摘要
反导防御系统中,拦截弹在天基红外低轨卫星信息引导下拦截弹道导弹目标时,需要考虑卫星的跟踪能力与拦截弹的拦截能力的匹配问题。首先,采用后验克拉美罗限的方法计算低轨卫星跟踪弹道导弹目标的能力,接着采用椭圆轨道线性化方程的方法计算预测弹道的误差,在目标预测弹道及拦截弹飞行性能的基础上建立预测命中点及其误差的计算方法,然后采用均匀点火策略分析预测命中点精度对拦截弹中段飞行修正能力的影响,通过可信性理论计算得到拦截弹的末段修正能力,最后通过仿真得到满足拦截弹中末段修正能力需求的低轨卫星的技术指标要求。
In anti-missile defense system, when the interceptor intercepts ballistic missile targets under spacebased infrared loworbit satellite information guidance, the matching problem about the satellite tracking ability and the interceptor’s intercepting ability need to be considered. Firstly, the ability of satellite tracking ballistic missile targets is calculated using the method of posterior CramerRao lower bound. Then error of trajectory is predicted by the elliptic orbit linearization equation. Based on the target’s prediction trajectory and the interceptor’s flight performance, the calculation method of predict intercept point and its error is established. The effect of predict intercept point error on the interceptor’s midcourse flight modification ability is analyzed by the uniform ignition strategy. The interceptor’s endgame flight modification ability is calculated by the credibility theory. Finally, the technical requirement for loworbit satellites that meet the interceptor’s midcourse and endgame flight modification ability is obtained by simulation.
作者
刘锦昌
黄树彩
赵炜
庞策
黄达
LIU Jinchang;HUANG Shucai;ZHAO Wei;PANG Ce;HUANG Da(Air and Missile Defense College,Air Force Engineering University,Xi’an 710051,China)
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2018年第8期1777-1785,共9页
Systems Engineering and Electronics
基金
国家自然科学基金(61573374)
国家自然科学基金青年科学基金项目(61503408)资助课题
关键词
低轨卫星
后验克拉美罗限
预测命中点误差
修正能力
low earth orbit （LEO） satellite
posterior Cramer-Rao lower bound
predict intercept point error
modification ability
