Hướng dẫn bình sai GPS Huace X20 - phần 1

HuaceNav GPS Post Process
User Guide
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Shanghai
Dec. 2005
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CONTENTS
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CHAPTER I INSTALLATION......................................................................................1
1.1 Software Package .........................................................................................................1
1.2 Installation....................................................................................................................1
1.3 Uninstall .....................................................................................................................10
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CHAPTER II QUICK START .....................................................................................14
2.1 Static GPS data process ..............................................................................................14
2.1.1 New File .............................................................................................................14
2.1.2 Input Data ...........................................................................................................16
2.1.3 Baseline Processing............................................................................................19
2.1.4 Adjustment Settings ...........................................................................................21
2.1.5 Network Adjustment Processing ........................................................................25
2.1.6 Output Results ....................................................................................................26
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CHAPTER III MAIN PROGRAM.................................................................................28
3.1 Run Compass Main Program......................................................................................28
3.2 Menu Bar and Tool Bar ..............................................................................................30
3.2.1 Menu Bar............................................................................................................30
3.2.2 Tool Bar ..............................................................................................................31
3.3 Network......................................................................................................................32
3.3.1 Contents of Network...........................................................................................32
3.3.2 Pop-up Menus in Network Window ...................................................................34
3.3.3 Refresh Network, Zoom in/zoom out, and Panning Network ............................34
3.3.4 Network Properties.............................................................................................35
3.4 Tree View Operation ..................................................................................................38
3.4.1 Tree window.......................................................................................................38
3.4.2 Lists window ......................................................................................................39
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CHAPTER IV MANAGE YOUR PROJECT .............................................................41
4.1 Establish Coordinate System and Coordinate System Management..........................41
4.2 New project ................................................................................................................44
4.3 Observation Data ........................................................................................................46
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4.3.1 Observation File .................................................................................................47
4.3.2 Observation Data Format ...................................................................................48
4.3.3 Data Preparation.................................................................................................50
4.3.4 Input Data ...........................................................................................................51
4.3.5 Observation File Name .......................................................................................54
4.3.6 Properties of Observation File............................................................................56
4.3.7 Delete Observation Data.....................................................................................62
4.3.8 Transfer observation data to RINEX 2.0 tables..................................................62
4.4 Observation Station ....................................................................................................63
4.4.1 Generate Observation Points ..............................................................................64
4.4.2 Properties of Observation Station.......................................................................65
4.4.3 Delete Observation Station.................................................................................67
4.5 Static Baseline ............................................................................................................68
4.5.1 Baseline Components.........................................................................................69
4.5.2 Pop-up Menu of the Static Baseline ...................................................................69
4.5.3 Baseline Properties .............................................................................................70
4.5.4 Delete Static Baseline.........................................................................................73
4.5.5 Check Detailed Static Baseline Computation.....................................................74
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CHAPTER V STATIC BASELINE ................................................................................76
5.1 Baseline Processing Flow...........................................................................................76
5.1.1 Parameters Setting ..............................................................................................76
5.2 Settings of Baseline Processing..................................................................................81
5.2.1 General Settings .................................................................................................82
5.2.2 Troposphere and Ionosphere Set Up...................................................................85
5.2.3 Advance Settings................................................................................................86
5.3 Baseline Processing ....................................................................................................87
5.4 Recheck Process Results ............................................................................................88
5.4.1 Baseline Quality Control ....................................................................................88
5.4.2 Closed Loop Checking .......................................................................................91
5.4.3 Check Free Network Adjustment .......................................................................95
5.5 Distinguish Different Influence Factors .....................................................................95
5.5.1 Influence Factors................................................................................................95
5.5.2 Influence Factors: Distinguish and Solve ...........................................................97
5.6 Re-process a Baseline...............................................................................................101
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CHAPTER VI NETWORK ADJUSTMENT...............................................................102
6.1 Network Adjustment: Functions and Steps...............................................................102
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6.2 Preparations before Hand .........................................................................................104
6.2.1 Coordinate System Settings..............................................................................104
6.2.2 Network Adjustment Settings...........................................................................105
6.2.3 Input know Point ..............................................................................................109
6.3 Running Network Adjustment..................................................................................110
6.3.1 Derive Baseline Vectors Network.....................................................................110
6.3.2 Connectivity Check of Baseline Vectors Network ...........................................110
6.3.3 Free Adjustment ...............................................................................................111
6.3.4 3-Dimensional Constrained Adjustment...........................................................113
6.4 2-Dimensional Constrained Adjustments .................................................................114
6.5 Height Fitting ...........................................................................................................115
6.6 Result Checking .......................................................................................................116
6.7 Statistic Checking of GPS Network .........................................................................117
6.7.1
Check............................................................................................................117
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6.7.2 Check.............................................................................................................119
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CHAPTER VII INPUT AND OUTPUT .......................................................................124
7.1 Observation Data, Ephemeris Data Input/Output .....................................................124
7.2 Static Baseline Output..............................................................................................125
7.3 Kinematics Route Input/Output................................................................................130
7.4 Observation Station Input/Output.............................................................................133
7.4.1 Detailed Results Report in Text File.................................................................133
7.5 Output/Input: Others.................................................................................................135
7.5.1 Output Result Report........................................................................................135
7.5.2 Output Networ ..................................................................................................136
7.5.3 Output Closing Error ........................................................................................136
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CHAPTER VIII KNOWN ISSUES ..............................................................................138
8.1 Fundamental of Baseline Processing Settings ..........................................................138
8.1.1 Select Proper Solution......................................................................................138
8.1.2 Select Proper Parameters..................................................................................139
8.2 Fieldwork Checking .................................................................................................140
8.2.1 Simultaneous Observation Baseline Checking.................................................141
8.2.2 Duplicate Baselines Checking..........................................................................141
8.2.3 Synchrony-closing Error and Asynchrony-closing Error Checking.................141
8.3 Adjustment Parameters and Baseline Vectors ..........................................................143
8.3.1 Select Coordinate System Properly ..................................................................143
8.3.2 Selected Known Points Must Meet Wanted Precision......................................145
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8.3.3 Select Baseline Properly...................................................................................146
8.4 Checking Adjustment Quality ..................................................................................147
8.4.1 Requirement of Precision.................................................................................147
8.4.2 Adjustment Checking.......................................................................................147
8.5 GPS Network Outer Checking .................................................................................149
8.6 Compare to Total Station..........................................................................................152
8.6.1 Conceptions......................................................................................................152
8.6.2 Check baseline length using laser/Infrared distance measuring instrument .....153
8.6.3 Compare-survey to Total Station......................................................................154
APPENDIX A TERMS...........................................................................................................156
APPENDIX B: JULIAN DATE TABLE...............................................................................162
APPENDIX C INSTRUCTION OF RINEX ........................................................................164
APPENDIX D SP3 PRECISE EPHEMERIS FORMAT ....................................................171
APPENDIX E YUMA EPHEMERIS FORMAT .................................................................176
POSTSCRIPT.........................................................................................................................177
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