摘要
对上海天文台火星探测器定轨软件的动力学模型进行优化和升级,开发形成了MarsODP V2.0,该软件可以处理多种类型测量数据。对火星进行高精度动力学建模,考虑火星本身特性,增加了火卫一和火卫二的三体摄动、火星大气阻力摄动以及多种火星定向模型优化等。利用MEX实测数据比较了优化前后的火星定轨软件的定轨精度,计算结果表明,动力学模型优化后,定轨精度明显提升,与参考轨道的位置差异和速度差异减小;利用实测数据对美国MRO探测器进行精密定轨并验证软件优化后定轨精度。对“天问一号”探测器环火轨道进行定轨计算分析。
In this paper,the dynamic model of Mars probe orbit determination software of Shanghai Observatory is optimized and upgraded,which can process various types of measurement data and carry out high-precision dynamic modeling of Mars.Considering the characteristics of Mars,the three body perturbation model of Phobos and Demos,the Mars atmospheric drag perturbation and the optimization of various Mars pointing models are added.The MEX orbit determination results using different softwares are compared.The calculation results show that the orbit determination accuracy is significantly improved after the optimization of dynamic models,the position difference decreased from more than 300 m to about 10 m,and the velocity difference decreases from about 0.1 m/s to 0.001 m/s;The orbit determination result of MRO probe shows that the residual error of the slope two-way Doppler data with 1 s integration time is about 0.5~0.6 mm/s,and the positon difference between the calculated orbit and the NASA reconstructed orbit is less than 30 m,and the difference of velocity is less than 0.03 m/s;The orbit determination of parking orbit of Tianwen-1 probe shows that the position accuracy of 6~10 d arc length can be better than 300 m,in which the R direction is better than 120 m,and the error is mainly in the T direction;The velocity accuracy is better than 0.035 m/s,which can meet the scientific research index.
作者
单荃
李培佳
樊敏
黄勇
杨鹏
SHAN Quan;LI Pei-jia;FAN Min;HUANG Yong;YANG Peng(Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shanghai Key Laboratory of Space Navigation and Positioning Techniques,Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;Key Laboratory of Planetary Sciences,Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;Beijing Institute of Tracking and Telecommunications Technology,Beijing 100094,China)
出处
《天文学进展》
CSCD
北大核心
2023年第2期279-291,共13页
Progress In Astronomy
基金
国家重点研发计划(2020YFC2200903)
航天飞行动力学技术重点实验室基金(KGJ6142210200201)
中国科学院战略性先导科技专项(XDA30000000)
科工局民用航天技术预先研究项目(D010105)
国家重点研究计划“协同精准定位项目”(2016YFB0501900)
上海市科学技术委员会(12DZ2273300)
