重点考察了月球重力场误差、观测量精度、初始时刻的先验轨道误差以及观测资料类型等对环月飞行器定轨精度的影响。
Especially, the effects of lunar gravity, observation accuracy, orbital error and observation data types on the orbital determination accuracy of the lunar orbiter have been carefully investigated.
拦截器在飞行过程中轨控推力以持续定常方式或小脉冲方式施加在垂直视线的方向，目标具有一定的机动能力。
The interceptor had sustain constant thrust or impulsive thrust perpendicular to the line-of-sight during the flight, and the target was maneuverable.
基于定轨误差、轨道控制误差和轨道预报误差的调相时间分析，制定了目标飞行器调相控制策略。
Based on the target's phasing time analysis of orbit determination error, orbit control error and orbit prediction error, the strategy of the target's phasing orbit maneuver was developed.
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