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Topcon GRS-1 for GIS (Previously Available)

All-in-one Field Device

The GRS-1 is the world's first fully integrated, dual-constellation network-enabled rover system. 


Features & Benefits:

  • Scalable Accuracy
  • GNSS (GPS + GLONASS) Satellite Receiver
  • GSM or CDMA Internal Cellular (optional)
  • Powerful Computing Features
  • 2.0 Megapixel Camera
  • Built-in Bluetooth and Wireless LAN Connectivity
An internal L1 antenna provides DGPS capability for submeter GIS and navigation. Use an external L1 antenna for real-time subfoot work. Add the external L1/L2 antenna and connect to your local GNSS network for >5cm GIS work. The GRS-1 is the perfect fit for any GIS application including high accuracy projects such as utility infrastructure, electric and gas, water/wastewater, asset management and land records management.
Topcon’s new GRS-1 (Geodetic Rover System) is the world’s first fully integrated dual constellation network enabled RTK rover system. It is an all-in-one handheld GNSS receiver and field controller featuring high-speed processor, increased memory, built-in camera and digital compass. Also integrated are an SD memory card slot, optional internal GSM or CDMA modem, and wireless connectivity via Wireless LAN and Bluetooth® wireless technology.

The GRS-1 achieves three primary and evolutionary goals for a GNSS receiver: small size, scalability, and affordability. It provides DGPS capability via an internal L1 antenna, perfect for the GIS update and navigation space. Instantly move to centimeter RTK accurate for high accuracy GIS projects by simply adding a carbon-fiber pole with Topcon’s PG-S1 external antenna then connect to your local GNSS network via the internal modem. As an added benefit, the GRS-1 can also be used as a static post processed receiver system.

Built-in 2.0 Megapixel Camera (Optional)

That’s right, the GRS-1 comes with a 2.0 megapixel camera with autofocus for taking pictures. Store photos on-board with the 1GB of Flash memory or use the external SD card slot for additional memory.

Internal Magnetic Compass

Utilizing compass bearing with GNSS positioning, the magnetic compass allows for additional measurements to be taken from a single location and for complete navigation functionality.

Extra Memory

With 1GB Flash standard, the GRS-1 is loaded with memory. But if you need more, the SD card slot and the mini USB Host functionality can provide additional memory. Use the USB mini port as both a Host and Client. This functionality allows for expanded memory and easy file transfer through USB flash drives or SD memory cards.

Bluetooth® and Wireless LAN

Built-in Bluetooth wireless technology and Wireless LAN connectivity come standard. No need for expensive upgrades or CF cards. Use your device in a typical Hotspot to surf the web, check weather or e-mail files back to the office. When not in use, Topcon also provides a way to turn Bluetooth and Wireless LAN off to conserve battery power. 

Available Application Software: Topcon’s MAGNETTM Software!

A family of software solutions that streamlines the worklow for surveyors, contractors, engineers, and GIS/mapping professionals. MAGNET is a suite of productivity software products that increase productivity through collaboration of office and field data. From the intuitive user interface running on a field controller, to the cloud-linked office CAD software, and web-browser Enterprise interface, MAGNET Solutions provides a new increased level of productivity.


Designed to be easy and intuitive, eGIS is the best software solution for location based information recording for mobile GIS solutions. Configurable to user needs, and compatible with arcPad and PDF maps.

Associated Products