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3510LR USER MANUAL

Issue 1.0 11/04

INTRODUCTION

About This Manual

This manual has been produced to assist the typical user with the installation and

operation of the 3510LR DGPS Receiver.

System Features

The 3510LR DGPS Receiver is a component part of the Fugro world-wide DGPS

Service. The Fugro service is a full-time differential GPS (DGPS) broadcast

system delivering corrections from an array of GPS reference stations located

around the globe. Reference stations provide industry standard formatted

corrections to Network Control Centres (NCC’s) at strategic geographic locations,

where the corrections are decoded, checked, and repackaged in a highly efficient

format for broadcast. The data is modulated onto a RF carrier that is then up-

converted for transmission to an L-band communications satellite.

The signals are received at the user's location by an antenna, demodulated by a

receiver, and are made available, after selection of the desired individual reference

site's data set, as corrections for use in a GPS, differential-capable, receiver.

The 3500 series of receivers support the following OmniSTAR® services:

1. Virtual Base Station where the data from multiple reference stations is used

in processor software to produce enhanced corrections for the user's

location. The resulting corrections are restructured as RTCM SC-104

version 2 corrections for direct application to a user's receiver.

2. Virtual Reference Cell, where the data from multiple reference stations is

used in processor software to produce enhanced corrections for an

optimised reference Cell. The resulting corrections are restructured as

RTCM SC-104 version 2 corrections for direct application to a user's receiver

or an internal Receiver.

3. DGPS Services Stand alone differential GPS, where corrections from one

selected site are extracted from the incoming data stream and are

reformatted to an industry standard Format, RTCM SC-104.

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SeaSTAR 3510LR Manual do Utilizador Página 9