一种快速的矢量脱靶量测量算法

Measurement of Vector Miss Distance Based on LFM Signal Model

为了满足一些矢量脱靶量测量系统实时性的要求,提出了一种快速的矢量脱靶量测量算法。测量中使用了一个小型天线阵列,基于快速傅里叶变换算法,雷达回波的多普勒频率和不同天线接收信号的相位差能够快速地被估计出来,进一步利用非线性优化的方法估计出目标的矢量脱靶量参数。计算机仿真结果表明,该方法原理正确,能够满足实时要求。

In order to meet the real-time demands of some vector miss distance mesurement systems,a fast vector miss distance estimation algorithm is presented in this paper.A small antenna array is used for measuring the movement of a target.Based on fast Fourier transform,Doppler frequency and phase error of the signals received by different antennas can be estimated by this algorithm quickly,furthermore,curve fitting method is used to get the complete set of the target motion parameters.Simulation results indicate that the principle of the method is correct and can meet the real-time demands.