At a recent product launch event, ComNav Technology unveiled a new technological ecosystem for surveying. Under the theme “From Earth to Ocean,” the company presented a suite of next-generation innovations engineered to advance the frontiers of geospatial and hydrographic intelligence.
ML300 mobile laser scanning system
Precision surveying in complex environments
The ML300 mobile laser scanning system is designed for large-scale surveying projects and complex environments. It incorporates multi-mode fusion positioning technology, integrating GNSS, IMU, DMI and laser SLAM, providing a new approach to 3D scene reconstruction.
This system is designed for environments where GNSS signals are limited or entirely lost, such as tunnels, urban canyons, and densely built-up areas. In these challenging environments, traditional surveying methods often fail to deliver the required precision, but with ML300’s intelligent multi-mode positioning, we ensure accurate 3D scene reconstruction regardless of the conditions.
The ML300 mobile laser scanning system incorporates multi-mode fusion positioning technology. (Photo: ComNavTech)
The core advantages of the ML300 lie in its high precision and flexibility. By combining Laser SLAM and DMI technologies, it can operate effectively without GNSS signals, eliminating errors and improving modeling accuracy. This breakthrough offers new solutions for large-scale land surveys, urban infrastructure monitoring, and smart city planning, among others.
Designed for operational efficiency, the ML300 boasts a modular and highly flexible design. It can be customized with various sensors, including road cameras, Ladybug 6 panoramic cameras, and wheel encoders, making it adaptable to a wide range of project needs. Additionally, with up to 6 hours of battery life and external power source support, the ML300 ensures stable performance during long working hours.
Whether for highway surveys, urban power line inspections, dynamic forestry management, or smart transportation system development, the ML300 provides precise and efficient data support, facilitating digital transformation across various industries.
The SV3 USV is designed to be portable and usable by a single surveyor. (Photo: ComNavTech)
SV300 unmanned surface vessel
Intelligent underwater surveying
The SV300 unmanned surface vessel was designed specifically for intelligent underwater surveying. This autonomous vessel is optimized for operation in complex aquatic environments, integrating high-precision GNSS positioning, AI technologies, and autonomous navigation capabilities, enhancing both the efficiency and accuracy of hydrographic surveys.
Its design focus on making underwater exploration smarter, safer and more efficient. Its ultra-light design (28 kg) and compact hull (less than 1 meter in length) enable single-person operation. The SV300 can be stored in the trunk of a small vehicle.
Equipped with a high-performance single-beam bathymetric measurement system, the SV300 can measure depths up to 200 meters, ensuring reliable data. Its streamlined hull and powerful motor enable a top speed of 7 meters per second, accelerating survey speeds without compromising accuracy.
The intelligent features of the SV300 enhance measurement efficiency and ensure the safety of personnel. Whether used for river, lake or ocean surveys, or in emergency response and pipeline inspections, the SV300 adapts to complex environments inunderwater exploration.
HYD10 portable echo sounder
Compact and precise
The HYD10 is a lightweight, high-precision echo sounder designed for modern surveying tasks. Weighing 0.3 kg for the main unit and 1.5 kg for the transducer, its portability means a single operator to carry and operate. Its compact design and Bluetooth capability allow it to function seamlessly in tight spaces and complex environments, removing the need for cumbersome cables.
With a measurement depth range of 0.3m to 200 m, the HYD10 provides high-precision readings with accuracy ±1 cm + 0.1% of water depth and 1 cm resolution. The 200 kHz depth module and narrow 6° beam angle ensure precise, clear data, while an adjustable sound speed range (1300-1700 m/s) adapts to different water conditions.
For greater operational flexibility, the HYD10 integrates with Survey Master software, supporting real-time monitoring, data processing and wireless connections through Wi-Fi and Bluetooth. It is compatible with a variety of positioning devices, including the P6H and P8H tablets, as well as a wide range of RTK receivers. The P6H provides centimeter-level positioning accuracy, while the P8H offers flexible antenna adjustments for various field conditions.
The R80 GNSS Data Collector is designed for modern surveying. (Photo: ComNavTech)
R80 GNSS data collector
Precision in surveyors’ hands
The R80 GNSS data collector is designed to improve field technology, engineered for demanding tasks in construction, mining, surveying and GIS. The R80 has an octa-core processor, delivering rapid CAD and map loading to ensure smooth operation and boost productivity. The ergonomic design with an 18-degree grip angle maximizes one-hand comfort, reducing fatigue during long hours of operation.
The R80 features ultra-wide mechanical keys with tactile feedback, offering precise control with a 0.8 mm travel and pressure sensing. It includes custom quick-measure keys for easy access to measurement functions. The 51-key backlit keyboard and a 6-inch 1080P display ensure clear visibility even in direct sunlight. With a 9000 mAh battery, it supports more than 16 hours of continuous operation. It holds an IP67 rating for water and dust resistance and has passed a 1.5-meter drop test.
It supports 4G LTE, Bluetooth, Wi-Fi and NFC, and has a 13MP autofocus camera for high-definition imagery. Survey Master software, integrated with a CADX engine, enables instant opening of large drawings and ensures smooth field operations.
As the geospatial industry accelerates toward automation and intelligence, ComNav Technologies is redefining its role in the market. In this exclusive interview, ComNav leadership discusses the company’s transition in 2025 — evolving from a traditional GNSS hardware provider into a comprehensive solutions and services company that seamlessly integrates positioning, perception and cloud-based intelligence.
As surveying evolves from manual, point-based measurement to automated, cloud-connected ecosystems, ComNav explains how they’re positioning themselves at the forefront of this industry transformation — empowering professionals to shift from repetitive fieldwork to high-value data processing and decision-making.
What would you consider ComNav’s most significant breakthrough in 2025?
Innovation — as our slogan says, “Innovation Makes a Difference.”
In 2025, ComNav has achieved a key transformation from being primarily a GNSS hardware provider to becoming a comprehensive GNSS solution and service company. We are extending our capabilities beyond traditional receivers and boards into CORS network construction, cloud-based GNSS services, and intelligent software platforms.
