ashtech Reliance FS/2, Руководство по эксплуатации

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Introduction 1
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Introduction
The Reliance system provides full-featured capability for rapid and precise GIS data
acquisition.
Reliance makes it possible for a minimally trained worker to rapidly collect accurate data
on the location and attributes of point features such as trees and fire hydrants, line features
such as roads and power lines, area features such as city blocks and lakes, and nested
points or lines within a line or area.
Reliance has three models corresponding to three levels of accuracy: the standard
Reliance Submeter™ system, the Reliance Decimeter™ system, and the Reliance
Precision™ system. All three systems accept differential corrections in real-time or in
post-processing, and all use the same post-processing software.
The Reliance Submeter system processes C/A code data only and provides the quickest
methods of measurement providing rms accuracies as good as 35 centimeters with either
static or dynamic surveying techniques.
The Reliance Decimeter system records both C/A and carrier phase data to achieve
accuracies as good as 10 centimeters when surveying a point or dynamically recording
line or area features. Reliance only requires the GPS receiver to maintain lock on at least
five satellites for at least 20 minutes.
The Reliance Precision system is a GIS data capture tool that provides as good as one
centimeter accuracy for point features after 30 minutes of stationary occupation, and
provides decimeter on-the-fly accuracy when mapping line or area features.
Equipment
The Reliance system comprises two basic components:
• Hardware—for data acquisition
• Software—for controlling the hardware in the field and post-processing the data
in the office