| 一种多通道SAR地面快速目标高概率检测方法 |
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| 引用本文： | 钱江,孙光才,李凉海,邢孟道.一种多通道SAR地面快速目标高概率检测方法[J].电波科学学报,2011(2):354-361. |
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| 作者姓名： | 钱江 孙光才 李凉海 邢孟道 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室;中国航天科技集团第七○四研究所; |
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| 基金项目： | 武器装备预研基金项目(9140A21020609DZ01) |
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| 摘 要： | 研究了合成孔径雷达地面动目标检测(SAR-GMTI)的快速目标检测问题。为提高检测概率,在回波数据的距离压缩-方位时域,对基带多普勒中心偏移对应的速度分量引起的走动采用Keystone变换进行校正,对整数倍脉冲重复频率(PRF)的多普勒中心偏移对应速度引起的走动量则可在时域加以校正,校正后再进行方位匹配滤波得到运动目标SAR图像,同时利用距离走动信息完成速度解模糊。实测数据处理结果验证了该方法的有效性。
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| 关 键 词： | SAR-GMTI 快速目标 Keystone变换 解PRF模糊 |
Multi-channel SAR high speed target indication with improved detection probability |
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| QIAN Jiang SUN Guang-cai LI Liang-hai XING Meng-dao.Multi-channel SAR high speed target indication with improved detection probability[J].Chinese Journal of Radio Science,2011(2):354-361. |
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| Authors: | QIAN Jiang SUN Guang-cai LI Liang-hai XING Meng-dao |
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| Affiliation: | QIAN Jiang1 SUN Guang-cai1 LI Liang-hai2 XING Meng-dao1(1.National Lab.of Radar Signal Processing,Xidian University,Xi'an Shaanxi 710071,China,2.The 704th Institute of China Aerospace Science and Technology Corporation,Beijing 100076,China) |
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| Abstract: | This paper investigates the problem of fast moving target indication in synthetic aperture radar and ground moving target indication(SAR-GMTI).In order to improve the detection probability,the range walk caused by the velocity component corresponding to baseband Doppler centroid can be corrected by Keystone transform,and the residual range walk is proportional to the Doppler shift which equals to several pulse repetition frequencies(PRF),which can be corrected in range compressed azimuth time domain.The SAR... |
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| Keywords: | SAR-GMTI fast moving target Keystone transform PRF ambiguity resolving |
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