This transition marks a major step toward integrating hardware, software, and cloud services, allowing us to deliver not only precise positioning equipment but also complete, scalable solutions for global customers. It reflects our long-term commitment to driving innovation and shaping the future of intelligent navigation.
What key improvements has your technology recently achieved?
ComNav has made significant progress in multi-sensor fusion and core GNSS technology.
We have advanced our real-time multi-sensor fusion technology, integrating GNSS, lidar, camera and IMU to deliver higher reliability and spatial awareness in complex environments. This innovation enables a shift from point-based measurements to full 3D spatial mapping, opening new possibilities for surveying, autonomous systems, and digital twin applications.
ComNav’s real-time multi-sensor fusion technology, integrates GNSS, lidar, camera and IMU to deliver higher reliability and spatial awareness in complex environments.
How is ComNav planning to advance its multi-frequency, multi-constellation GNSS technology in 2025? Which constellations are you now supporting?
We proudly launched the fourth generation of our high-precision GNSS SoC chip, which integrates full-constellation, muti-frequency RF and BB into a single compact design. This chip offers higher positioning accuracy, lower power consumption, and improved anti-interference performance — setting a new benchmark for GNSS receiver technology.
It employs multi-constellation simultaneous equation technology, ground-based and satellite-based augmentation technologies, SBAS technology, RAIM technology to deliver highly reliable position and attitude information to users. The chip supports various positioning modes, including RTK, RTD, PPP, PDP, SPP, and GNSS + INS, making it suitable for a wide range of complex high-precision positioning scenarios.
Which industry sectors saw the most growth for ComNav solutions in 2025 – agriculture, construction, surveying, autonomous vehicles, or others? Are there any successful use cases you can share from these sectors?
ComNav’s Jupiter GNSS receiver integrates a 50 m laser, IMUm and camera technology.
In 2025, geospatial remained the fastest-growing for ComNav.
Driving this growth is our newly launched Jupiter GNSS receiver, which integrates a 50-meter laser, IMU, and camera technology. This combination enables non-contact measurement, greatly enhancing operational efficiency.
Our newly released LS600 laser scanner further expands this innovation. It combines advanced SLAM technology, a built-in RTK module for centimeter-level accuracy, and dual wide-angle cameras for vivid color capture. The LS600 significantly simplifies field workflows and allows users to easily obtain high-quality 3D point clouds, transforming traditional “single-point measurement” into multi-dimensional, intelligent data acquisition. This represents a major leap forward in efficiency, safety, and precision for complex surveying operations.
The LS600 seeks to significantly simplify field workflows. It allows users to easily obtain high-quality 3D point clouds, transforming traditional “single-point measurement” into multi-dimensional, intelligent data acquisition.
At the same time, our agricultural segment has also achieved remarkable growth. The AG501 Pro supports a wide range of guide line designs and delivers operational accuracy of up to 2.5 cm. Continuous software updates and optimization have further improved user experience, making precision agriculture simpler and more efficient. It embodies our commitment to empowering smarter, more sustainable agricultural operations through GNSS innovation.
Are there any new product lines we can expect to see launched next year?
In 2026, ComNav will introduce a new generation of integrated lidar and RTK products, combining high-precision GNSS positioning with advanced laser scanning technology. This integration will enable professionals to capture both geometric and spatial data simultaneously, delivering faster, more comprehensive field data collection.
We are also preparing to release an upgraded handheld laser RTK, designed for maximum portability and ease of use. With enhanced measurement accuracy, longer range, and improved connectivity, it will empower surveyors to perform rapid, precise measurements in a wide range of field environments.
These new product lines reflect ComNav’s ongoing commitment to expanding its technology ecosystem — integrating positioning, perception, and intelligence into one cohesive solution.
How do you see the industry evolving over the next year, and how is comNav positioning itself to stay ahead to market changes and challenges?
We believe the geospatial industry is entering a new stage of intelligence and automation. The traditional boundary between field data collection and office data processing is rapidly disappearing. Surveying is evolving from manual, point-based measurement toward automated, intelligent, and cloud-connected workflows — where data captured in the field is seamlessly processed, analyzed, and visualized in the cloud.
To stay ahead of this transformation, ComNav is focusing on intelligent integration — combining high-precision GNSS with sensors, AI algorithms, and cloud platforms. Our goal is to enable surveyors to shift their efforts from repetitive fieldwork to high-value, intelligent data processing and decision-making in the office.
By investing in smart software, real-time cloud services, and integrated hardware platforms, ComNav is positioning itself as a key driver in building the next generation of intelligent geospatial ecosystems.
The AG501 Pro supports a wide range of guide line designs and can deliver operational accuracy of up to 2.5 cm.
ComNav Technology has released the SinoGNSS LS600 laser scanner, a handheld 3D scanning device designed for professional use in both indoor and outdoor environments.
It integrates lidar, GNSS, an inertial measurement unit (IMU) and dual-camera systems for detailed, colorized point clouds and precise positioning data production. The LS600’s also includes advanced SLAM algorithms, which work in tandem with a built-in real-time kinematic (RTK) GNSS module. This combination allows the scanner to achieve centimeter-level accuracy, even in challenging enviornments. The device’s high-speed lidar system supports 16-line and 32-line configurations, scanning up to 640,000 points per second with a 360° by 270° field of view. Detection ranges are available in both 120 m and 300 m options, accommodating a wide range of surveying applications.
The LS600 features dual 16 MP wide-angle cameras that capture vivid, multi-angle color data. This visual information is merged with lidar data through visual-aided SLAM, enhancing the color fidelity and detail of the resulting point clouds. One of the scanner’s notable features is its Flash Point Cloud Technology, which enables real-time visualization of point cloud data immediately after scanning. This allows users to validate data in the field and make necessary adjustments on site, reducing the need for post-processing and minimizing project delays.
In terms of workflow, the LS600 supports continuous, real-time positioning and data capture without the need for traditional loop closures, a step often required in standard SLAM processes. This advancement can decrease field time and improve overall efficiency. When operating in areas where GNSS signals are unavailable, such as basements or tunnels, users can establish ground control points for post-processing, maintaining high positional accuracy despite challenging conditions.
