Sokkia SR-S1 Professional Handheld 3D SLAM & LiDAR Scanner

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Overview

The Sokkia SR-S1 Professional Handheld 3D Scanner is a high-performance SLAM LiDAR reality-capture system built for surveyors, contractors, engineers, utility professionals, and geospatial teams that need fast, accurate 3D data across complex environments.

Using advanced multi-sensor fusion, the SR-S1 captures LiDAR, camera, IMU, GNSS, and RTK data simultaneously while the operator walks through the project site. Its integrated SLAM engine maintains a stable and repeatable trajectory, helping control drift when moving between open-sky areas, buildings, tunnels, utilities, covered spaces, and other GNSS-challenged environments.

With a scan rate of up to 640,000 points per second, a 120 m LiDAR range, and relative accuracy under 1 cm, the SR-S1 is designed for demanding professional applications where point-cloud detail, scanning speed, and measurement confidence matter.

Key Features

• Professional handheld SLAM LiDAR scanner
• One-person mobile reality-capture workflow
• 640,000-point-per-second scan rate
• LiDAR detection range up to 120 m / 393.7 ft
• LiDAR accuracy of 0.5 cm / 0.20 in.
• Absolute accuracy under 3 cm / 1.18 in.
• Relative accuracy under 1 cm / 0.39 in.
• Repeat accuracy under 2 cm / 0.79 in.
• MLF-SLAM, PPK-SLAM, RTK-SLAM, and SLAM mapping methods
• Integrated 1408-channel GNSS receiver
• RTK, PPK, and ground-control-point support
• Real-time processing and colorized point-cloud preview
• Five-camera imaging system
• 512 GB internal SSD storage
• Class 1 eye-safe 905 nm laser
• Handheld, pole, backpack, frontpack, vehicle, and airborne mounting options
• MAGNET Flow field collection software
• MAGNET Bridge desktop processing workflow
• Collage Web sharing capability
• IP64 environmental protection

SR-S1 vs SR-S2

The SR-S1 and SR-S2 use the same general MAGNET-connected SLAM workflow, but they are designed for different levels of performance and portability.

Choose the SR-S1 When:

• Higher point density is important
• You need the longest available scanning range
• You want the strongest relative and LiDAR accuracy
• You are capturing roads, corridors, infrastructure, or large sites
• Vehicle or airborne collection is part of the workflow
• Detailed professional deliverables are the priority
• Faster capture of large areas can justify the larger scanner

Choose the SR-S2 When:

• Lower weight and handheld portability are the priority
• Most projects involve buildings, interiors, smaller jobsites, stockpiles, or short-range collection
• A 40 m to 70 m LiDAR range is sufficient
• You want an accessible SLAM scanner for everyday reality capture
• The highest scan rate and sub-centimeter relative accuracy are not required

The SR-S1 is the higher-performance professional model, offering more than three times the scan rate of the SR-S2, longer range, better relative accuracy, and more mounting flexibility. The SR-S2 is the lighter and more portable option, making it easier to carry for everyday handheld scanning.

What Is Topnet Live?

Topnet Live is Topcon’s real-time GNSS correction service used to improve positioning accuracy for compatible GNSS receivers in surveying, construction, GIS, mapping, agriculture, machine control, and related applications. Instead of setting up your own local base station, a compatible rover or RTK-enabled system can receive correction data through Topnet Live to achieve more accurate field positioning.

For the Sokkia SR-S1, Topnet Live is useful when you want stronger georeferenced scan data in supported coverage areas. It can help connect the scanner’s RTK workflow to correction services, improving positioning confidence during reality capture and site documentation.

Topnet Live includes different correction service options, including Realpoint RTK, Skybridge RTK backup, and Starpoint Pro PPP. Realpoint provides network RTK corrections via NTRIP, with horizontal accuracy listed at 2 cm, while Starpoint Pro provides global PPP corrections with horizontal accuracy of 3 cm and vertical accuracy of 5 cm.

