摘要
针对北斗三号卫星导航系统(BDS-3)中圆地球轨道(MEO)卫星在地影期因太阳光压(SRP)模型适用性降低导致的精密定轨精度退化问题,提出了一种适用于地影期的组合光压模型构建方法。该方法结合卫星姿态信息,通过精密星历动力学拟合参数振幅与参数相关性分析实现模型参数精简,并辅以先验模型进行补偿,对拓展欧洲定轨中心(CODE)轨道模型1和2的组合模型(ECOMC)进行精化。实验结果表明,相较于传统的13参数ECOMC模型,组合光压模型显著提升了卫星地影期定轨精度。以武汉大学(WHU)、CODE最终精密星历为参考值时,对于中国空间技术研究院(CAST)研制的MEO卫星径向精度分别提升21.22%、26.09%,法向精度分别提升10.87%、28.52%,切向精度相近;对于上海微小卫星工程中心(SECM)研制的MEO卫星径向精度分别提升15.60%、17.76%,法向精度分别提升16.51%、20.37%,切向精度相近;且使用组合光压模型后,两类卫星激光测距检核精度均得到改善。
Aiming at the degradation of precise orbit determination(POD)accuracy of Beidou-3 Satellite Navigation System(BDS-3)Medium Earth Orbit(MEO)satellites during the eclipse seasons due to the reduced applicability of the solar radiation pressure(SRP)model,a method for constructing a combined SRP model tailored for the eclipse seasons is proposed.This method refines the Extend Center for Orbit Determination in Europe(CODE)orbit model 1 and 2 combined(ECOMC)model by integrating satellite attitude information,streamlining model parameters through amplitude analysis of dynamical fitting parameters from precise ephemerides and correlation analysis,with supplemental compensation from a priori model.Experimental results indicate that compared to the traditional 13-parameter ECOMC model,the combined SRP model significantly enhances POD accuracy during the eclipse seasons.When using Wuhan University(WHU)and CODE's final precise ephemeris as reference values,the radial precision of China Academy of Space Technology(CAST)MEO satellites is improved by 21.22%and 26.09%,the cross-track accuracy is improved by 10.87%and 28.52%,while the along-track accuracy remains similar.For Shanghai Engineering Center for Microsatellites(SECM)MEO satellites,the radial precision is improved by 15.60%and 17.76%,and the cross-track accuracy is improved by 16.51%and 20.37%,while the along-track accuracy remains similar.The accuracy of both types of satellite laser ranging(SLR)is improved by using the combined SRP model.
作者
李慧
高子恒
陆希铁
王仁龙
刘学
LI Hui;GAO Ziheng;LU Xitie;WANG Renlong;LIU Xue(College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《中国惯性技术学报》
北大核心
2025年第6期577-586,共10页
Journal of Chinese Inertial Technology
基金
国家重点研发计划(2021YFB3901300)
国家自然科学基金(62403158)
中央高校科研业务费(3072024LJ0405)。