The scanner is equipped with removable, rechargeable lithium-ion batteries, each providing up to 1.5 hours of continuous operation. Fast charging capabilities and an LED power indicator support efficient field use. Data transfer is facilitated through a USB-C 3.2 Gen 2 interface, and the device includes a 512GB solid-state drive for onboard storage. Designed for handheld operation, the LS600 can also be mounted on a mobile vest or pole, offering flexibility and ease of use in various field situations. Its lightweight, all-in-one construction supports rapid deployment and straightforward operation.
The LS600 is suitable for a range of applications, including construction monitoring, as-built surveying, vegetation assessment, utility planning, urban renewal, mining and emergency response. Its combination of high accuracy, real-time visualization, and flexible deployment options is intended to improve data quality and operational efficiency for professionals across multiple industries.
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.
ComNav’s Jupiter Laser RTK blends GNSS, IMU, laser and dual-camera tech for top accuracy and efficiency. It delivers immersive surveying and stakeout experiences, excelling in hard-to-reach, signal-blocked, or dangerous areas, boosting your work!
Click hereto learn more about the Juniper Laser RTK!
ComNav Technology has released the SV600 unmanned surface vessel (USV) for hydrographic surveying. This remote-controlled vessel incorporates adaptive water-flow straight-line and hovering technology, enhancing efficiency and ease of operation.
A key feature of the SV600 is its dual-moon pool design, which allows for simultaneous deployment of various surveying equipment. This includes Acoustic Doppler current profilers, single-beam echo sounders, side-scan sonar, pipeline detectors and miniaturized multi-beam echo sounders.
The vessel’s design prioritizes versatility and quick transitions between tasks. Its rapid installation feature facilitates seamless switching between different measurement modes, streamlining the surveying process, according to ComNav.
ComNav Technology has revealed the LS600, a handheld 3D laser scanner that integrates SLAM technology, a built-in RTK module and dual 16MP wide-angle cameras. The device employs multi-sensor fusion, including lidar, IMU and cameras, to deliver high performance in both indoor and outdoor environments. It offers 16- or 32-line lidar options, with a scanning range of up to 300 m and a speed of 640,000 points per second for rapid data collection.
The LS600 features an advanced GNSS module that provides centimeter-level accuracy with full-frequency GNSS support. A built-in surveying antenna enhances signal reliability. The dual-lens camera, combined with visual SLAM (V-SLAM), produces detailed color point clouds for realistic and precise visuals. The scanner supports both backpack and pole configurations, making it versatile for applications such as land surveying, engineering, urban renewal, mining, agriculture, forestry and emergency response.
Its automated post-processing capabilities — such as stitching, denoising, and rendering — along with flexible coordinate systems streamline workflows and ensure accurate results. This design allows professionals to achieve precision and efficiency in the field.
ComNav Technology has upgraded its Survey Smart software, enhancing its power, user-friendliness, compatibility, file sharing capabilities, CAD engine and surveying performance.
The update introduces a new user interface optimized based on user habits. It features a new visualization interface, a restructured CAD layout and a flexible toolbar that consolidates common functions across scenarios.
ComNav’s self-developed core component, CADX, has been upgraded to enable instant loading of large drawings for smooth operation. The SinoGeoX feature seamlessly integrates CAD with maps. A new Standing Survey feature has been added to the IMU mode. When activated, it automatically measures points after the receiver remains stationary for 2 seconds, eliminating the need for manual clicks.
File sharing capabilities have been enhanced, allowing files to be downloaded via QR code scanning on handheld collectors or other devices. One-click transfers between collectors, smartphones, and PCs enable cross-platform collaboration and rapid sharing.
The software also now includes RTK PPP Fusion, which seamlessly switches to PPP solutions when RTK signals drop. This maintains operational continuity with PPP accuracy up to 20 cm. It supports echo sounders for precise depth data and WMS services for synchronized, customizable map data.
ComNav Technology has introduced the Jupiter Laser RTK, which is designed for surveying and stakeout operations. The system offers a range of up to 50 m with centimeter-level accuracy and eliminates the need for traditional poles for efficient performance in routine and complex environments.
Equipped with a global night vision camera and laser technology, the Jupiter Laser RTK maintains high efficiency even in low-light or nighttime conditions. Its laser remains visible in the dark, enhancing usability during survey and stakeout tasks. The system also features visualized capabilities through a handheld data collector with an intuitive interface. Users can easily view point positions and follow directional arrows and real-time distances via Survey Master software’s 3D visual interface to accurately mark stakeout points.
The dual-camera system further enhances precision by guiding stakeout paths with a front camera for long-distance views and switching to a bottom camera for close-range detail. A flashing laser replaces traditional walkie-talkies near stakeout points, while visualization compensates for the laser’s invisibility in bright light or over long distances. These features improve efficiency by up to 30%.
Jupiter Laser RTK incorporates cutting-edge technologies such as the K8 board, which tracks up to 1,668 channels across all satellite constellations for reliable positioning. Its Super Datalink supports a 15 km working range and full-protocol compatibility, while Auto IMU provides tilt compensation up to 120° without manual initialization. Designed for durability, the system is waterproof, drop-resistant, and equipped with long battery life, ensuring reliable performance in diverse environments.
Machine control systems, which combine positioning sensors — both GNSS receivers and inertial systems — with computer displays, give operators better insight into and control over their work. Whether moving dirt on a construction site, spraying crops on a large farm, or moving cargo containers in a port, machine control increases efficiency and precision while decreasing accidents and fuel consumption.
Machine control systems enable operators to accurately position buckets, blades and other implements on their machines without having to first survey and stake the work site, or having to constantly check their work. They give operators a clear reference between the position of the machine bucket or blade and the design surface, thereby increasing their productivity and accuracy. They also utilize labor and equipment efficiently to reduce costs and minimize wear-and-tear. Finally, by collecting data during their operations, they help teams communicate better and share models.
Machine control, which first began to be implemented in the 1990s, is being increasingly adopted across a variety of different types of construction equipment — including graders, dozers, and, more recently, excavators. Now, beyond simply providing operators with a visual guide to the position of their buckets or blades, automated machine control moves the blade to grade by talking directly to the machine’s hydraulics, enabling new or less-skilled operators to perform like long-time professionals and increasing the speed and precision of even the most experienced operators.
