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Robust detector for range-spread targets in non-Gaussian background

查看全文 作  者:Tao [1]Jian;You [1]He;Feng [1]Su;Dianfa [1]Ping;Xiaodong [1]Huang 高影响力作者 机构地区:[1]Research Institute of Information Fusion,Naval Aeronautical and Astronautical University,Yantai 264001,P.R.China高影响力机构 出  处:《Journal of Systems Engineering and Electronics》索引2012年第23卷第3期,共9页高影响力期刊 基  金:supported by the National Natural Science Foundation of China (61102166);the Scientific Research Foundation of Naval Aeronautical and Astronautical University for Young Scholars (HY2012) 摘  要:Based on the target scatterer density,the range-spread target detection of high-resolution radar is addressed in additive non-Gaussian clutter,which is modeled as a spherically invariant random vector.Firstly,for sparse scatterer density,the detection of target scatterer in each range cell is derived,and then an M/K detector is proposed to detect the whole range-spread target.Secondly,an integrating detector is devised to detect a range-spread target with dense scatterer density.Finally,to make the best of the advantages of M/K detector and integrating detector,a robust detector based on scatterer density(DBSD) is designed,which can reduce the probable collapsing loss or quantization error effectively.Moreover,the density decision factor of DBSD is also determined.The formula of the false alarm probability is derived for DBSD.It is proved that the DBSD ensures a constant false alarm rate property.Furthermore,the computational results indicate that the DBSD is robust to different clutter one-lag correlations and target scatterer densities.It is also shown that the DBSD outperforms the existing scatterer-density-dependent detector. 关 键 词:探测器 传播 非高斯 雷达目标检测 密度检测 鲁棒 高斯杂波 目标散射
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