中国空间科学技术2024，Vol.44Issue(4)：111-118,8.DOI:10.16708/j.cnki.1000-758X.2024.0062
小行星探测器轨道计算的动力学研究
Dynamics of asteroid probe orbit calculation
摘要
Abstract
The problem of orbit calculation dynamics in the upcoming asteroid exploration missions of China is studied.The demand of asteroid probe orbit calculation is analyzed,and the space-time reference system involved in asteroid orbit calculation is described,then the dynamical models to be considered in orbit calculation are discussed.The calculation formulas of various types of perturbation acceleration are given.The largest force model is the gravitational acceleration of the Sun,with magnitude about 10-6km/s2,and the smallest is the asteroid body perturbation acceleration which is about 10-12～10-13km/s2.The difference between ephemeris of Rosetta provided by ESA and that integrated from the dynamical model in this paper shows that the four-day arc segment position error is about 15 m,velocity error is about 0.44 mm/s,so the accuracy of the dynamical model is reliable.The above study can provide a reference for the orbit calculation of China's asteroid exploration missions.关键词
小行星探测/时空参考系/轨道计算/动力学模型/引力场/轨道摄动Key words
asteroid exploration/space-time reference system/orbit calculations/dynamical models/gravitational field/orbit perturbation分类
航空航天引用本文复制引用
王宏,鄢建国,樊敏,李海涛..小行星探测器轨道计算的动力学研究[J].中国空间科学技术,2024,44(4):111-118,8.基金项目
天问二号小行星探测工程 （）
国家自然科学基金(U1831132) （U1831132）