The three case studies in this cover story highlight the need for precision control of the implements on earth-moving machines, the importance of good data and the need to make the process as easy as possible for the operator.
The Maldives consists of numerous coral reef islands with low soil-bearing capacity. Using heavy machinery in such an environment requires careful management of movement and precise operations while avoiding damage to local coral reef ecosystems, thus preserving marine life and the natural landscape of the islands.
using heavy machinery among sensitive coral reefs requires careful movement and precise operations to avoid damaging them. Photo: ComNav
As an advanced construction solution, ComNav Technology’s XE100 Guidance System for Excavator employs high-precision GNSS positioning and heading technology coupled with inertial sensors. In construction projects in the Maldives, the XE100 not only provides precise guidance for operators on land but also enables efficient and precise underwater operations in complex marine environments while minimizing ecological impact. Its excellent performance has brought significant benefits to construction projects in the Maldives.
The Maldives’ construction environment is complex and variable, requiring precise equipment to adapt to diverse terrain. The XE100 supports multi-constellation multi-frequency GNSS, delivering centimeter-level accuracy. This ensures that, whether for leveling, slope cutting, or digging, the system delivers precise instructions for bucket operations and guarantees accurate excavator positioning, even in challenging conditions.
ComNav technology’s Xe100 GNSS machine control system delivers centimeter-level accuracy in complex and variable environments. Photo: ComNav
For scenarios requiring underwater operations or mixed land and water tasks, the XE100 overcomes the traditional challenge of locating exact coordinates. The GNSS tablet’s intuitive display of coordinate points helps operators identify work areas and select appropriate excavation actions. This ensures safety, reduces technical barriers, minimizes the need for rework, and significantly enhances construction quality while maintaining high efficiency and precision.
Construction projects in the Maldives often face challenges such as high humidity, high salinity and frequent vibrations. Each component of the XE100 is designed to withstand harsh environments with excellent durability. The system’s modular design also supports expansion to other construction machinery, enhancing flexibility and paving the way for future technological upgrades.
As a nation abundant in marine resources and dependent on tourism, ongoing infrastructure development and maintenance are critical to the Maldives’ economy. The XE100 system improves construction accuracy, reduces operation time, ensures safety, and lowers costs, thereby accelerating project timelines.
Machine control and automation for snow management
The allure of pristine slopes and perfectly crafted terrain parks has always drawn adventurers to the mountains, but the landscape of snow management is shifting dramatically. With rising temperatures and unpredictable weather patterns, climate change poses a significant challenge to the snow sports industry. Natural snowfall is becoming less reliable, leaving resorts dependent on costly snowmaking systems that strain resources and budgets.
Leica Alpine Office enables resorts to achieve operational goals while safeguarding the environment by precisely managing snow management and reducing waste. Photo: Leica Geosystems
For snowparks, these challenges are even more acute. Crafting intricate features such as halfpipes, jumps and rails requires precision and significant amounts of snow — an increasingly scarce resource. Amid these difficulties, the need for sustainability has never been more pressing.
The tech that’s changing the game
Leica Geosystems’ snow management solution, the Leica iCON alpine, paired with Prinoth snow groomers, is helping resorts get more out of less, making the construction of snowparks more efficient and sustainable.
The Leica iCON alpine system leverages GNSS and advanced inclination sensors and inertial measurement units (IMUs) to measure and manage snow depth accurately. Mounted on any snow groomer, this system continuously collects data, ensuring that operators can see the exact snow depth beneath the blade and tracks — accurate to within ±3 cm. In other words, it’s like X-ray vision for your snowcat.
The Leica Icon Alpine, paired with Prinoth snow groomers, is helping to make the construction of snowparks more efficient and sustainable. Photo: Leica Geosystems
Need a perfect jump? Create a 3D model and import the data, which can be read on the screen inside the groomer’s cab. It even handles tricky terrain with features like avoidance zones and anchor point searches. This setup doesn’t just make slopes look good; it helps operators work smarter, not harder.
Snow measurement for World Cup Slalom course
For the past two years, Killington Mountain Resort in Vermont has been utilizing the Prinoth Connect Snow Measurement system powered by the Leica MC1 software.
Killington is one of the first resorts in North America to invest in snow measurement, and it has been vital to executing the Women’s Slalom and Giant Slalom World Cup builds in 2023 and 2024. Killington has the snowmaking capability to cover the race trail, Superstar, with snow in about 100 hours. With the software, the teams can read the snow depth to +/- 3 cm, using snow measurement sensors instead of long metal probes. The software helps increase the efficiency of both snowmaking and grooming, making the build easier for the grooming operators, more straightforward for officials, and safer for the racers.
Leica’s machine control solution has been vital to precisely executing the Women’s Slalom and Giant Slalom World Cup builds. Photo: Leica Geosystems
From the snow to the dirt
However, Leica Geosystems machine control technology is a year-round solution thanks to its versatile Leica MC1 platform, which allows the same hardware used for snow grooming to seamlessly transition into off-season applications such as summer earthworks, trail construction and road maintenance. With a single investment, resorts get a multipurpose tool that eliminates the need for separate systems, cutting costs and complexity.
For instance, in the summer months at the Rieberalp in Davos Rinerhorn, the Leica MC1 solution powers excavation work for projects such as creating a reservoir and ensuring precise and efficient earthmoving. In the winter, the same system transitions to snow groomers, optimizing snow management on the slopes. This effortless switch between applications highlights the adaptability and value of the Leica MC1 platform, enabling ski resorts to get the maximum out of their investment while maintaining top performance year-round.
Technology for more sustainable snowparks
With precision snow management and reduced waste, resorts can achieve operational goals while safeguarding the environment. Adopting digital solutions such as these ensures that ski resorts and snowparks can continue to deliver world-class experiences for generations to come.
