Geosun GS 130G 300m Handheld SLAM LiDAR Scanner

Professional SLAM LiDAR for indoor and outdoor 3D mapping

The Geosun GS-130G is a compact professional LiDAR scanning system developed for surveyors, engineers, construction teams, mining professionals, GIS users and reality-capture specialists who need to collect dense 3D data quickly. It combines a 32-channel laser scanner, GNSS positioning, an inertial navigation system, SLAM algorithms and high-resolution cameras in one integrated unit.

The GS-130G is designed to work across different environments rather than being restricted to conventional outdoor GNSS surveying. It can continue mapping indoors, underground, between buildings and in other areas where satellite reception becomes unreliable, while GNSS and RTK or PPK positioning can be used when suitable satellite coverage is available.

Up to 300 metre LiDAR range

A key advantage of the GS-130G is its maximum measuring range of up to 300 m. The manufacturer specifies approximately 80 m range on targets with 10% reflectivity, with the maximum distance achievable on more favourable reflective surfaces.

For field crews, the extended range is useful in larger environments such as mines, industrial halls, façades, tunnels, slopes and outdoor terrain. The operator does not need to move close to every surface to collect useful geometric information. As with any LiDAR system, practical range depends on target reflectivity, angle, environmental conditions and the required point density.

32-channel LiDAR with up to 1.92 million points per second

The GS-130G uses a 32-channel LiDAR sensor capable of recording up to 1,920,000 points per second in triple-return mode. The high point rate allows the scanner to capture dense information while the operator or platform is moving.

This is useful when recording detailed terrain, façades, structural elements, tunnel profiles, stockpiles, vegetation and industrial environments. A high acquisition rate also reduces the need to move extremely slowly through every part of the project just to achieve useful point coverage.

Triple returns for vegetation and complex objects

The scanner supports triple laser echoes. A single laser pulse can therefore provide information from several surfaces along its path. In vegetation, for example, returns may originate from the canopy, lower branches and surfaces below.

For forestry, terrain work and infrastructure surveys, multiple returns provide additional information that can help separate different height levels within the point cloud. The ability to reach the ground through vegetation still depends on canopy density and whether openings are available for the laser pulses.

SLAM mapping without continuous GNSS

The GS-130G uses SLAM technology to calculate its movement while simultaneously building a map of the surrounding environment. Rather than depending entirely on satellites, the system compares geometric features between successive scans to estimate how the scanner has moved.

This makes it suitable for tunnels, underground spaces, buildings, industrial facilities and other GNSS-denied locations. A surveyor can walk through a site while the system continuously records the surrounding geometry instead of stopping at numerous individual tripod positions.

SLAM RTK-SLAM and PPK-SLAM

The GS-130G supports SLAM, RTK-SLAM and PPK-SLAM workflows. Standard SLAM can be used where no useful satellite signal is available. RTK-SLAM adds real-time GNSS positioning where corrections and satellite reception are available, while PPK-SLAM allows positioning information to be processed afterwards.

This flexibility is especially useful on projects that move between open and enclosed areas. A survey may begin outdoors with GNSS positioning, continue inside a structure using SLAM and return outdoors without requiring a completely separate scanning system.

Integrated gSpin 210 GNSS and INS

The GS-130G incorporates Geosun’s gSpin 210 GNSS/INS positioning system with a 200 Hz update frequency. The GNSS unit supports GPS, GLONASS, Galileo and BeiDou satellite signals.

The published positioning specifications include approximately 2 cm horizontal and 3 cm vertical positioning accuracy under suitable GNSS conditions, together with 0.015° pitch and roll accuracy and 0.040° heading accuracy.

For georeferenced projects, this information helps connect the locally generated SLAM point cloud to the required coordinate system and improves continuity when working between indoor and outdoor areas.

Up to 5 cm point-cloud accuracy

The GS-130G is specified with point-cloud accuracy of up to 5 cm. Geosun also publishes an example of approximately 5 cm point-cloud accuracy at 100 m without control points.

This makes the system suitable for many surveying, mapping, documentation, volume and inspection tasks where rapid collection of a complete 3D environment is more important than millimetre-level static metrology. For work with strict engineering tolerances, control points and independent checks should still be used where required.

