基于光压宏观模型的导航卫星地基定轨研究

摘要

导航卫星的精确轨道确定对于导航系统的应用具有重要的作用,建立准确合理的力学模型有助于导航卫星的精确轨道确定.采用了光压宏观模型描述了卫星受力中的光压模型问题,分析了光压宏观模型的数学模型,研究了地基定轨的理论方法,并建立了地基定轨的可见性分析模型,通过采用积分滤波的分析方法,分别研究了基于光压模型与基于球形模型,对GEO(geostationary earth orbit)、MEO(mediumearth orbit)及IGSO(inclined geosynchronous orbit)卫星地基定轨的影响,通过仿真证明了光压宏观模型的应用对于3类卫星的定轨精度有明显的提高.%Precise orbit determination for navigation satellite has an important role in navigation systems of the application. An accurate and reasonable mechanical model helps to precise orbit determination of navigation satellites. In this paper, a macroscopic model describes the light pressure force in the satellite model of light pressure problem, analyzes the light pressure of the mathematical model of the macro model to study the foundations of the theory of orbit determination methods, and establishes a foundation orbit visibility analysis model. Filtering by using integral method of analysis, based on light pressure model and spherical model, the influence on the GEO, MEO and IGSO orbit satellite ground are studied. Through the simulation, it shows that the application of light pressure for the three types of macromodel satellite orbit determination accuracy has been significantly improved.