摘要
在大气层外远距离拦截中,基于二体理论的Lambert制导方法可以用于固定时间拦截的初始变轨段制导,但由于实际存在的各种轨道摄动因素影响,会产生较大拦截偏差。提出一种基于微分改正算法的Lambert拦截摄动修正方法,在初始变轨制导段补偿轨道摄动因素对零控脱靶量的影响,以避免在末制导段进行过大的偏差修正。仿真结果表明,该摄动修正方法合理、有效,可以在只增加较少燃料消耗的情况下,快速进行初制导修正,大大提高远距离拦截的制导精度。
The Lambert interception based on the two-body theory can be used to design the initial guidance for an exoatmospheric fixed-time interception. But in far interception, there is large deviation caused by disturbed factors. The perturbation correction method for Lambert interception based on differential corrector was proposed, which can compensate the large zero effort miss caused by perturbation in the initial guidance law. The simulation results show that the perturbation correction method is rational and efficient, and the guidance accuracy of long distance interception can be greatly improved with an extra little fuel consuming.
出处
《弹箭与制导学报》
CSCD
北大核心
2009年第5期87-90,94,共5页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
国家自然科学基金(10573041)
国家863基金(2007AA12Z308)资助
关键词
Lambert拦截
初制导
零控脱靶量
摄动修正
Lambert interception
initial guidance
zero effort miss
perturbation correction
