| 海杂波下的双门限恒虚警目标检测新方法 |
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| 引用本文： | 陈建军,黄孟俊,邱伟,赵宏钟,付强.海杂波下的双门限恒虚警目标检测新方法[J].电子学报,2011,39(9):2135-2141. |
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| 作者姓名： | 陈建军 黄孟俊 邱伟 赵宏钟 付强 |
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| 作者单位： | 国防科技大学电子科学与工程学院ATR重点实验室,湖南长沙,410073 |
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| 摘 要： | 相参雷达海杂波实测数据拟合结果表明,其能量在多普勒域的分布是变化的.各多普勒频率分量的幅度可分别用瑞利分布和威布尔分布来描述其分布规律.据此提出一种双门限恒虚警(CFAR)检测器,其采用级联结构实现,具有恒虚警性能,运算量与列窗检测器相当,但检测性能得到大大提升.采用实测海杂波与仿真目标信号进行蒙特卡洛实验,在保持虚警概率10-5,检测概率大于90%的条件下,相对列窗检测器,信噪比改善大于9dB,具有很好的工程应用前景.
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| 关 键 词： | 恒虚警 相参雷达 距离-多普勒 海杂波 |
| 收稿时间： | 2010-06-22 |
A Novel Method for CFAR Detector with Bi-Thresholds in Sea Clutter |
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| CHEN Jian-jun,HUANG Meng-jun,QIU Wei,ZHAO Hong-zhong,FU Qiang.A Novel Method for CFAR Detector with Bi-Thresholds in Sea Clutter[J].Acta Electronica Sinica,2011,39(9):2135-2141. |
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| Authors: | CHEN Jian-jun HUANG Meng-jun QIU Wei ZHAO Hong-zhong FU Qiang |
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| Affiliation: | CHEN Jian-jun,HUANG Meng-jun,QIU Wei,ZHAO Hong-zhong,FU Qiang(ATR Laboratony,School of Electronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China) |
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| Abstract: | It is confirmed by the field test that the power density of sea clutter received by the coherent radar varies in the Doppler domain,while the distribution of the amplitude of the Doppler frequency component can be mathematically modeled by the Rayleigh distribution or the Weibull distribution.A novel method for the constant false alarm rate(CFAR) detector with bi-thresholds is proposed.The proposed detector is implemented with a serial structure and has the ability for both threshold estimation and the CFAR... |
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| Keywords: | constant false alarm rate(CFAR) coherent radar range-doppler sea clutter |
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