【作者】 赵群河； 王小亚； 何冰； 胡小工；

【Author】 Qunhe ZHAO 1,2 ,Xiaoya WANG 1 ,Bing HE 1,2 ,Xiaogong Hu 1 1. Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai,200030,China 2. Graduate University of Chinese Academy of Sciences,Beijing,100049,China

【机构】 中国科学院上海天文台； 中国科学院研究生院；

【摘要】 对于高度在20000~36000km的高轨卫星的精密轨道确定,太阳辐射压摄动由于受卫星姿态及卫星表面材料特征影响难以精确模制,成为卫星定轨和轨道预报最重要的误差源。太阳辐射压对卫星产生的摄动加速度与太阳的辐射强度、卫星的受照面积、受照面与太阳光的几何关系、受照面的吸收和反射特性等因素相关。本文介绍了一种新的建立太阳辐射压摄动模型的方法,该方法利用辐射转移理论,运用相应的物理概念,不同程度的简化卫星本体的构型,通过对太阳辐射场强和辐射流量的计算来求出太阳辐射压摄动,加入锥形地影因子,建立了盒翼形状和精细化结构的理论太阳辐射压模型,并用GPSBlockIIF(PRN1,24,25,27)4颗卫星的观测数据的定轨结果得到了验证。结果表明,与Bern经验模型相比,物理模型对于导航卫星的轨道的定轨精度和预报精度有了相应的提高,定轨精度3D-RMS约为20cm。更多还原

【Abstract】 In the precise orbit determination(POD)of the 20000 ~ 36000 km high-altitude earth orbit satellites, the solar radiation pressure(SRP) perturbation is difficult to precise modeling because of the complicated and changing satellite attitude and surface material characteristics, which is the most important error source in POD and forecast. The satellite perturbation acceleration produced by SRP relates to the solar radiation intensity, illuminated area of the satellite, the geometrical relationship between solar flux and satellites surfaces, the material characteristics of absorption and reflection and so on. This article introduces a new kind of SRP model, using radiation transfer theory and corresponding physical concept, simplified satellite body configuration, calculating SRP perturbation through the solar radiation intensity and flux. Then adding conical shadow factor of earth and moon, a simple box-wing model and fine structure theoretical SRP model are established. At last, the SRP acceleration of the GPS Block IIF satellites is calculated and verified with the date of PRN 1, 24, 25, 27 satellites. The result shows that compared with Bern empirical model, the physical SRP model for POD and forecast on navigation satellite have higher accuracy, the 3D-RMS of orbit is about 20 centimeters.更多还原