Te Ara Tupua is an initiative by the New Zealand Transport Agency aimed at enhancing transport resilience while establishing a walking and cycling route between Wellington and Lower Hutt. The Te Ara Tupua Alliance includes the NZ Transport Agency and its design and construction partners: Downer NZ, HEB Construction and Tonkin + Taylor. To execute this project, the NZ Transport Agency is collaborating with Taranaki Whānui ki te Upoko o te Ika and Ngāti Toa Rangatira as iwi mana whenua. This collaboration inspired the name Te Ara Tupua, referencing the Māori creation story in which Ngake and Whātaitai, two tupua (ancient beings), formed Te Whanganui-a-Tara (Wellington harbor).
The Ngā Ūranga ki Pito-One section of Te Ara Tupua will be built on the harbor’s edge, from Ngā Ūranga Interchange to Honiara Te Puni Reserve in Pito-One and connect with the new Pito-One to Melling section. The project will deliver a new resilient coastal edge protecting the road and rail while providing transport options and a safe route for walking and cycling between the two cities.
The solutions involved include:
Trimble Marine Construction System
Trimble SketchUp
Trimble Stratus Software
The benefits of the project include:
Reduced project timeline.
Improved safety for construction crews and the public.
Increased productivity.
Higher precision placement of embankment blocks.
Reduced environmental impact.
Real-time progress visibility for stakeholders.
Te Ara Tupua will deliver a new resilient coastal edge protecting the road and rail while providing new and safer transport options. Photo: Trimble
Te Ara Tupua is currently under construction along the western coastline of Te Whanganui-a-Tara with the aim of being completed in 2026. The Pito-One to Melling section of Te Ara Tupua is the first completed section of the project and was delivered by the contractors, Fulton Hogan.
The Pito-One to Melling section is a 3 km separated cycling route stretching from Pito-One to the Hutt River Trail near Bridge Street. The new path eventually will join the Ngā Ūranga to Pito-One section of Te Ara Tupua, which connects to the Hutt Road and Thorndon Quay.
The construction of Ngā Ūranga to Pito-One section of Te Ara Tupua includes a 4.5 km shared path, shared path bridge, rock revetments, seawalls and landings. To protect the shared path, road and rail line against wave action, erosion and sea-level rise, an essential part of the new pathway is the construction of embankments (or revetments).
Underwater resilience
Te Ara Tupua is the first project where seismic performance has been considered and tested in the design elements, including the new seawall built over a large active faultline.
Two main types of material are required for this project. Rock is being used for the revetment (the sloping rock seawall), which will protect the reclamation and the path from the sea while the remaining material is general fill. These are being sourced in Taranaki and Golden Bay with rock from Golden Bay being transported by barge, greatly reducing the number of truck movements.
XBlocPlus units are a unique cost-effective solution for Te Ara Tupua. These blocks are poured in the shape of an ‘X,’ which interlock and stack on top of each other to create a seawall with a steeper incline.
Using these interlocking concrete blocks reduces the seawall’s physical footprint and impact on the marine environment, enabling the project to use less material at a lower cost compared to a rock revetment.
Through this innovation, the project team of engineers and ecologists (Te Ātiawa, Ngāti Maniapoto, Ngāti Tūwharetoa and Ngāti Apa) worked alongside lead cultural designer, Len Hetet to combine cultural and environmental design, which resulted in Te Ripowai, the unique Te Ara Tupua ecological XblocPlus unit. Te Ripowai speaks of the rippling water and connects to a Te Ātiawa whakatauki of guardianship. The guardians must keep the ripples occurring, else water becomes still and life will cease to exist. Te Riopowai includes surface patterns and textures to encourage growth of marine plants.
The Ngā Ūranga to Pito-One pathway shoreline ultimately will have 6,663 of these blocks of varying shapes.
operators of excavators with grapple attachments needed to move eight different block shapes into place with an 80 mm tolerance. Photo: Trimble
Block placement
Placing these blocks with precision and speed initially created some concern for the project team. Operators in excavators equipped with grapple attachments needed to move the units into place, initially about 4 m underwater, to a tolerance of about 80 mm to assure embankment strength. To further complicate the construction, there are eight different block shapes.
It’s a task purpose-built for real-time digital twins and machine guidance, according to the Alliance. With help from SITECH, the survey team looked to its digital assets.
First, Jan du Preez, survey manager with the Te Ara Tupua Alliance, relied on Trimble SketchUp to accurately model the individual blocks. Then, the team combined the Trimble Marine Construction (TMC) System with a digital model of the excavator. Laser scans along the shoreline provided a digital record of the existing conditions. Even the sequential placement of the blocks is planned in the digital space.
On the job, an operator selects a designated block for placement on the screen, then uses the excavator grapple attachment to pick it up. TMC provides real-time feedback on the block’s position, rotation and tilt as the operator navigates to the appropriate position, even underwater.
Du Preez added, “With TMC, the operators can ‘see’ where they are placing them under the water. Because they’re working in an active tidal area with most of the blocks sitting underwater, the idea was to make the process as easy as possible for the operator with highly visual markers on the screen. Every step is color coded, which allows operators to just focus on the colors, rather than trying to see underwater with the naked eye.”
As the block is placed within the 80 mm tolerance required to interlock with the blocks above, the operator records the as-built position, and the screen shows green. The operator then releases the grapple and moves on to the next block.
When asked about efficiency, du Preez noted, “The initial program specified placing 15 blocks per day. We are currently placing between 35 to 45 blocks per day depending on site conditions. We estimate that we’re seeing about three times the productivity compared with more conventional methodology — though I’m still not sure how we would have done this without TMC. We would have had to come up with some kind of visual marker and then perform quality checks with divers. It would have been time consuming and very costly.”
Shared progress
The benefits of the digital workflows to stakeholders, according to du Preez, are many, with transparency being the overarching benefit.
Unlike a traditional contract where owner and project team are separate, in an alliance model the client is an integral part of the team. That said, while NZ Transport Agency, Waka Kotahi, et al., are involved in the everyday running of the project as part of the alliance, they also have a board. “Every time the Alliance board of directors sees our solution, they are completely blown away by what we’ve been doing and how we’re doing it,” du Preez said. They particularly like the regular drone flights that capture progress updates.
“All survey data, models and regular flight imagery are loaded and stored in Trimble Stratus for sharing so that stakeholders always see the latest project status. The entire Alliance really appreciates this level of real-time digital visibility into the project.”
