复合高斯杂波环境中分布性目标相干雷达恒虚警检测算法研究  

CFAR detection algorithms of distributed targets in compound-Gaussian clutter with coherent radar

作　　者：刘立东[1,2] 吴顺君[2] 雷晓亮[3] 

机构地区：[1]中电科技集团28所C4ISR技术国防科技重点实验室 [2]西安电子科技大学雷达信号处理国家重点实验室 [3]西安电子科技大学电子工程学院

出　　处：《电路与系统学报》2007年第3期1-5,共5页Journal of Circuits and Systems

基　　金：国防预研基金(00J7.2.8.DZ0152)

摘　　要：本文研究了在未知统计特性的复合高斯杂波环境中对分布性目标检测的问题。利用Toeplitz矩阵的次对称性提出了一种新的杂波协方差矩阵结构的估计方法,并用此估计方法来实现基于广义似然比检验的恒虚警检测算法。该算法能够在不需要杂波功率谱密度对称的情况下作到对杂波的结构分量和协方差矩阵都有恒虚警的性质,而且该实现方法的检测性能优于先前提出的实现方法。This paper deals with adaptive detection of distributed targets for the coherent radar in compound-Gaussian clutter background with unknown statistical properties. By exploiting the persymmetry property of toeplitz covariance matrix, we propose a new method of covariance matrix estimation to implement constant false alarm rate （CFAR） detection algorithm based on GLRT. Without needing the symmetric clutter power spectral density, the proposed detection algorithm ensures CFAR with respect to both the clutter covariance matrix as well as the statistics of the texture. It is shown that the proposed method outperforms the previously proposed one.

关 键 词：复合高斯 分布性目标 恒虚警 次对称性 

分 类 号：TN957.51[电子电信—信号与信息处理]