Acta Geodaetica et Cartographica Sinica >

2016 , Vol. 45 >Issue S2: 93 - 100

DOI: https://doi.org/10.11947/j.AGCS.2016.F030

A Rapid Orbit Integration Algorithm for Multi-GNSS Satellites

  • FAN Lei ,
  • LI Min ,
  • SONG Weiwei ,
  • SHI Chuang ,
  • WANG Cheng
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  • GNSS Research Center, Wuhan University, Wuhan 430079, China

Received date: 2016-11-25

  Revised date: 2016-12-20

  Online published: 2017-05-20

Supported by

The National Key Research and Development Program of China (No.2016YFB0501800);The National Natural Science Foundation of China (Nos.41231174;41325015;4157040195);The Natural Science Foundation of Hubei province (No.2015CFA057)

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Abstract

A rapid and efficient orbit numerical integration algorithm with high accuracy is needed in multi-GNSS rapid precise orbit determination. In order to improve the compute efficiency, an adaptive step-changed Admas integration method and a synchronous integration algoritm for multi-GNSS satellites are developed in this paper. To validate the precision and efficiency of the proposed method, the multi-GNSS precise orbit products calculated by Wuhan University (WHU) and Center for Orbit Determination in Europe (CODE) are used for orbit fitting. Results show that, the average 3DRMS of GPS, GLONASS, BDS and Galileo satellites are all below 20 mm. Comparing with the traditional step-fixed orbit integraion method applied for each satellite separately, the computational efficiency of the proposed method is improved significantly:without damaging the accuracy, it takes only 0.09 s for a single satellite, which is 14 times faster than the traditional method. Besides, further improvement can be achieved when the number of satellites is increased.

Key words： GNSS; rapid orbit integration algorithm; orbit fitting; multi-system

Cite this article

FAN Lei , LI Min , SONG Weiwei , SHI Chuang , WANG Cheng . A Rapid Orbit Integration Algorithm for Multi-GNSS Satellites[J]. Acta Geodaetica et Cartographica Sinica, 2016 , 45(S2) : 93 -100 . DOI: 10.11947/j.AGCS.2016.F030

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