论文部分内容阅读
基于探月工程三期论证中的一条月地返回轨道,分析了影响轨道器和返回器分离点位置计算精度的误差因素,建立了相应的误差协方差传播模型。通过仿真计算,讨论了在不同修正时机下,末次修正控制误差对轨道的影响,给出了分离点位置误差与末次修正后轨道误差之间的关系,对末次修正时机和分离时机的选择与分离点位置误差的关系进行了初步分析,结果表明,适当延后末次修正时间,以及适当提前分离有助于控制分离点位置误差。
Based on a lunar return orbit in the three phases of lunar exploration project, the error factors that affect the accuracy of the orbiter and the reflector separation point location are analyzed, and a corresponding error covariance propagation model is established. Through the simulation calculation, the influence of the last correction control error on the orbit under different correction timings is discussed. The relationship between the position error of the separation point and the last corrected orbit error is given. The selection and separation of the last correction timing and separation timing Point position error were analyzed preliminarily. The results show that proper delay of the last correction time, and the appropriate early separation help to control the position error of the separation point.