GPS卫星光压摄动建模发展与启示

Modeling and Analysis of Solar Radiation Pressure for GPS Satellites

对中高轨道的导航卫星而言,光压摄动模型误差是目前导航卫星动力学模型最大的误差源,因此,需要对光压摄动进行分析并精确建模。文章按照光压涉动建模原理的不同,研究分析了GPS卫星光压模型随工程需求的发展过程、建模方法的改进以及最新的建模方法,比较了不同建模方法下光压摄动模型的工程应用特点,提出了建立适用于北斗导航卫星姿态控制规律的高精度光压摄动模型有待研究的问题,以上内容可为北斗卫星精密定轨与轨道预报工作提供借鉴。

In order to improve the precision of orbit determination and prediction, satellite dynam ic model is needed as accurate as possible. For the medium earth orbit navigation satellite, the solar radiation pressure （SRP） model is the major uncertainty error in the dynamic model, so it is necessary to construct SRP model precisely. This paper according to the differences of modeling theory, analyses the development of SRP models of GPS satellites with engineering requirements, the improvement of modeling method and the lastest approaches, and compares the features of en- gineering application of the different SRP models. Based on the assessment of literature survey, a suggestion on modeling precise SRP model fitting with attitude control law of COMPASS is proposed, which provides a reference of establishing SRP model for COMPASS precise orbit determi- nation and prediction.