RightWay GPS Navigator RW 430 Guia do Utilizador descarregar pdf (Página 30)

4 Setup Guidelines

GPS RTK Base GPS Receiver User Guide

Base station operation guidelines

A base station consists of a receiver that is placed at a known (and fixed)

position. The receiver tracks the same satellites that are being tracked

by the rover receiver, at the same time that the rover is tracking them.

Errors in the GPS system are monitored at the fixed (and known) base

station, and a series of position corrections are computed. The

corrections are sent through a radio link to the rover receiver, where

they are used to correct the real time positions of the rover.

Base station components

The base station has the following components:

• GPS receiver

• GPS antenna

• Base station radio

• Power supply

GPS receiver and GPS antenna

A GPS receiver, such as the AgGPS RTK Base 450 or 900 receiver,

incorporates a GPS receiver, power supply, and base station radio in a

single unit. The GPS antenna and the base station radio antenna are

separate from the receiver. Because the GPS antenna is separate, you

can use the following optimized components:

– a geodetic antenna with large ground plane, to eliminate

multipath (the major source of GPS errors) at the base

station

– a high-gain or directional radio antenna, to increase

broadcast range and to provide maximum coverage

You can also place the GPS receiver in an easily accessible and

secure location, safe from theft and the weather, while the

antennas are placed high on a tower or building, clear of

obstructions, and able to deliver maximum performance.

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RightWay GPS Navigator RW 430 Guia do Utilizador Página 30