Wide 360 by 270 degree field of view

The scanner provides approximately 360° horizontal and 270° vertical coverage. This wide viewing geometry allows the GS-130G to record most of the environment surrounding the sensor while moving.

For building surveys this means walls, floors, ceilings and structural features can be captured together. In tunnels, mines and narrow corridors, surfaces around the operator can be collected without constantly changing the orientation of the scanner.

Dual 20 MP cameras for visual context

The GS-130G includes two 20 MP RGB cameras with wide image coverage. Camera data can be combined with the LiDAR measurements to create colourised point clouds and provide additional visual context for the captured geometry.

This makes it easier to recognise materials, signs, pipes, road markings, building features and other objects that can be difficult to distinguish in an uncoloured point cloud.

Handheld surveying and building documentation

In handheld mode, the GS-130G provides a fast way to capture existing conditions. Surveyors and construction professionals can walk through buildings, industrial sites and outdoor areas while recording complete surfaces rather than only selected points.

The resulting point cloud can support renovation work, building documentation, CAD or BIM workflows, dimensional analysis and site records. Because the complete surrounding geometry is captured, users can often return to the dataset later to inspect or measure features that were not the main focus during the original field visit.

Mining tunnels and underground surveying

Mining and underground environments are strong applications for SLAM because GNSS signals are generally unavailable. The GS-130G can be carried through mine workings, shafts, tunnels and underground infrastructure while its SLAM system maintains the local survey trajectory.

Geosun has demonstrated the GS-130G in demanding underground projects, including deep vertical-shaft mapping. The combination of long LiDAR range, wide field of view and GNSS-independent SLAM makes the system useful where conventional satellite-based surveying cannot operate continuously.

Façade and vertical-structure surveys

The 300 m maximum range and wide scanning geometry also make the GS-130G useful for façade and vertical-structure mapping. Buildings, retaining walls, towers and industrial structures can be documented from the ground while maintaining a practical distance from the object.

This can support architectural documentation, condition surveys, digital twins and 3D modelling where a complete representation of vertical surfaces is required.

Stockpiles earthworks and volume measurement

For mines, quarries and construction projects, the GS-130G can be used to capture stockpiles, excavations and changing terrain. Dense 3D surfaces can then be processed in compatible software for volume calculations and comparison between different survey dates.

Mobile SLAM collection can be particularly useful where frequent surveys are required and setting up a conventional static scanner at numerous locations would take unnecessary field time.

Multi-platform operation

One of the more flexible aspects of the GS-130G is its support for multiple operating platforms. Geosun lists handheld, backpack, UAV and vehicle configurations for the current system.

This means the same core sensor technology can be applied to pedestrian mapping, airborne surveys and mobile-mapping projects depending on the mounting hardware and project configuration. A survey company can therefore use the GS-130G for more than one type of reality-capture workflow.

Lightweight design for field crews

The current GS-130G weighs approximately 1.7 kg, including its battery in the published handheld configuration. This relatively low weight makes it easier to carry during longer surveys and also helps when integrating the system with UAVs or other mobile platforms.

The system provides approximately two hours of operating time, depending on configuration and operating conditions, and supports expanded microSD storage for larger survey projects.

Point-cloud processing workflow

Geosun provides its own point-cloud processing software for the SLAM product line. The recorded LiDAR, camera, GNSS and inertial information is processed to generate a usable georeferenced point cloud for further work.

After processing, the data can be used in compatible surveying, CAD, BIM, GIS, mining, engineering or specialist point-cloud applications depending on the final deliverables required by the project.

Who is the Geosun GS-130G for?

The GS-130G is particularly suitable for surveyors, construction companies, engineers, BIM specialists, mine operators, GIS teams, industrial inspection professionals and mobile-mapping companies that need one scanner for a wide range of indoor and outdoor environments.

Its main advantage is the combination of 300 m range, high point rate, SLAM, GNSS/INS and multi-platform operation. This makes it useful for professionals who need to move between conventional outdoor surveying and areas where GNSS equipment alone cannot maintain a reliable position.

Buying the Geosun GS-130G from Global GPS Systems

The right SLAM LiDAR configuration depends on the survey environment, required accuracy, working distance, control method, platform and final deliverables. Global GPS Systems can help determine whether the Geosun GS-130G is suitable for your project and advise on handheld, UAV or mobile configurations, GNSS integration and point-cloud processing workflows.