In simple terms, Topnet Live helps the SR-S1 locate itself more accurately, especially when collecting georeferenced scan data for mapping, construction documentation, utilities, stockpiles, facilities, infrastructure, and site records.

Built for Professional Reality Capture

The SR-S1 allows one operator to walk through a site and continuously capture detailed spatial data without moving a conventional tripod scanner between multiple setups. This helps crews document larger or more complicated areas faster while maintaining immediate visibility into scan coverage.

Typical applications include:

• Construction documentation
• Existing-condition surveys
• Topographic data collection
• Utility mapping
• Open-trench documentation
• Progress monitoring
• As-built surveys
• Stockpile and volume measurement
• Facility documentation
• Infrastructure inspection
• Road and corridor mapping
• Tunnel and mining surveys
• Indoor mapping
• Underground data collection
• Forestry and heavily obstructed environments

Real-time point-cloud preview helps the operator confirm coverage before leaving the site, reducing the chance of missed areas, return visits, and rework.

High-Speed XT32 LiDAR

The SR-S1 uses an XT32 LiDAR sensor capable of collecting up to 640,000 points per second. Its high point density helps capture more surface detail while moving through the site, making it suitable for detailed documentation, measurement, surface analysis, and model creation.

The LiDAR system provides:

• Detection range up to 120 m / 393.7 ft
• Accuracy of 0.5 cm / 0.20 in.
• 280° horizontal field of view
• 360° vertical field of view
• Class 1 eye-safe laser
• 905 nm wavelength

This combination of speed, range, and accuracy makes the SR-S1 especially well suited for larger sites, long corridors, detailed structures, and projects where scanning efficiency is critical.

RTK, PPK, and GCP Support

The SR-S1 includes a 1408-channel GNSS receiver supporting GPS, GLONASS, Galileo, BeiDou, QZSS, and SBAS signals. It can receive NTRIP RTK corrections and supports RTCM 3.x correction data.

Listed RTK performance includes:

• Horizontal RTK accuracy: 0.8 cm + 1 ppm
• Vertical RTK accuracy: 1.5 cm + 1 ppm

RTK, PPK, and ground-control-point workflows help strengthen georeferencing and improve confidence that the scan is properly positioned within the project coordinate system.

This flexibility is valuable when moving through mixed environments where GNSS may be available outdoors but reduced or unavailable indoors, underground, or beneath structures.

Real-Time Colorized Point Clouds

The Sokkia SR-S1 supports real-time processing and colorization, allowing crews to view scan coverage during collection. Its five-camera system includes two visual SLAM cameras and three 12 MP panoramic cameras for detailed color imagery.

Supported deliverables include:

• Colored LAS point clouds
• LOD-OSGB mesh data
• JPG panoramic images
• Orthophotos through MAGNET Bridge
• Length, area, and volume calculations

This gives users more than a visual scan. The resulting dataset can be used to measure features, verify conditions, calculate quantities, create documentation, and support design or construction decisions after the site visit.

MAGNET Flow Field Software

MAGNET Flow provides the field collection interface for the SR-S1 and is compatible with Android and iOS devices.

MAGNET Flow supports:

• Scanner control
• Project creation and management
• Starting and stopping data collection
• Real-time point-cloud browsing
• Ground-control-point collection
• RTK and NTRIP configuration
• Firmware updates
• Field verification of scan coverage

The mobile workflow allows the operator to control the scanner from a compatible phone or tablet without carrying a dedicated proprietary field controller.

MAGNET Bridge Processing

MAGNET Bridge provides the desktop processing workflow for transforming raw SR-S1 data into finished project deliverables.

MAGNET Bridge supports:

• SLAM point-cloud processing
• RTK, PPK, and GCP-supported workflows
• Point-cloud colorization
• Length measurements
• Area calculations
• Volume calculations
• Orthophoto creation
• True-scale imagery
• Quality review and project preparation

This connected workflow helps move data from field collection to usable survey, construction, mapping, and documentation outputs without requiring multiple disconnected software platforms.

