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提出在大气层外动能拦截器上引入激光测距仪提供距离信息,与导引头信息融合获得速度信息进而估计零效脱靶量(Zero Effort Miss,ZEM),并将其用于末制导。设计的零效脱靶量制导律仅使用一次常规常值力修正,而后以带记忆功能的时变阶梯式参量为门限进行脉冲修正,对拦截器进行制导。该导引律既发挥了常规零效脱靶量制导节省燃料的优点,又具备比例导引高精度的优势,同时开机门限的设定充分考虑了发动机的实际特性,避免了交替对开与重复开启,具有工程实用价值。仿真结果验证了其在精度和燃料消耗方面的性能。
It is proposed that a laser range finder be introduced to provide distance information on the ECOF interceptors, and the speed information is obtained by fusion with the seeker information so as to estimate the Zero Effort Miss (ZEM) and use it for the final guidance. The designed zero-crossing miss guide uses only one conventional normal force correction, and then uses the time-varying stepwise parameter with memory as the threshold for pulse correction to guide the interceptor. The guidance law not only play the advantages of traditional zero-miss guide guidance fuel economy, but also has the advantages of high-precision proportional guidance, while the boot threshold set fully take into account the actual characteristics of the engine to avoid the alternating on and off repeatedly , With engineering practical value. Simulation results verify its performance in terms of accuracy and fuel consumption.