Systems Engineering and Electronics

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GNSS constellation availability evaluation method based on Markov chain

WANG Ershen1,2, ZHANG Qing1, QU Pingping1, LAN Xiaoyu1, PANG Tao1, JIANG Yi3   

  1. 1. School of Electronic and Information Engineering, Shenyang Aerospace University, Shenyang 110136, China;2. Liaoning General Aviation Key Laboratory, Shenyang Aerospace University, Shenyang 110136, China;3. Information Science and Technology College, Dalian Maritime University, Dalian 116026, China
  • Online:2017-03-23 Published:2010-01-03

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Abstract:

The constellation availability of satellite navigation system is one of the important indexes when evaluating the satellite navigation system performance. The satellite availability model based on Markov chain is set up, and the satellite failure rate and repair rate are taken into account in the model. Moreover, the signal in space (SIS) and service constellation availability evaluation models are proposed by combining with the backup satellites. According to the real measured data of global positioning system (GPS), SIS and service constellation availability are verified. The results demonstrate that the proposed evaluation models are effective and the performance conform GPS performance standards. Meanwhile, the satellite availability and constellation availability evaluation methods are instructive for the study of globalization construction and availability evaluation of BeiDou navigation satellite system.

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