一种弹间协同的目标察打时间可调制导方法

Missile-cooperation Target Detection and Interception Time Adjustable Guidance Law

针对多弹协同的时间可调集群饱和攻击问题,提出一种弹间方位协同的目标察打时间可调末制导律设计方法。通过设计三阶多项式作为视线转率参考剖面,结合剖面重塑边界约束条件,给出了仅有一个调节参数驱动的多项式参考视线剖面,分析了不同调节参数对察打时间可调约束的影响。针对参考视线剖面精稳跟踪问题,给出了传统扰动抑制的参考剖面鲁棒跟踪制导律作为参考,通过对制导模型进行泰勒展开及增量式扰动降级,设计了扰动增量抑制的小增益强抗扰制导律。考虑到弹间协同方位共享机制,给出了多弹集群被动探测导引头获取弹目相对距离的一般性几何快速估计方法,同时推理了保障估计特性的参考剖面有效参数集求解方法。多场景复杂工况下仿真结果表明,所设计方法能够满足多弹集群时间可调的协同察打飞行任务,且具有小增益强抗扰制导特性。

Aiming at the time-adjustable cluster saturation attack problem of multi-missile coordination,this paper proposes a design method of target detection and interception time-adjustable terminal guidance law with azimuth coordination among missiles.By designing a third-order polynomial as the reference line-of-sight(LOS)rate profile,and combining with reference reshaping boundary constraints,a polynomial reference LOS profile driven by only one adjustment parameter is given,and the influence of different adjustment parameters on the time adjustable constraint is analyzed.For the precise and stable tracking of the reference LOS profile,a conventional disturbance suppression robust tracking guidance law for the reference profile is given as a benchmark.By performing the Taylor expansion and incremental disturbance degradation on the guidance model,a small gain and strong incremental disturbance suppression guidance law is designed.Considering the cooperative azimuth sharing mechanism among missiles,a general geometric fast estimation method for multiple missiles to obtain the relative distance between the missiles and target using the passive detection seeker is given.The simulation results under complex working conditions in multiple scenarios show that the designed method can meet the time adjustable coordinated detection and interception mission for multi-missiles,and maintain the small gain and strong anti-perturbation guidance performance.