【作者】 孙国健； 赵琳； 李慧； 王仁龙； 陆希铁；

【Author】 Sun Guojian;Zhao Lin;Li Hui;Wang Renlong;Lu Xitie;College of Intelligent Systems Science and Engineering, Harbin Engineering University;Harbin Engineering University Qingdao Ship Science and Technology Co.LTD;

【机构】 哈尔滨工程大学智能科学与工程学院； 哈尔滨工程大学青岛船舶科技有限公司；

【摘要】 太阳光压是导航卫星精密定轨的主要误差源,受到卫星几何结构、表面材料属性等因素影响。当前北斗太阳光压模型适用性分析多以北斗二号卫星为研究对象,而北斗二号和三号卫星基本参数差异明显,应用于北斗二号卫星的太阳光压模型在北斗三号上适用性尚不明确。本文比较了6种常用经验型光压模型对北斗三号MEO卫星定轨适用性。结果表明:相比ECOM1(9参数)模型,CAST卫星采用ECOM1(5参数)、ECOM1(7参数)、ECOM2(D4B1)、ECOMC模型定轨的估计1DRMS依次提升33%、17%、45%、46%,ECOM2(D2B1)的定轨估计1DRMS下降4%。SECM卫星采用ECOM1(5参数)、ECOM1(7参数)、ECOM2(D2B1)、ECOM2(D4B1)、ECOMC模型的定轨估计1DRMS依次提升39%、29%、48%、49%、53%。对于CAST卫星,相比ECOMC模型,使用ECOM2(D4B1)模型定轨估计径向精度提升23%,考虑用户距离误差影响,轨道估计推荐采用ECOM2(D4B1)模型;对于SECM卫星轨道估计推荐采用ECOMC模型。24小时轨道预测中,SECM和CAST卫星使用ECOMC模型1DRMS分别为12.9cm和12.3cm,在6种模型中精度最高,轨道预测推荐使用ECOMC模型。更多还原

【Abstract】 The solar radiation pressure is the main source of error in the precision orbit determination of navigation satellites. The comparison and analysis of solar radiation pressure models mostly use BDS-2 satellite as the research object. The basic parameters of the BDS-2 and BDS-3 satellites are significantly different. The applicability of the solar radiation pressure model applied to the BDS-2 satellite on the BDS-3 is not clear. Therefore, this paper compares the applicability of six commonly used empirical solar radiation pressure models to the BDS-3 MEO satellite orbit determination. The results show that compared with the ECOM(9 parameters) model, for the CAST satellite, the 1 DRMS accuracy of the ECOM1(5 parameters),ECOM(7 parameters), ECOM(D4 B1), and ECOMC models are increased by 33%, 17%, 45%, and 46%, and the 1 DRMS accuracy of the ECOM(D2 B1) model is reduced by 4%. Compared with the ECOM(9 parameters) model, for the SECM satellites, the 1 DRMS accuracy of the ECOM1(5 parameters), ECOM1(7 parameters), ECOM2(D2 B1), ECOM2(D4 B1), and ECOMC models are increased by 39%, 29%, 48%, 49%,and 53% respectively. For SECM satellites, the ECOMC model is recommended; for CAST satellites,compared to the ECOMC model, the ECOM2-9 model has a radial increase of 23%. Considering the effect of user space ranging errors, the ECOM2-9 model is recommended for CAST satellites. In the 24-hour orbit prediction, the SECM and CAST satellites use the ECOMC model with 1 DRMS of 12.9 cm and 12.3 cm,respectively, which have the highest accuracy among the six models. The ECOMC model is recommended for orbit prediction.更多还原