基于迭代对消的外辐射源雷达目标检测方法

周子铂; 王彬彬; 张朝伟; 刘建卫; 徐颖鑫; 王志会

引用本文:	周子铂, 王彬彬, 张朝伟, 刘建卫, 徐颖鑫, 王志会. 基于迭代对消的外辐射源雷达目标检测方法[J]. 雷达科学与技术, 2022, 20(5): 555-564.[点击复制]
	ZHOU Zibo , WANG Binbin , ZHANG Chaowei, LIU Jianwei, XU Yingxin, WANG Zhihui. Target Detection Method Based on Iteration Elimination in Passive Bistatic Radar[J]. Radar Science and Technology, 2022, 20(5): 555-564.[点击复制]

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基于迭代对消的外辐射源雷达目标检测方法
周子铂, 王彬彬, 张朝伟, 刘建卫, 徐颖鑫, 王志会
1．空军预警学院，湖北武汉 430019;2．海军工程大学，湖北武汉 430033

摘要:

本文介绍一种外辐射源雷达目标检测中的杂波抑制算法，该算法首先将源自轨道卫星的连续波观测信号重构为观测矩阵，并对观测矩阵进行奇异值分解，利用迭代的方式将大奇异值对应的杂波成分逐渐从观测矩阵中减去，进而实现观测信号中强烈杂波的对消。在杂波消除过程中，最佳迭代阶数由熵变的最小值确定。然后对杂波消除之后的观测矩阵进行相干积累进而实现微弱目标检测。最终的仿真实验结果验证了本文所提方法的有效性和鲁棒性，并且本方法相较于经典的扩展相消算法具备更低的计算量。

关键词: 外辐射源雷达奇异值主成分相干积累熵变

DOI：DOI:10.3969/j.issn.1672-2337.2022.05.012

分类号:TN957.51；TN958.97

基金项目:

Target Detection Method Based on Iteration Elimination in Passive Bistatic Radar

ZHOU Zibo , WANG Binbin , ZHANG Chaowei, LIU Jianwei, XU Yingxin, WANG Zhihui

1. Air Force Early Warning Academy, Wuhan 430019, China;2. Naval University of Engineering, Wuhan 430033, China

Abstract:

A clutter suppression method based on principal component elimination for passive bistatic radar (PBR) is proposed in this paper. This method achieves strong clutter suppression by constructing surveillance matrix, and the strong clutter principal component is subtracted by means of iterations. Then the coherent integration is implemented to realize target detection. During the iterations, the minimum entropy variation rate is applied to search the optimal target detection result. Simulation results prove the effectiveness and robustness of the proposed method, as well as less calculation complexity than classic extended cancellation algorithm.

Key words: passive bistatic radar(PBR) singular value principal component coherent integration entropy variation rate