为了保证导弹攻击目标的精确性,根据平面弹道的几何特性,设计了一种输出指令为过载的瞬时圆周制导律。描述了瞬时圆周加速度制导律原理,详细推导了制导方程。利用导弹质心和目标质心的位置及速度信息,得出导弹攻击目标的过载制导指令,并进行了弹道仿真。仿真结果表明,所设计的瞬时圆周加速度制导律不仅能够保证导弹准确命中目标,而且弹道平直。 In order to ensure the accuracy of missile attack targets, an instantaneous circular guidance law is proposed to output the command as overload according to the geometric characteristics of plane trajectory. The principle of instantaneous circular acceleration guidance law is described and the governing equation is deduced in detail. By using the position and velocity information of the missile center of mass and the target center of mass, an overload guidance command for the target of the missile is obtained and ballistic simulation is conducted. The simulation results show that the designed instantaneous circumferential acceleration guidance law can not only ensure that the missile accurately hit the target, but also the trajectory is straight.