Ngā Ūranga ki Pito-One is on track for completion in 2026. When complete, the Te Ara Tupua will deliver a safe, connected and resilient route, enabling more people to walk or bike, and connect with local paths in both Wellington and the Hutt Valley.
ComNav Technology has introduced the AG501 Pro autosteer system, an advanced solution for precision agriculture. This system offers improved accuracy and efficiency for various farming operations. The AG501 Pro features a streamlined design, incorporating the A100 Pro Smart Antenna, which integrates a GNSS antenna, GNSS module, gyroscope and datalink functionalities into a single unit.
The system utilizes ComNav’s high-performance GNSS module, which supports full-constellation tracking. By employing GNSS+INS terrain compensation technology, the AG501 Pro can achieve a pass-to-pass accuracy of 2.5 cm across diverse terrains, minimizing skips and overlaps.
It also includes free signal options, such as Galileo-HAS and Beidou-B2B services, allowing 5 cm to 10 cm accuracy without the need for mobile RTK base stations or RTK service subscriptions. This is particularly beneficial in areas with poor internet connectivity.
The AG501 Pro offers a variety of guideline options, including parallel straight lines, curves, A+ Heading and automatic U-turns, catering to different farming procedures. It operates within a speed range of 0.1 to 20 km/h and is compatible with major brands and various machine types, including tractors, sprayers and combine harvesters. The system’s user-friendly software interface seeks to simplify configuration and task management. It allows for quick AB line setting and easy engagement of the autosteer function. Additionally, the AG501 Pro software supports multiple languages, making it accessible to farmers worldwide.
All construction work begins with surveying to map the site and generally ends with surveying to document what was done on it — called “as built.” Therefore, surveyors are the first to arrive at a construction site, well before the first heavy machinery, and the last ones to leave, well after the construction crews have left with their equipment. During construction, surveyors get to work any time there are changes in the plans.
Surveyors are not the only ones to use survey-grade GNSS receivers on a construction site, though. GNSS for machine control is increasingly common on excavators, graders, dozers and other heavy machinery. It enables operators to achieve accurate earthmoving and grading operations with minimal manual intervention, significantly improving efficiency and reducing rework by providing real-time positioning data based on 3D design models. Additionally, a dedicated display in the cab allows operators to see a visual representation of the machine’s position relative to the design model and to make adjustments in real-time.
This month’s cover story features case studies from four companies:
CHC Navigation (CHCNAV) on grading for an airport construction project in Shanghai, China.
ComNav Technology on a river flow monitoring system to mitigate the effects of flooding in Japan.
Nearmap on solving the stormwater challenges of a small town in Michigan.
Frontier Precision on the repair of a canal in Montana in very challenging conditions.
Construction of a building cannot begin until the ground is level and matches the design so that it can bear the weight of the planned structure. At times, part of the ground needs to be sloped to ensure proper drainage or to meet the aesthetic needs of the project. However, the ground at a construction site is often uneven and/or sloped the wrong way. Therefore, a critical phase of any AEC project is grading, which is a specialized phase of the construction process that uses machinery such as graders, bulldozers, excavators, and dump trucks to move and shape large amounts of earth.
Traditionally, grading involved the use of string lines and optical levels, which are still valuable for smaller projects. These tools provide a visual reference for achieving the desired slope and allow for manual adjustments as needed. Modern construction practices rely on laser levels — which provide accurate measurements, ensuring a consistent slope — and, increasingly, on GNSS receivers, which aid in precise grading, especially in large-scale projects.
In a recent project to build an apron — a paved area where aircraft are parked, loaded, unloaded, refueled and boarded, also known as the ramp, flight line or tarmac — as part of the expansion of Shanghai Pudong International Airport, the construction company adopted CHCNAV’s i93 GNSS receiver solution. The project, by a large state-owned construction company, began at the end of July 2024 and is expected to take two years to complete. By directly loading the designed triangulated terrain model (TTM) for surface stakeout, the project managers were able to visualize the cut-and-fill values at any location in real time. This approach doubled the stakeout efficiency and significantly improved the quality of site grading.
Project challenges and solution
The airport project covered approximately 360,000 m², demanding high-precision grading. Traditional surveying methods could only verify cut-and-fill heights at grid nodes, failing to effectively cover areas between these nodes. This limitation increased the risk of uneven construction and restricted the comprehensiveness of elevation data. Additionally, the traditional stakeout process was cumbersome and inefficient, requiring point selection before stakeout. To overcome these challenges, the construction team needed a surveying solution that could significantly enhance stakeout efficiency while improving grading precision and construction outcomes.
The construction team used the CHCNAV i93 GNSS receiver and LandStar field survey APP. By using the surface stakeout function for site grading, it was able to load the TTM generated from design data directly into the LandStar software, simplifying the grading process. The software enabled surveyors to obtain cut-and-fill values at any location in real time, thereby eliminating reliance on grid nodes and enabling dynamic verification across the entire site for higher grading precision. Lastly, the solution doubled the stakeout efficiency by reducing the steps of selecting feature points before stakeout.
Using CHCNAV’s Satellite Wide Area System (SWAS) corrections network, a global system that offers users fast and precise centimeter-level positioning services, the surveyor was able to achieve an elevation accuracy of -3 cm ~ +2 cm. SWAS covers most of the inhabited areas in China and is expanding its network globally. CHCNav’s satellite Precise Point Positioning service is being developed and tested; it will become part of the SWAS service in the future. The surveyor guides the site grading by comparing the difference between the elevation in the design plans and the measured elevation. Therefore, when the site grading is complete, it should match the design plans.
Conclusions
“The project involves large areas of earth excavation and levelling,” said Yang, the chief of the survey team. “In the past, we had to stake out all the points of the grid after getting the design drawings, and then calculate the elevation difference of each point. If there were some special points, we also had to calculate their positions in the grid. Now, in LandStar 8, we can directly convert the grid drawing into a TTM file and stakeout, which makes it easy for us to set the elevation difference at any point without the limitation of the grid. This increased efficiency accelerated the progress of the project and reduced our workload.”
