捷联激光制导弹药末段全弹道目标捕获仿真

Simulation on target acquisition of strapdown laser guided munitions in whole terminal trajectory

针对增程单兵火箭弹由于弹道低伸和末段弹道时间短的弹道特点对激光末段制导形成的局限,研究捷联激光制导导引头在末段全弹道上的目标捕获域和目标捕获率。建立低伸弹道上激光半主动导引头目标捕获域模型,在不同的火箭弹发射角条件下,对导引头在末段全弹道上的目标捕获域与最小锥形视场进行仿真,分析最小目标捕获域边界由双曲线变为椭圆时的弹道点和视场角,得到导引头的最佳半视场角为5.9°。考虑弹道扰动的影响,通过蒙特卡罗方法计算末段弹道上不同弹道点的导引头目标捕获率,得到在弹道上导引头的最佳起始探测弹道点。为增程单兵火箭弹的制导化提供参考。

Considering the limitations of low and extended trajectory and short terminal trajectory on laser terminal guidance of range extend individual rocket, the target acquisition domain and target acquisition probability of the strapdown laser guidance seeker in the whole terminal trajectory were researched. A model of target acquisition domain for semi-active laser seeker in low and extended trajectory was established. The target acquisition domain and the minimum cone field of the seeker in the whole terminal trajectory were simulated under the condition of different rocket fire angles. The position in terminal trajectory and the minimum half field angle when target acquisition domain boundary changing from hyperbolic to ellipse were analyzed, and the optimum half field angle was 5.9°. Considering the influence of trajectory disturbance, the target acquisition probability of the seeker at different positions in terminal trajectory were calculated, and the optimum initial detection point of missile seeker in terminal trajectory was established by means of Monte Carlo method. The limitations of low and extended trajectory and short terminal trajectory on laser terminal guidance of individual rocket were solved. The reference for guidance of the extended range rocket projectile was provided.