Dual Frequency RTK GNSS Receiver and Field Controller
Topcon Positioning System’s 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 with high-speed processor, increased memory, compass and optional built-in camera.
The GRS-1 was designed with two primary system goals: smaller size and weight, and lower cost. The new receiver has DGPS capability with internal L1 antenna for use in the GIS and navigation space, add the external antenna and connect to your local GNSS network via the internal modem, and instantly move to dual frequency, dual constellation GNSS centimeter RTK accuracy. The GRS-1 can also be used as a static post processed receiver system.
The GRS-1 also includes integrated SD memory card slot, optional internal GSM or CDMA modem, connectivity via Wireless LAN and Bluetooth® technology. Sunlight readable screen that is visible outdoors and displays Topcon application software such as MAGNET Field and Pocket-3D. The virtual keyboard provides on-screen keyboard for fast data entry. Running Windows Mobile® operating system, many job functions can be done in the field with the GRS-1 and internal cellular modem.
|Number of Channels||72 GPS + Glonass L1/L2 tracking|
|CORS Beacon||Yes with BR-1|
|DGPS Accuracy||50cm HRMS|
|L1, L2 Static Function||H: RMS 3mm + 0.8ppm
V: RMS 4mm + 1.0ppm
|Real time RTK Accuracy||H: 10mm + 1.0ppm
V: 15mm + 1.0ppm
|Office Software (post processing)||Topcon Tools™, SurveyMaster|
|Operating System||Windows® Mobile 6.1|
|Data Update/Output Rate||1Hz – 100Hz Selectable*|
|GNSS Receiver||GPS + GLONASS|
|Cellular Capability||Internal GSM or CDMA**|
|Input/Output||Bluetooth®, USB, Serial, ANT, and Power|
|Wireless LAN Connectivity||Standard (Internal, 802.11.b)|
|Magnetic Compass||Internal, 4 degree accuracy|
|Expansion Connector||Weatherproof Communication Port|
|Battery Life||5 hrs while in GPS static mode|
|Battery Type||2500mAh Removable, Li-Ion Rechargeable|
|Dimensions||7.76” x 3.54” x 1.81” (197 x 90 x 46mm)|
|Weight||1.5 lbs (0.7kg)|
|Display||3.7” VGA LCD|
|Built-in Camera||2.0 Megapixel|
|Keyboard||3 Key plus Virtual Keyboard|
|Operating Temperature||-20° to 50°C|
|Operating with camera||-10° to 50°C|
|Storage Temperature||-30° to 60°C|
*Data rates from 10 - 100hz and higher available as option
**GSM/CDMA available as factory options
† RMS Value unless otherwise specified. Accuracy will vary depending on the number of satellites used, obstructions, satellite geometry (PDOP), occupation time, multipath effects, and atmospheric conditions. Performance may be degraded in conditions with high Ionospheric activity, extreme multipath, or under dense foliage. For maximum system accuracy, always follow best practices for GNSS data collection.