The adoption of CHCNAV’s surveying and construction solution significantly accelerated the project’s site grading work. This task, which traditionally would have taken about one month to complete, was fully accomplished in just half a month. During the project acceptance phase, the results met all design requirements and passed inspection smoothly. The construction unit reported that the CHCNAV i93 GNSS receiver and LandStar field survey APP greatly enhanced the efficiency and accuracy of the site grading portion of the construction project.
It is essential to take effective measures to mitigate the effects of natural disasters — such as earthquakes or hurricanes — and to prevent them when possible, such as sometimes with floods. This involves multiple aspects, including the development and rehearsal of emergency plans, the construction and reinforcement of infrastructure, and the monitoring of environmental changes. By identifying potential disaster risks and taking preventive actions, the damage caused by these disasters can be significantly reduced and the resilience of communities and cities can be enhanced, thus better preparing for future catastrophes.
How can these disaster mitigation and prevention measures be specifically implemented? First, by creating detailed emergency plans and conducting regular drills, which ensures a quick and effective response during critical situations. Second, by reinforcing critical infrastructure, such as protective embankments and resilient systems, which strengthens the overall preparedness of both urban and rural areas. Moreover, monitoring environmental changes plays a pivotal role in prevention efforts. Real-time observation systems, including advanced sensors and data integration platforms, enable the early detection of potential risks. This facilitates timely preventive actions, minimizing losses with optimal efficiency and resource utilization.
Mars Pro Laser RTK was used to precisely measure the positions of monitoring cameras in the Abukuma River basin.(Photo: Geosurf Corporation)
Monitoring systems
A key aspect of flood defense and disaster prevention is the establishment of monitoring systems and the enhancement of safety measures. In the Abukuma River basin, which flows through Fukushima and Miyagi prefectures in Japan, a flood monitoring system has been built that combines data from water level meters with real-time information on changes in water levels due to natural events such as typhoons. This provides residents with immediate visual updates to help them respond effectively.
ComNav Technology’s Mars Pro Laser RTK has played an important role in this flood prevention and disaster monitoring project. By using the device, which integrates advanced GNSS, IMU, and laser technologies, a team from Geosurf Corporation was able to accurately determine the locations for installing surveillance cameras, ensuring real-time monitoring of water flow conditions, and providing early warnings for natural disasters such as floods. The locations of these cameras typically include areas with a high risk of riverbank collapse, water level observation stations, and other critical spots that require close monitoring.
In the past, this task would have required using a total station. However, using Mars Pro’s very precise green laser, the crews were able to measure the locations of offset points that did not have a clear view of the sky, which is required to receive GNSS signals.
Centimeter-level accuracy
The green laser, which is visible in daylight, enabled the crews to achieve centimeter-level accuracy at any point within a range of 10 meters. They were also able to use its 120-degree tilt compensation feature to drive the stakes efficiently closer to the target point without worrying about leveling. During the RTK positioning process, the team used reliable correction information sources and precise post-processing analysis methods, ensuring that the measurement point consistency was maintained within 2 cm to 3 cm, thus ensuring high accuracy and consistency of the measurement results.
Positioning surveillance cameras in the Abukuma River basin required measuring not only their placements but also the reference points within their coverage areas. Beyond its convenience and reliability, the Mars Pro Laser RTK and its paired software, Survey Master, simplified the survey workflow by using wizard functions. Specifically, the procedure is to follow the instructions of the surveillance camera monitor to move onto the centerline and use the program’s Angle Offset Calculator to calculate the coordinates of a reference point at ±90 degrees to the line segment. Survey Master’s simple survey calculation tool eliminates the need to launch a CAD program in the field, making the staking more efficient.
For the correction information in RTK positioning, Geosurf Corporation used ichimil, a high-precision positioning service provided by Softbank. Geosurf also acquired raw data for post-processing at several locations at the same time and analyzed the measurement points using coordinate results from Japan’s Geospatial Information Authority.
The surveyor used Mars Pro Laser RTK and Survey Master software to measure the reference points within coverage areas of surveillance cameras. (Photo: Geosurf Corporation)
Conclusions
The monitoring system combines water level data collected from devices such as water level meters with changes in water levels caused by natural events such as typhoons, providing real-time visual information to residents. This allows them to stay informed about current water levels, identify potential flood risks early, and take appropriate preventive measures, effectively reducing disaster risks and safeguarding lives and property. More than 100 surveillance cameras have been installed so far in the Abukuma River and its associated watershed.
Through this project, Mars Pro Laser RTK not only enhanced emergency response capabilities but also showcased the versatility of laser RTK technology in disaster prevention and mitigation applications. Climate change is increasing the damage caused by typhoons and torrential rains worldwide. As a result, the demand for such monitoring systems is expected to grow. ComNav Technology plans to further improve user experience by integrating laser technology with additional sensors and developing more innovative tools to address future disaster prevention needs.
While surveyors are typically the first to begin working on a construction site, but they do not start completely from scratch. As a basemap for their measurements, they often use satellite and aerial imagery, the latter collected by planes and UAVs — the same imagery used in geographic information systems (GIS) by governments at every level and private companies to plan, build, and manage buildings and infrastructure. These data include high-resolution orthimages, which are taken pointing straight down at the ground and adjusted to have a constant scale of distance across them; oblique images, which can offer an alternative view of the landscape and structures where height is important; 3D datasets, including digital elevation models and models of buildings, collected using lidar; and AI-derived spatial information.
Additionally, historical imagery datasets document the evolution of land use over time and make it possible to compare conditions before and after natural disasters, such as floods and earthquakes, to expedite emergency response and reconstruction planning.
An aerial image of southfield, Michigan, from Nearmap’s natural pervious surface AI data layer. (Photo: Nearmap)
Stormwater utilities project
With a diverse population, more than 10,000 businesses, and a commitment to urban development, the City of Southfield, Michigan is known for its robust economy, thriving commercial centers, modern urban living and innovation. When it needed help to effectively manage its stormwater utilities, the city hired OHM Advisors. Founded in 1962 and with a multidisciplinary team of more than 700 experts, the firm provides consulting in the areas of architecture, engineering, planning, urban design, landscape architecture, surveying, and construction engineering. In turn, for this project, OHM Advisors used location intelligence from Nearmap, an aerial imagery company founded in 2007 that captures urban areas across the United States, Canada, Australia and New Zealand.
