电子学报2017，Vol.45Issue(6)：1342-1348,7.DOI:10.3969/j.issn.0372-2112.2017.06.009
非高斯杂波下基于子空间的距离扩展目标检测器
Range-Spread Target Detector Based on Subspace in Non-Gaussian Clutter
摘要
Abstract
In non-Gaussian clutter environment,the range-spread target detection without secondary data is addressed,by utilizing two-step design procedure.Firstly,with known clutter texture component,the data under test is transformed into the Gaussian ones.And then the test statistic is derived by using the appropriate estimates of unknown clutter covariance matrix and target scatterer amplitudes.Secondly,by orthogonally projecting the data under test onto the orthogonal complement of signal subspace,the unknown clutter texture components are estimated.Consequently,the range-spread target detector based on subspace is proposed,and its constant false alarm rate (CFAR) property is also analyzed.It is showed that,under the classical non-Gaussian background,the proposed detector outperforms the compared ones,in terms of CFAR property and detection performance.In addition,its detection performance enhances to different extents,as the number of sensors,the number of target range cells or the clutter spikiness increases.关键词
宽带雷达/距离扩展目标/正交补子空间/恒虚警率/辅助数据Key words
wideband radar/range-spread target/orthogonal complement subspace/constant false alarm rate/secondary data分类
信息技术与安全科学引用本文复制引用
简涛,廖桂生,何友,丁彪..非高斯杂波下基于子空间的距离扩展目标检测器[J].电子学报,2017,45(6):1342-1348,7.基金项目
国家自然科学基金(No.61102166, No.61471379) （No.61102166, No.61471379）
中国博士后科学基金(No.2013M540733, No.2014T70904) （No.2013M540733, No.2014T70904）
山东省博士基金(No.BS2013DX003) （No.BS2013DX003）
