The Global Positioning System: A Shared National Asset

Front Cover

The Global Positioning System (GPS) is a satellite-based navigation system that was originally designed for the U.S. military. However, the number of civilian GPS users now exceeds the military users, and many commercial markets have emerged. This book identifies technical improvements that would enhance military, civilian, and commercial use of the GPS. Several technical improvements are recommended that could be made to enhance the overall system performance.

 

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Contents

Executive Summary
1
1 Introduction
13
2 GPS Applications and Requirements
19
3 Performance Improvements to the Existing GPS Configuration
67
4 Technical Enhancements for Future Consideration
123
Appendix A Study Participants
135
Appendix B Abbreviated Committee Biographies
139
Appendix C Overview Of The Global Positioning System And Current Or Planned Augmentations
145
Appendix F Report From Dr Young Lee The MITRE Corporation
201
Appendix G Increased Bandwidth Performance Analysis
213
Appendix H Signal Structure Options
215
Appendix I Report From Mr Melvin Barmat JanskyBarmat Telecommunications Inc
221
Appendix J Selective Denial of Civilian GPS Signals by the Military
249
Appendix K Direct YCode Acquisition
253
Appendix L Enhanced Signal Structures for the Military
255
Appendix M Accuracy of a 14Satellite Ensemble Versus a 24Satellite Ensemble
263

Appendix D Accuracy Definitions And Mathematical Relationships
177
Appendix E Report From Mr Michael Dyment Booz Allen Hamilton
179

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