA.

    Conceptual design for the Sample Recovery Helicopters (Image: Aerovironment/ NASA/ JPL)
    Conceptual design for the Sample Recovery Helicopters
    (Image: Aerovironment/ NASA/ JPL)

    Ingenuity completed 72 flights over the course of three years, surpassing its original 30-day mission to prove the possibility of a miniature, autonomous helicopter flight on Mars. After its initial four flights, NASA and JPL chose the UAV to scout out safe paths for the Perseverance rover from an airborne perspective.

    All is not lost for Ingenuity, however. AeroVironment, the UAV manufacturer that co-developed Ingenuity with NASA/JPL, has been awarded another contract to design and develop two prototype ‘sample-return’ helicopters for NASA’s next major Mars expedition.

    Building on Ingenuity’s design, the new UAV will have wheels and a grappling contraption to pick up sample tubes, which could assist in the Mars sample recovery mission. Perseverance is currently expected to be the lead in transferring cached sample tubes to the new Sample Retrieval Lander for return to Earth, but the new helicopters provide a different backup option on Mars for pick-up and transport of the tubes.


    Back here on Earth, the latest tragic news from the Middle East — the UAV attack on the US Tower 22 military outpost in Jordan which cost three soldiers their lives and injured at least 34 others — appears to have been due to a lack of defensive capability. Earlier news releases indicated that the kamikaze UAV had arrived at the same time as the expected return of a U.S. UAV from the base, implying that defenses may have been taken down temporarily. It now seems that there was little active defense to prevent the attack.

    The attacking UAV reportedly came in very low, and the base was unable to track its approach. The base is said to have defensive signal jamming capabilities, but without radar visibility of the UAV and knowing an attack was in progress, the jammers may have been ineffective or inactive.

    Tower 22 was thought of as a low-risk-of-attack U.S. base, perhaps supporting another U.S. base in Syria with logistics, so no active drone suppression system had been provisioned. This assessment, and those for similar bases in the area and around the world, may perhaps have to be revised and sufficient active defenses may need to be installed.


    While U.S. and Ukrainian forces deal with attacking drones, Iran has unveiled its latest addition to its arsenal of one-way killer unmanned aircraft.

    Image: Iranian Military Media
    Image: Iranian Military Media

    Iran displayed the Shahed-238 in public in November 2023, so there may have already been enough time to get some of these very fast-flying vehicles through the manufacturing process and begin deliveries to Russia and Iranian proxy agents. The advantage of jet-power is of course significant speed over propeller-driven variants, while the range may be significantly less for the same fuel capacity. The disadvantage for the United States and Ukraine is that most fielded conventional UAV detection radars have difficulty seeing fast targets in time to activate and aim defensive weapons.

    The situation for Ukraine and the United States in the Middle East appears to be worsening as large numbers of Iranian-supplied and locally manufactured kamikaze UAVs are pumped into the war zone and ‘hot spots’ in the Middle East.

    It is sad that Mars aerial views may be limited as Ingenuity seems to be permanently grounded, and the Middle East doesn’t sound too safe to be hanging around in either! Further escalation of prices might be expected, too, as a good part of the volume of cargo ships settle into sailing around Africa. Let’s look for better news in the coming months.