Initially, the city planned to have access to the Nearmap imagery for only a year, for use in its stormwater utilities project. However, once it realized how useful it would be across city departments and projects, it decided to continue buying it for the long term.
Aerial imagery
The City of Southfield is currently in the planning stages of considering a new initiative to assess stormwater fees based on the number of impervious surfaces — such as asphalt and concrete — which do not allow water to penetrate the ground, thereby contributing to increased runoff and straining municipal systems. However, the city is challenged by its limited budget for maintaining, let alone upgrading, its stormwater infrastructure. Additionally, the aerial imagery it had was old and one-time flyovers of the small city to update the imagery would have been prohibitively expensive, costing up $100,000.
By purchasing high-resolution aerial imagery (captured up to three times a year), geospatial data, and AI feature layers from Nearmap, as recommended by OHM, the city was able to efficiently map impervious surfaces and readily view, identify, and verify stormwater utilities at scale. This enabled the city to develop a highly accurate and equitable system for assessing fees based on near-real-time data. It also improved the precision and efficiency of its urban planning; enabled city planners to complete tasks remotely, spending less time in the field; and updated the imagery in its GIS.
Business impact
Using current aerial imagery, geospatial data, and AI data, Nearmap and OHM identified every impervious surface in the city, enabling Southfield to:
Accurately assess stormwater fees. Analysis of Nearmap imagery and AI data allowed OHM to tie impervious surface area to stormwater fees and establish a precise, data-backed fee structure that bolsters the city’s infrastructure funding.
Reduce costs. Nearmap offered a cost-effective alternative to traditional data collection, drastically reducing the city’s expenditure without sacrificing data quality.
Enhance urban planning. Access to Nearmap facilitated remote decision-making, allowing Southfield to optimize its urban planning.
Maintain consistent data. OHM and Nearmap led to the resolution of Southfield’s data discrepancies, ensuring reliable insights for future planning.
Conclusions
“Using the high-quality Nearmap AI data allowed the OHM Advisors’ GIS team to efficiently and effectively map out the impervious surfaces for the city,” said Mike Cousins, GISP, practice leader for GIS at OHM Advisors. “Having high-resolution and very recent imagery to pair with the impervious surface data helped with the analysis portion of the project at hand.” The collaboration between OHM Advisors and Nearmap marked a significant change in Southfield’s approach to stormwater management, illustrating the potential of advanced technology to improve urban governance.
The St. Mary Canal and siphon were completed in 1915 as part of the Milk River Project in North-Central Montana. The canal has delivered water to 110,000 acres of agricultural land in eastern Montana for 109 years. In June 2024, the siphon had a catastrophic blowout when both 90-inch siphon pipes failed, releasing 600 ft³ of water per second for more than 24 hours.
The stakeholders involved quickly went to work on a solution to replace the two siphon pipes. By mid-July, NW Construction, Inc. was brought on site to begin demoing and replacing the siphon. The company uses Frontier Precision as its supplier for all its surveying equipment. Utilizing a mix of GPS machine control, geospatial survey equipment, aerial drone surveys and CAD software, NW Construction will work through the blistering Northern Montana winter to restore the siphon in time for the 2025 irrigation season.
The harsh environment and speed of the project pose tough conditions for surveying. Winds regularly reach 60 mph with gusts up to 80 mph and temperatures go well below freezing for most of the winter. The surveyors on this project will have to overcome the challenges that come with this weather and the remoteness of the project.
The project has about six excavators, including two with tilt rotators, and four dozers, all equipped with GNSS machine control. “Everything we do is completely modeled for those guys through civil 3D and Trimble Business Center,” said Kenny Neskorik, project engineer for Northwest Construction. The GNSS receivers on the earth movers are running RTK as rovers and there is a single base receiver. “When we do any sort of concrete work for this project, we will also set up a robotic total station,” he said.
Additionally, the project uses a DJI Mavic UAV to collect aerial photogrammetry of such things as finished excavation and original ground stockpiles.
Requirements
The requirements for this project are atypical, Neskorik explained, due to its emergency nature. “The design and the construction are going on at the same time through two different entities,” he said. “My company is not the engineering firm stamping the plans. We’re the ones doing the work. I
could almost describe it as a design build, in which the contractor and the engineer meet in the middle to get the best product in the fastest way.”
The project’s biggest requirement is to get water back to the eastern part of the state by summer, when it will be needed to irrigate crops. “To do that,” Neskorik said, “we had to set control.” Because the project is only a few miles from the Canadian border, however, the power of radio broadcasts is restricted to only 2 Watts instead of the usual 35 Watts on RTK radios. “That really hurts your range to talk to your base,” he said. This required setting up several relay repeaters, especially since there’s almost no cell phone service in Montana
Challenges
An additional challenge is the solar cycle, which is nearing its peak. “We have noticed lots of Northern Lights, lots of auroras,” said Neskorik, “but we haven’t seen too many disruptions yet.”
Finally, the biggest challenge is the weather. “We’ve already had probably cumulatively two feet of snowfall,” said Neskorik. “Thankfully, some of that has already melted, but this area is one of the colder parts in the United States.” Browning, he pointed out, is just 30 minutes south of us, holds the world record for fastest temperature change in 24 hours — from 56 degrees Fahrenheit to negative 46 degrees. It’s not uncommon to see negative 50 degrees. “At that temperature, your batteries die really fast, you cannot use touch screens, and you have to drill to set stakes in the frozen ground is frozen. We’ve already experienced winds at nearly 80 miles an hour and that is pretty much how it goes for the entire winter. So, as you can imagine, it’s not an easy task flying a drone around here.”
Accuracy
“Our company standard for any excavator or dozer is an accuracy of one tenth of a foot,” said Neskorik. “We want our GPS rovers to have a vertical tolerance below 5/100s of a foot. Realistically, you’re probably getting a 1/10 of a foot. You cannot have any major fluctuations in the dirt because the pipe sits directly on it.” This all must happen in real time because there is no post-processing. “Everything is modeled and the machines are running on a model. We’re checking their grades as they’re doing the work.”
