基于双圆弧原理的协同制导律研究

为了突破舰艇配备的近程防御武器系统，反舰导弹需对攻击时间与攻击角度进行协同制导，以实施饱和攻击。文章基于双圆弧原理提出了一种多导弹攻击时间与攻击角度协同制导律。首先，采用双圆弧原理规划导弹的航路，将导弹导引到预定的攻击角度上。然后，根据待飞直线距离对待飞时间进行估算，求出预测时间误差，确定导弹按照特定的圆弧轨迹机动飞行的指令和机动飞行的时间，通过机动飞行来对时间误差进行补偿。最后，再利用所设计的导引律导引导弹攻击目标。

Research on Cooperative Guidance for Multi-Missiles Based on Bi-Arcs

The impact time and the impact angle control laws are employed to carry out a salvo attack for anti-ship missiles against CIWS （close-in weapon system）. A new cooperative guidance based on bi-arcs to control impact time and impact angle for multi-missiles was proposed in this paper. Firstly, the missile was guided to the expected impact angle by bi-arcs, and the time-to-go was estimated according to the range-to-go. Secondly, the accelerations and time periods for missile maneuver along specifically designed circular arcs were determined according to the impact time error which was then compensated by the determined maneuver. Finally, the missile was guided to impact the target by the designed guidance laws.