| 一种在双通道SAR图像域实现地面运动目标检测的方法 |
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| 引用本文： | 高飞,毛士艺,袁运能,玉振明. 一种在双通道SAR图像域实现地面运动目标检测的方法[J]. 电子学报, 2006, 34(4): 755-760 |
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| 作者姓名： | 高飞 毛士艺 袁运能 玉振明 |
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| 作者单位： | 北京航空航天大学203教研室,北京,100083;广西大学梧州分校,广西梧州,543002 |
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| 摘 要： | 提出了一种在双通道SAR(Synthetic Aperture Radar)图像域基于采样协方差矩阵分析的运动目标检测方法.此方法利用了双通道协方差矩阵非对角元素的性质,即当运动目标的存在使得通道之间不完全匹配时,使得此元素的幅度或者相位信息发生变化,通过检测此变化就可以检测到两个通道之间的起伏,即完成运动目标的检测.相比通常的DPCA(Displaced Phase Center Antenna),该方法的杂波抑制能力更强,消除了目标旁瓣的影响,使得检测目标的门限更好选择,降低了Pfa(Probability of false alarm),仿真结果证明了其在杂波抑制和目标检测方面的优越性能.
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| 关 键 词： | 合成孔径雷达 地面运动目标检测 天线相位中心偏置法 协方差矩阵 |
| 文章编号： | 0372-2112（2006）04-0755-06 |
| 收稿时间： | 2005-05-20 |
| 修稿时间： | 2005-05-202005-11-06 |
A New Ground Moving Targets Detector in Dual-Channel SAR Images |
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| GAO Fei,MAO Shi-yi,YUAN Yun-neng,YU Zhen-ming. A New Ground Moving Targets Detector in Dual-Channel SAR Images[J]. Acta Electronica Sinica, 2006, 34(4): 755-760 |
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| Authors: | GAO Fei MAO Shi-yi YUAN Yun-neng YU Zhen-ming |
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| Affiliation: | 1. Group 203,Beijing University of Aeronautics and Astronautics,Beijing 100083,China;2. Wuzhou Branch of Guangxi University,Wuzhou,Guangxi 543002,China |
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| Abstract: | Concerning ground moving targets detection in dual-channel SAR images, a novel detector based on dual-channel sample covariance matrix is proposed. The method succeeds by checking magnitude and phase variation of off-diagonal elements in sample covariance matrix. Compared with traditional DPCA, it achieves better clutter rejection, eliminates influences from target sidelobes, sets threshold more easily and gets lower Pfa. Simulation results show the effectiveness of the method. |
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| Keywords: | synthetic aperture radar ground moving target indication displaced phase center antenna covariance matrix |
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