一种高精度的获取导弹脱靶量的方法

A PRECISE METHOD FOR OBTAINING MISS DISTANCE

本文以雷达接收到的多卜勒信息为依据,应用现代控制理论知识,推导了一种新的导弹脱靶量的获取方法:参数辨识法。它利用了导弹和目标相对运动产生的多卜勒效应,建立起关于脱靶参量与多卜勒周期数的线性方程。应用参数识别的办法,对脱靶参数进行辨识,它解决了其它方法未能克服的问题:因体目标效应所产生的多卜勒频率的起伏噪声对估值精度的影响。在此基础上,又推导了一种克服噪声相关性的改进算法。仿真结果表明,本文的算法是很有效的。

Based on the doppler information received by radars and modern control theory, a new method of parameter identification method has been presented in the paper. With utlizing doppler effect caused by relative motion of missile and target, a linear equation combing miss distance parameter and the number of doppler frequency cycles was established, and then miss distance can be estimated by using slutistic estimation method. By the use of the method, what a problem with other algorithms unable to handle could be resolved: the effect of doppler frequency fluctuation noise caused by the bulk target effect during interception period of missile and target on the estimation accuracy of miss distance. Furthermore, a improved method has also been derived out in order to eliminate the effect of coherent noise. Finally, computer simulation results has been proven validity of the method.