固定时间拦截变轨段制导的摄动修正方法

采用航迹角迭代法,讨论了固定时间拦截有限推力初始变轨段的制导问题。通过引入虚拟拦截点,将实际存在各种摄动因素的固定时间拦截初始变轨问题转化到二体理论下讨论。在远距离拦截中,当初始变轨段较短、制导精度又较高时,可大大减小Lambert制导中由于忽略近地轨道的各种摄动因素而引起的等时脱靶量。

Disturbed Modify Method of Fixed-Time Interception's Guidance in Orbit-Change Stage

Guidance problem in initial orbit-change stage of fixed-time interception with limited thrust is discussed,using the iteration of the flyout angle.By introducing the virtual interception point,the problem is discussed based on a two-body theory.In far interception,it can greatly reduce the equal-time miss distance which induced by ignoring the disturbed factors on conditions when the initial orbit-change stage is short and the guidance system is sufficient accuracy.