Table of Contents
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1 7
FIGURES
2-1 The WAAS Concept .................................................................................................................................29
3-1 Pass-Through Log Data ............................................................................................................................43
A-1 NAVSTAR Satellite Orbit Arrangement .................................................................................................62
A-2 Illustration of GPSCard Height Measurements ........................................................................................64
A-3 Accuracy Versus Precision ......................................................... .... ..........................................................65
A-4 Example of Differential Positioning ........................................................................................................66
A-5 Single Point Averaging ............................................................................................................................69
A-6 Typical Differential Configuration ............................................. ..............................................................70
B-1 Illustration of GPS Signal Multipath ....................................................................... .... .... .........................73
B-2 Illustration of GPS Signal Multipath vs. Increased Antenna Height .......................................................75
B-3 Illustration of Quadrifilar vs. Microstrip Patch Antennae ........................................................................76
B-4 Comparison of Multipath Envelopes ........................................................................................................78
C-1 HELP Command Screen Display .............................................................................................................102
C-2 Appended Command Screen Display ......................................................................................................102
C-3 Illustration of Magnetic Variation & Correction ............................................................. ... .... ..................107
C-4 Using SEND Command............................................................................................................................121
C-5 Illustration of SETNAV Parameters ...................................................................................... ..................127
C-6 Illustration of Undulation .........................................................................................................................130
D-1 Example of Navigation Parameters ..........................................................................................................175
D-2 The WGS84 ECEF Coordinate System ...................................................................................................185
E-1 Typical RT-2 Horizontal Convergence - Static Mode .............................................................................227
E-2 Typical RT-2 Horizontal Convergence - Kinematic Mode ......................................................................227
E-3 RT-2 Accuracy Convergence ...................................................................................................................228
E-4 Illustration of RT-2 Steady State Performance ........................................................................................228
E-5 Typical RT-20 Convergence - Static Mode ................................................................ .... .........................229
E-6 Typical RT-20 Convergence - Kinematic Mode ......................................................................................230
E-7 RT-20 Steady State Performance .............................................................................................................230
E-8 RT-20 Re-initialization Process ...............................................................................................................232