一种适用于空间对称线阵的泄漏目标检测方法  

A Detection Method with Spillover of Energy Based on a Symmetrically-spaced Linear Array

作　　者：闫林杰 王天琪 郝程鹏[1] 侯朝焕[1] YAN Linjie;WANG Tianqi;HAO Chengpeng;HOU Chaohuan(Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院声学研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《弹箭与制导学报》2021年第4期61-64,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金(61971412);国家自然科学基金青年基金(61701489)资助。

摘　　要：针对部分均匀高斯杂波背景下点目标的检测和距离估计问题,基于修正的两步广义似然比准则(两步GLRT)提出了一种适用于空间对称线阵的泄漏目标检测方法。该方法通过对目标能量泄漏采样模型和干扰协方差矩阵斜对称特性的联合使用,有效降低计算复杂度和辅助数据需求量。仿真结果表明,在辅助数据数量不足的情况下,该方法比同类型检测方法有更高的目标检测性能和目标距离估计精度。In this paper,aiming at the point-like targets detection problem in a partially homogeneous Gaussian clutter environment,a detection method with spillover of target energy based on a symmetrically-spaced linear array is developed relying on the modified two-step generalized likelihood ratio test(two-step GLRT)criterion.Through the combination of the spillover of target energy and the persymmetric property of interference covariance matrix,this method can effectively reduce the computational complexity and the requirement of auxiliary data.Simulation results show that this algorithm guarantees superior detection performance and target range estimation accuracy with respect to its competitors in auxiliary samples starved environment.

关 键 词：修正的两步GLRT准则 斜对称特性 目标能量泄漏 点目标检测 部分均匀环境 

分 类 号：TN957.51[电子电信—信号与信息处理]