Individual Global Navigation Satellite Systems in the Space Service Volume

Dale A. Force

Abstract:	Besides providing position, velocity, and timing to terrestrial users, GPS is currently used to provide for precision orbit determination, precise time synchronization, real-time spacecraft navigation, and three-axis control of Earth orbiting satellites. With additional Global Navigation Satellite Systems (GNSS) coming into service (GLONASS, Beidou, and Galileo), it will be possible to provide these services by using other constellations. The paper, “GPS in the Space Service Volume”, presented at the ION GNSS 19th International Technical Meeting in 2006 [1], defined the Space Service Volume, and analyzed the performance of GPS out to seventy thousand kilometers. This paper will report a similar analysis of the performance of each of the additional GNSS and compare them with GPS only. The Space Service Volume, defined as the volume between three thousand kilometers altitude and geosynchronous altitude, as compared with the Terrestrial Service Volume between the surface and three thousand kilometers. In the Terrestrial Service Volume, GNSS performance will be similar to performance on the Earth’s surface. The GPS system has established signal requirements for the Space Service Volume. A separate paper presented at the conference covers the use of multiple GNSS in the Space Service Volume.
Published in:	Proceedings of the 2013 International Technical Meeting of The Institute of Navigation January 29 - 27, 2013 Catamaran Resort Hotel San Diego, California
Pages:	604 - 716
Cite this article:	Force, Dale A., "Individual Global Navigation Satellite Systems in the Space Service Volume," Proceedings of the 2013 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2013, pp. 604-716.
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