Introduction
GRS-1 Operator’s Manual
1-8
channels. The receiver processor controls the process of signal
tracking.
After the receiver locks on to four or more satellites, it is possible to
solve the so-called “absolute positioning problem” and compute the
receiver’s coordinates (in WGS-84) and the time offset between the
receiver clock and GPS time. With the collection of enough
information to solve for position and time the receiver can solve an
RTK position if provided with a differential correction from a base
station or network, or the raw observation data may be stored in the
optional SD card or to the internal memory of the unit for later post
processing with a post-processing software package such as Topcon
Tools.
Capabilities of the GRS-1 receiver include:
• Multipath reduction
• Satellite Based Augmentation Systems supported (WAAS and
EGNOS)
• Dual-frequency static, kinematic, and Real time kinematic (RTK)
survey modes (Use to external GNSS antenna MG-A8 or PG-
A1)
• Single-frequency static, kinematic, and differential GPS (DGPS)
survey modes
• Setting different mask angles
• Setting different survey parameters
The integrated 2 megapixel camera is used for taking pictures of
surveyed objects or survey sites.
Getting Acquainted with the
GRS-1
The GRS-1 is an integrated field controller and 72-channel GPS
receiver with an internal electronic compass and digital camera. USB
and serial ports, along with Bluetooth® and Wireless LAN provide