Journal of Geodesy and Geoinformation Science ›› 2020, Vol. 3 ›› Issue (2): 45-52.doi: 10.11947/j.JGGS.2020.0205

Previous Articles     Next Articles

Solar Radiation Pressure Modeling and Application of BDS Satellites

Qiuli CHEN1,Hui YANG1,Zhonggui CHEN1,Haihong WANG1,Chen WANG2   

  1. 1. Beijing Institute of Engineering Spacecraft System, Beijing 100094, China
    2. GNSS Research Center, Wuhan University, Wuhan 430079, China
  • Received:2017-07-25 Accepted:2020-01-25 Online:2020-06-20 Published:2020-07-08
  • About author:Qiuli CHEN(1986—), female, PhD candidate, senior engineer, majors in satellite navigation technology.E-mail: cql_hong@163.com

Abstract:

Solar radiation pressure (SRP) model is the basis of high precise orbit determination and positioning of navigation satellites. At present, it is common to see the study of SRP model of BDS satellites. However, the establishment and application of a comprehensive analytical SRP model based on satellite physical parameters are rare. Different from other conservative forces and non-conservative forces, SRP is closely related to the satellite’s physical parameters and in-orbit state. On the basis of the physical mechanism of solar radiation, BDS satellite physical parameters, in-orbit attitude control mode, and so on, a comprehensive analytical model has been studied in this paper. Based on precise ephemeris and satellite laser ranging (SLR) data, the precision of a comprehensive analytical model has been verified. And the precision of orbit determination is at the decimeter level using this comprehensive analytical SRP model. According to the satellite conservation theorem of angular momentum and change of in-orbit telemetry parameters, the difference between a comprehensive analytical model and the actual in-orbit interference force has been analyzed and calculated. The addition of empirical items on the comprehensive analytical model has been proposed. SLR validations demonstrated that the orbit precision of BDS C08 and C10 can be achieved at 0.078m and 0.084m respectively. Compared with using the improved CODE empirical model, precision orbit accuracy of them has increased by 0.021m and 0.045m respectively.

Key words: BDS satellite; solar radiation pressure; comprehensive analytical model; experience correction item; precise orbit determination