Novatel OM-20000041 User Manual

Table of Contents

MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1

RTCM General Message Format ..................................................................................................48
RTCM Standard Commands ........................................................................................................49
RTCM Standard Logs ..................................................................................................................49

4.3 CMR Format Messaging .....................................................................................................................55

Using RT-2 or RT-20 with CMR Format Messages ....................................................................56

4.4

RINEX Format .................................................................................................................................56

4.4.1 Commands ...........................................................................................................................57
4.4.2 Logs .....................................................................................................................................58

GPS Overview

A.1 GPS System Design ...........................................................................................................................62

The Space Segment  ......................................................................................................................62
The Control Segment  ...................................................................................................................63
The User Segment  ........................................................................................................................63

A.2 Height Relationships ..........................................................................................................................63
A.3 GPS Positioning .................................................................................................................................64

A.3.1 Differential Positioning ......................................................................................................66
A.3.2 Pseudorange Algorithms ....................................................................................................67

A.4 Carrier-Phase Algorithms ..................................................................................................................71

Multipath Elimination Technology

B.1 Multipath ............................................................................................................................................73

Why Does Multipath Occur? .......................................................................................................73
Consequences of Multipath Reception .........................................................................................74

B.2 Hardware Solutions For Multipath Reduction ...................................................................................74

Commands Summary

WAAS

................................................................................................................103