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Chinese Journal of Space Science ›› 2016, Vol. 36 ›› Issue (1): 77-82.doi: 10.11728/cjss2016.01.077

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Positioning of high Earth orbit satellite using GPS/Beidou combined system

ZHAO Yanzhen   

  1. National Space Science Center, Chinese Academy of Sciences, Beijing 100190;
    University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049
  • Received:2015-01-07 Revised:2015-09-04 Online:2016-01-15 Published:2016-01-06

Abstract:

The characteristics of current high orbit GPS (Global Positioning System) signal are of poor availability and low positioning accuracy. Positioning of high Earth orbit satellites using GPS/Beidou combined system is studied. The visibility of navigation satellites and the Geometric Dilution of Precision (GDOP) are analyzed. Through simulation and analyzing, it is verified that the GPS/Beidou combined system has better performance than that of single GPS system. On one hand, the GPS/Beidou combined system can receive more satellites' signal than single GPS system. On the other hand, GDOP of the GPS/Beidou combined system is smaller than that of single GPS system. At the same time, the use of high-precision atomic clock in the satellite receiver can realize positioning of three satellites, and reduce the technology requirements of receiver.

Key words: GPS (Global Positioning System), Beidou system, Visibility, GDOP, Satellite receiver

CLC Number: