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Appendix D: Comparison of GPS and GLONASS satellite navigation systems
David H. Titterton, John Weston
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Abstract
There are currently two satellite-based navigation systems deployed, the American controlled system known as GPS or Navstar and the Russian system GLONASS. There are a number of similarities between the two systems, such as the constellations consist of up to 24 satellites, although the configuration within each constellation is somewhat different. There are several other similarities between the two systems, but the characteristics of the two systems are sufficiently different to affect their operation and world coverage. The similarities and complementary nature of the differences in coverage lead to the possibility of using the systems together in an integrated system to enhance navigation performance. In this appendix, these satellite navigation systems were compared.