Acta Geodaetica et Cartographica Sinica >

2016 , Vol. 45 >Issue 10: 1157 - 1164

DOI: https://doi.org/10.11947/j.AGCS.2016.20160055

Solution Method and Precision Analysis of Multi-days Orbit Combination of BeiDou Satellites

  • LIU Weiping ,
  • HAO Jinming ,
  • YU Heli ,
  • TIAN Yingguo
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  • School of Navigation and Aerospace Engineering, Information Engineering University, Zhengzhou 450001, China

Received date: 2016-01-31

  Revised date: 2016-06-21

  Online published: 2016-11-08

Supported by

Major Projects of the Second Generation Satellite Navigation System in China (No.GFZX0301040308)

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Abstract

Multi-days orbit of BeiDou satellites is gotten by the routine method of stacking observation data at present, which limits calculation efficiency. And moreover, the dynamic model of BeiDou satellites is not perfect because of the short running time, which also limits the precision of multi-days orbit. The method of multi-days BeiDou satellite orbit combination is present. In this method, normal equation stacking is used to combining some consecutive one-day BeiDou satellite orbits to one multi-days orbit, which can improve calculation efficiency. Meanwhile, pseudo-stochastic pulse is used to compensate the deficiency of dynamic model. The analysis shows that it is the pseudo-stochastic pulse at one-day boundary that improves the precision of BeiDou satellite orbits obviously. And the tangential and normal precision is improved more than the radial. The orbit precision of GEO and IGSO is improved more than that of MEO. And the precision of BeiDou satellite orbit can be improved by extending the orbit arc length with certain limits, which is especially in the tangential direction.

Key words： BeiDou navigation satellite system; precise orbit determination; normal equation stacking; orbit combination; pseudo-stochastic pulse

Cite this article

LIU Weiping , HAO Jinming , YU Heli , TIAN Yingguo . Solution Method and Precision Analysis of Multi-days Orbit Combination of BeiDou Satellites[J]. Acta Geodaetica et Cartographica Sinica, 2016 , 45(10) : 1157 -1164 . DOI: 10.11947/j.AGCS.2016.20160055

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