Acta Geodaetica et Cartographica Sinica ›› 2016, Vol. 45 ›› Issue (S2): 101-108.doi: 10.11947/j.AGCS.2016.F031

Previous Articles     Next Articles

Combining Regional Monitoring Stations with Space-based Data to Determine the MEO Satellite Orbit

WANG Le, ZHANG Qin, HUANG Guanwen, YAN Xingyuan, QIN Zhiwei   

  1. College of Geology Engineering and Geomantics, Chang'an University, Xi'an 710054, China
  • Received:2016-11-25 Revised:2016-12-20 Online:2017-05-20 Published:2017-05-20
  • Supported by:

    The National Natural Science Foundation of China (Nos.41304033;41504006;41674034);The Grand Projects of the Beidou-2 System(No.GFZX0301040308);The National Natural Science Foundation of Shanxi Province of China(No.2016JQ4011);State Key Research and Development Plan(No.2016YFB0501804)

Abstract:

The ground monitoring stations of BeiDou Navigation Satellite System (BDS) are regional distribution and the number of these stations is small. The more global ground stations cannot be built in the short term. The ground regional monitoring stations are difficult to observe the global Medium Earth Orbit Satellite (MEO) continuously, which leads to low precision of orbits in BDS real-time broadcast ephemeris. Based on the above problems, in view of real time satellite GNSS data of low earth orbit satellite can effectively make up the lack of regional monitoring stations in space overlay, a method is proposed that the GNSS receivers of LEO satellites used as high dynamic space-based monitoring stations combining with the data of the ground monitoring stations to calculate and forecast the MEO satellite orbits. The numeral results show that, using the data of seven regional monitoring stations add 1 to 3 LEO satellites, the precision of the MEO orbit determination can be increased by about 21%, 34% and 55% respectively. It also shows that, the ground regional monitoring stations combined with the data of LEO satellites can effectively improve the orbit precision of MEO satellite. It is suggested that using the data combined with ground stations and LEO satellites to improve the precision of broadcast ephemeris of MEO in BDS.

Key words: orbit, region, LEO satellite, BDS

CLC Number: