空时二维相关非高斯杂波的建模与仿真

Modeling and simulation of space-time two-dimension correlated non-Gaussian clutter

在雷达信号处理中,脉冲之间存在时间相关性,不同距离单元的脉冲还存在空间相关性,因此在杂波建模中必须考虑其空时二维相关性。基于球不变随机矢量的杂波建模方法能够独立控制杂波的幅度概率密度函数和杂波序列相关性,但该方法不能同时描述杂波的空时二维相关性,通过对该方法的分析,给出获得空时二维相关的杂波建模方法,并通过计算机仿真,验证了该方法的有效性。

In radar signal processing,time correlation exists between pulses,and space correlation also exists between pulses of different distance units,so space?time correlation in clutter modeling should be considered. The clutter modeling method based on spherically invariant random vector can control the amplitude probability density function and sequence correlation of clutter respectively,but can′t describe clutter space?time correlation simultaneously. In this paper,the clutter modeling method correlating to space?time two?dimension is given based on the analysis of the proposed method. The validity of the method was verified by computer simulation.