利用卫星制导远程机载导弹的几个问题

Concept Research on Long Range Airborne Missile guided by Satellite

利用卫星制导远程机载导弹,在时间匹配性要求下,降低卫星轨道高度并不能解决雷达探测距离不足的问题,需要利用卫星组网技术解决。在雷达探测距离足够远时,也可以采用椭圆回归轨道,给出了轨道设计方法。为了使用星载雷达测量的数据,需要解决不同平台的对准问题。通过计算机数值仿真,研究了纯惯性制导下中制导产生的导引头指向误差,在当前技术条件下,最主要的影响因素是初始对准误差,仿真表明利用星载雷达测量的导弹位置,采用卡尔曼滤波的方法,可以不断修正导弹的位置误差,提高导引头的指向精度。

The position of missile and attacked target is tracked by radar located on satellite instead of on airplane, the airplane is only take a role as a transportation tool. In the case of radar detection distance is not enough, lower the orbit altitude is useless, several satellites in near earth circle orbit is needed which fly through same trace on ground one by one. An elliptical regress orbit is also works if the detection distance of radar is large enough. The guidance satellite orbit design method is given. The accuracy of radar data from satellite is determined by the calibration technique of different inertial platform. The pointing error of terminal sensor is calculated by computer simulation. The results show that the initial align bias is the most important error source of inertial navigation system. The missile position error could be corrected by radar data from satellite through Kalman filter and it is helpful to reduce the pointing error.