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Topcon Announces GRS-1 Hand-Held GNSS Integrated Rover System

Fri March 27, 2009 - National Edition
Construction Equipment Guide


Topcon Positioning System’s (TPS) new GRS-1 is a 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, built-in camera, compass and bar code reading function.

Features also integrated into the new system are an SD memory card slot, optional internal GSM or CDMA modem, and wireless connectivity via Wi-Fi and Bluetooth technology.

The GRS-1 (Geodetic Rover System) was designed with two primary system design goals: Smaller size and weight, and lower-than-expected cost. According to Mark Contino, vice president of survey and GPS sales, the GRS-1 “packs all the power of a full GPS + GLONASS dual-frequency receiver, cellular modem and Windows PC into a very small, very powerful package.”

Designed primarily as a GPS network rover receiver, the GRS-1 “provides a small, lightweight rover and a price to fit any budget,” he said. “The new receiver has DGPS capability with an internal L1 antenna for GIS and navigation. Add the PGA-1 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 also can be used as a static post processed receiver system.”

The GRS-1 uses the Windows Mobile 6.1 operating system to run TopSURV, Topcon’s surveying software. TopSURV 7.2 adds new features and functions that are unique to the GRS-1. The receiver and field controller also has a 3.7 in. touch screen display and its rugged construction is rated to stand a 3 ft. drop.

In addition to the network rover configuration, the GRS-1 also has an optional RH-1 radio module that can be configured to work with existing Topcon GNSS receiver systems that are already in the market today. The RH-1 is available in digital UHF, spread spectrum and frequency channel scan UHF varieties.

All forms of radio correction that current and legacy Topcon GPS+ systems offer are supported within the RH-1 module of the GRS-1 system. This means that if a customer purchased a previous system from Topcon they can be backwards compatible.

Contino said, “With the GRS-1 network rover, no additional modem or equipment is needed . . . it’s all built in. The user can access an RTK network for sub meter to sub foot mapping. By attaching an easy-to-connect external antenna, centimeter accuracy is instantly achieved.”

For more information, visit www.topconpositioning.com/GRS1.




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