| 基于对角加载的机载MIMO雷达GLRT检测器 |
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| 引用本文： | 王鞠庭,江胜利,何劲,刘中.基于对角加载的机载MIMO雷达GLRT检测器[J].电子学报,2009,37(12):2614-2619. |
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| 作者姓名： | 王鞠庭 江胜利 何劲 刘中 |
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| 作者单位： | 南京理工大学电子工程系,江苏南京 210014 |
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| 摘 要： | 本文研究了基于GLRT的机载MIMO雷达自适应目标检测问题.针对参考单元数据不足对GLRT性能的影响,提出了基于对角加载的MIMO雷达GLRT(MIMO-LGLRT)检测器,并对其检测性能进行了分析,给出了虚警概率和检测概率的闭合表达式.该检测器充分利用机载MIMO雷达杂波子空间低秩的特点和对角加载技术,解决了因参考数据不足所引起的矩阵病态问题.为了减少MIMO-LGLRT检测器的运算量,在分析杂波协方差矩阵块对角化特性的基础上,给出一种简化MIMO-LGLRT检测器.理论分析和仿真结果表明,上述两种检测器相对于杂波协方差矩阵都具有恒虚警特性,检测性能优于普通GLRT检测器.
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| 关 键 词： | MIMO雷达 对角加载 广义最大似然 恒虚警 |
| 收稿时间： | 2008-05-26 |
GLRT Detector with Diagonal Loading for MIMO Radars |
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| WANG Ju-ting,JIANG Sheng-li,HE Jin,LIU Zhong.GLRT Detector with Diagonal Loading for MIMO Radars[J].Acta Electronica Sinica,2009,37(12):2614-2619. |
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| Authors: | WANG Ju-ting JIANG Sheng-li HE Jin LIU Zhong |
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| Affiliation: | Department of Electronic Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu 210014,China |
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| Abstract: | The generalized likelihood ratio test detector(GLRTD) for the airborne MIMO radars was studied in the paper.It is well-known that the GLRTD performs poorly in the case of limited secondary data.To settle this problem,the GLRTD with diagonal loading(LGLRTD) was proposed exploiting the low-rank property of MIMO radar clutter subspace and the diagonal loading techniques.The closed-form detection probability and false alarm probability were derived.To reduce the computational load of the proposed detector,a sim... |
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| Keywords: | MIMO radar diagonal loading GLRT(generalized likelihood ratio test) CFAR |
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