ECOM系列光压模型在精密定轨中的适用性分析  

Applicability Analysis of ECOM Solar Radiation Pressure Models in Precise Orbit Determination

作　　者：宋秉红 杨建华 SONG Binghong;YANG Jianhua(Lanzhou Urban Construction Design and Research Institute Co Ltd,875 East-Nanbinhe Road,Lanzhou 730050,China)

机构地区：[1]兰州城市建设设计研究院有限公司,兰州市730050

出　　处：《大地测量与地球动力学》2025年第3期290-296,共7页Journal of Geodesy and Geodynamics

摘　　要：太阳光压摄动作为在轨导航卫星受到的最大非保守力,是卫星精密定轨的重要误差源,而目前多数光压模型是针对全球定位系统(GPS)卫星而建立的,对北斗三号(BDS-3)卫星精密定轨的适用性分析较少。本文借助MGEX观测数据对5种欧洲定轨中心拓展轨道模型(ECOM1-9、ECOM1-7、ECOM1-5、ECOM2、ECOMC)太阳光压模型进行定轨实验。结果表明,不同厂商研制的卫星对光压模型的适用性不同,对中国空间技术研究院(CAST)研制的卫星而言,ECOMC模型在径向、切向和法向均表现出最优适用性;对上海微小卫星工程中心(SECM)研制的卫星而言,径向、切向和法向分别为ECOM1-5、ECOMC、ECOMC模型精度最佳;对三维整体而言,CAST卫星和SECM卫星定轨均推荐采用ECOMC模型;从24 h预测结果来看,对于CAST卫星,ECOM1-9、ECOM1-7、ECOM1-5、ECOM2、ECOMC模型24 h预测精度分别为23.3 cm、20.6 cm、17.2 cm、21.8 cm、10.4 cm,对于SECM卫星,各模型预测精度分别为25.7 cm、19.1 cm、15.9 cm、12.9 cm、11.9 cm。The solar pressure perturbation,as the largest non-conservative force experienced by in-orbit navigation satellites,is an important error source for precise orbit determination.Currently,most solar radiation pressure models are established for global positioning system(GPS)satellites,and there is relatively little adaptability analysis of solar radiation pressure models for precise orbit determination accuracy of Beidou-3(BDS-3)satellites.We use observation data from the multi-GNSS experiment(MGEX)to conduct orbit determination experiments based on five solar radiation pressure models,including ECOM1-9,ECOM1-7,ECOM1-5,ECOM2,ECOMC.The results show that the applicability of solar radiation pressure model varies for satellites developed by different manufacturers.For satellites developed by China Academy of Space Technology(CAST),the ECOMC model exhibits optimal applicability in radial,tangential,and normal directions.For satellites developed by Shanghai Engineering Center for Microsatellites(SECM),the radial,tangential,and normal directions have the best accuracy for ECOM1-5,ECOMC,and ECOMC models,respectively.For 3D entirety,the ECOMC model is recommended for orbit determination of both CAST and SECM satellites.From the 24-hour prediction results,for CAST type satellites,the accuracy of ECOM1-9,ECOM1-7,ECOM1-5,ECOM2,and ECOMC models is 23.3 cm,20.6 cm,17.2 cm,21.8 cm,and 10.4 cm,respectively.For SECM type satellites,the accuracy is 25.7 cm,19.1 cm,15.9 cm,12.9 cm,and 11.9 cm,respectively.

关 键 词：全球卫星导航系统 太阳光压 几何结构 定轨参数 

分 类 号：P228[天文地球—大地测量学与测量工程]