信噪比加权空间分集雷达目标检测算法

doi:10.3969/j.issn.1001-2400.2011.04.015

J4 ›› 2011, Vol. 38 ›› Issue (4): 82-88.doi: 10.3969/j.issn.1001-2400.2011.04.015

信噪比加权空间分集雷达目标检测算法

周生华;刘宏伟;刘保昌;尹奎英

(西安电子科技大学雷达信号处理国家重点实验室，陕西西安 710071)

收稿日期:2010-04-30 出版日期:2011-08-20 发布日期:2011-09-28
通讯作者: 周生华
作者简介:(西安电子科技大学雷达信号处理国家重点实验室，陕西西安 710071)
基金资助:
国家自然科学基金资助项目(60901067,601001212);新世纪人才支持计划资助项目(NCET-09-0630);长江学者和创新团队发展计划资助项目(IRT0954);国家部委预研项目、国家部委预研基金、中央高校基本科研业务费专项资金联合资助项目

SNR weighting based target detection algorithm for spatial diversity radar

ZHOU Shenghua;LIU Hongwei;LIU Baochang;YIN Kuiying

(National Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071， China)

Received:2010-04-30 Online:2011-08-20 Published:2011-09-28
Contact: ZHOU Shenghua

摘要/Abstract

摘要：

对于空间分集雷达，各雷达站与目标的距离不同会引起信噪比的不同，从而降低传统的非相干积累检测器的检测性能．基于尼曼-皮尔逊准则，提出一种对各站接收信号进行基于信噪比加权的信号融合检测器．在已知各站回波信噪比的条件下，它可以达到检测性能的上界．数值试验表明，该检测器的检测性能较传统的非相干积累检测器有明显改善，特别在信噪比较低时．

关键词: 雷达目标检测, 空间分集雷达, 信号融合检测, 信噪比加权检测

Abstract:

For a spatial diversity radar, signals received by widely separated radar sites may have different signal-noise-ratios (SNRs) due to different distances between radar sites and target, which would decrease the detection performance of the conventional incoherent accumulating detector (IAD). Based on the Neyman-Pearson criterion, a signal fusion based target detection algorithm is proposed, which weights signals received by different radar sites according to channel SNRs estimated. With channel SNRs of radar sites known, this algorithm achieves the upper bound of the detection performance. Numerical experiments indicate that the proposed algorithm gives a much better detection performance than the conventional IAD, especially when channel SNRs are low.

Key words: radar target detection, spatial diversity radar, signal fusion based detection, detection with SNR weighting

周生华;刘宏伟;刘保昌;尹奎英. 信噪比加权空间分集雷达目标检测算法[J]. J4, 2011, 38(4): 82-88.

ZHOU Shenghua;LIU Hongwei;LIU Baochang;YIN Kuiying. SNR weighting based target detection algorithm for spatial diversity radar[J]. J4, 2011, 38(4): 82-88.

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信噪比加权空间分集雷达目标检测算法

SNR weighting based target detection algorithm for spatial diversity radar

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