不同型号卫星的光压模型参数的拟合  

The Fitting Parameters of Different Types of Satellite SRP

作　　者：刘永[1] 李姗姗[1] 张传定 王琰[1] 

机构地区：[1]信息工程大学,河南郑州450001 [2]北京卫星导航中心,北京100094

出　　处：《测绘科学技术学报》2016年第1期33-37,共5页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金项目(41174026)

摘　　要：随着GPS卫星型号的不断更新,目前共存在8种型号的卫星。每一种型号卫星的材质不尽相同,关于卫星的光压模型也略微不同。探究了不同型号卫星在body-fixed坐标系下光压加速度分量关于B角的约函数模型;利用IGS提供的精密星历,通过动力学轨道平滑过程来拟合8 d的数据,生成在solar-oriented坐标系下的加速度;把加速度在solar-oriented坐标系D-Y-B轴的分量转换到在body-fixed坐标系X-Y-Z轴分量;利用最小二乘法则拟合关于B角的约函数模型,建立关于B角的不同型号卫星的傅里叶光压模型,并进行轨道的外推。通过分析轨道外推的精度,验证GPS不同型号卫星光压模型拟合的精准性,为以后北斗卫星的光压建模提供理论依据。Along with the continuous renewal of GPS satellite, there are 8 types of satellite. The satellite＇smaterial is not the same, at the same time, the radiation model on satellite is also slightly different. The different types of satellites in body-fixed coordinate system of B angle solar pressure acceleration about function modelare explored.The precise ephemeris is provided by IGS, to fit the data of 8 days through the dynamic orbit smoothing process.The accelerationis generatedin the body-fixed coordinates, and then converted to X-Y-Z component in body-fixed coordinate system from the solar-oriented coordinates of D-Y-B axis components. Using the least squares fitting principle about function model on B angle, itestablished the Fourier SRP model of different types of satellite on the B angle, then used the software to track extrapolation, analyzed of orbit extrapolation accuracy, verified accuracy of different types of GPS satellite radiation model fitting, and provided a theoretical basis for radiation modeling after Beidou satellite.

关 键 词：solar-oriented坐标系 body-fixed坐标系 最小二乘法则 约函数模型 轨道外推 

分 类 号：P228[天文地球—大地测量学与测量工程]