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GPS Versus Galileo : Balancing for Position in Space

By: Scott W. Beidleman

This study investigates Europe’s motives to develop the independent satellite navigation system known as Galileo despite the existence of America’s successful global positioning system (GPS). The study begins by analyzing both systems to familiarize the reader with global navigation satellite systems (GNSS) and to provide an understanding of the strengths and weaknesses of GPS and Galileo, as well as the systems’ similarities and differences. Although the two systems have different founding principles, they employ similar infrastructures and operational concepts. In the short term, Galileo will provide better accuracy for civilian users until GPS upgrades take effect. But performance is only part of the rationale. The author contends that Europe’s pursuit of Galileo is driven by a combination of reasons, including performance, independence, and economic incentive. With Galileo, Europe hopes to achieve political, security, and technological independence from the United States....

DISCLAIMER . . . . . . . . . . . . . . . . . . . . . . .ii FOREWORD . . . . . . . . . . . . . . . . . . . . . . .vii ABOUT THE AUTHOR . . . . . . . . . . . . . . . . .ix ACKNOWLEDGMENTS . . . . . . . . . . . . . . . . .xi 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . 1 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2 GPS VERSUS GALILEO . . . . . . . . . . . . . . .11 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . .27 3 WHY GALILEO? . . . . . . . . . . . . . . . . . . .31 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . .45 4 IMPLICATIONS AND RECOMMENDATIONS . .51 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . 66 ABBREVIATIONS . . . . . . . . . . . . . . . . . . . .69 BIBLIOGRAPHY . . . . . . . . . . . . . . . . . . . . 71 Illustrations 1 Satellite geometry 9 2 Global positioning system (GPS) satellite 14 3 Galileo satellite 16 Table 1 Number of visible satellites for various masking angles . . . . . . . . . . . . . . . . . . . .13...

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