Collage Web Sharing

Processed SR-S1 data can be shared through Collage Web for online viewing and evaluation by project teams, clients, engineers, or other stakeholders.

Collage Web provides a practical way to distribute reality-capture results without requiring every recipient to have desktop point-cloud software. It is especially useful for remote project review, progress documentation, condition verification, and client collaboration.

What’s Included

• 1 × Sokkia SR-S1 Professional Handheld SLAM Scanner
• 1 × LiDAR and Camera Protective Cover
• 1 × Phone Mount
• 1 × Device Carrying Case
• 1 × Base Stand
• 1 × Installation Tool
• 2 × Smart Li-Ion Batteries
• 1 × Battery Charger and Power Adapter
• 1 × USB Flash Drive
• 1 × USB Data Cable
• 1 × Quick Start Guide
• 1 × myTopcon Registration Card
• MAGNET Flow Collection Software
• MAGNET Bridge Processing Software
• Collage Web access according to the selected package

Optional Topnet Live Configuration

A Topnet Live subscription may be added for RTK-supported georeferenced scanning workflows.

Topnet Live is Topcon’s GNSS correction service. It allows the SR-S1 to receive network RTK corrections through NTRIP instead of requiring a local GNSS base station in supported coverage areas. This can improve positioning confidence when collecting georeferenced scan data for mapping, utilities, construction documentation, stockpiles, and site records.

The Topnet Live term and service configuration depend on the selected SR-S1 package.

Optional Accessories

Additional accessories are available to adapt the SR-S1 to different capture methods and project environments. Please contact us to add any of these items to your quote.

• CR-S High-Gain RTK Antenna (p/n: 1089315-01)
  Improves GNSS reception in difficult environments where satellite visibility or correction reception may be challenging.
• CR-S RTK Pole Adapter Assembly (p/n: 1085137-01)
  Allows the scanner to be installed on a compatible telescopic RTK pole for elevated capture and ground-control-point workflows.
• CR-S Series Backpack (p/n: 1085136-01)
  Supports hands-free scanning during longer collection sessions and helps distribute the scanner weight across the operator’s body.
• CR-S Series Frontpack (p/n: 1085135-01)
  Provides a forward-mounted hands-free scanning configuration for extended mobile collection and better visibility of the scanner while walking.
• CR-S Mobile Vehicle Kit (p/n: 1089313-01)
  Allows the SR-S1 to be mounted on a vehicle for faster capture of roads, corridors, sites, and larger project areas. Topcon lists a maximum recommended collection speed of approximately 40 km/h or 25 mph, with an ideal density speed near 20 km/h or 12 mph.
• CR-S Airborne Kit (p/n: 1089314-01)
  Supports UAV-mounted data collection for larger or difficult-to-access areas. Aircraft compatibility and payload capacity should be verified before use.
• Smart Li-Ion Battery
  Additional batteries can extend field runtime and help reduce downtime during large scanning projects.
• Battery Charger and Power Adapter
  An additional charger can support multi-battery charging and help prepare multiple battery sets for full-day field work.

Rugged Field Design

The SR-S1 weighs 2.2 kg / 4.85 lb with its base, battery, and RTK module installed. It carries an IP64 protection rating and operates from -20°C to 40°C / -4°F to 104°F.

Additional specifications include:

• 3450 mAh removable lithium battery
• Up to 2 hours of operation per battery under specified test conditions
• 512 GB SSD storage
• USB-C connectivity
• OTA and offline firmware updates
• App and physical-button control
• Device dimensions of 345 × 187 × 120 mm

With two batteries included in the standard hardware package, crews can swap batteries during the workday to extend collection time.

Capture Once and Use the Data Later

The SR-S1 creates a complete 3D record of the project that can be revisited after fieldwork is complete. Users can return to the point cloud to measure additional details, verify conditions, calculate quantities, create as-built documentation, and export project data without physically returning to the site.

This makes the SR-S1 valuable not only as a field measurement tool, but also as a long-term site documentation platform for survey, construction, engineering, facilities, utilities, and infrastructure projects.