引用本文: | 王飞行,贺思三,陈建军,等.运动平台下频率步进雷达杂波相消新方法[J].国防科技大学学报,2010,32(3):69-74.[点击复制] |
WANG Feixing,HE Sisan,CHEN Jianjun,et al.A Novel Method of Clutter Cancellation for Mobile Stepped-frequency Radar[J].Journal of National University of Defense Technology,2010,32(3):69-74[点击复制] |
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运动平台下频率步进雷达杂波相消新方法 |
王飞行, 贺思三, 陈建军, 付强 |
(国防科技大学 电子科学与工程学院,湖南 长沙 410073)
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摘要: |
相消处理是一种典型而又简单易行的杂波滤除方法。针对频率步进雷达,提出一种新的杂波相消方法,它利用同一距离单元上两帧回波脉冲所成的两幅高分辨距离像(HRRP)进行杂波相消。通过合理地选择帧间隔数,该方法能够很好地保持目标HRRP特性。针对雷达平台运动所导致的两幅HRRP之间杂波移位和成分改变问题,又提出了先利用杂波相关性进行杂波对齐后再相消的解决方法。仿真结果验证了所提方法的有效性。 |
关键词: 杂波相消 频率步进雷达 高分辨距离像 运动平台 |
DOI: |
投稿日期:2009-05-04 |
基金项目:国家部委重点基金资助项目(6140521) |
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A Novel Method of Clutter Cancellation for Mobile Stepped-frequency Radar |
WANG Feixing, HE Sisan, CHEN Jianjun, FU Qiang |
(College of Electronic Science and Engineering, National Univ. of Defense Technology,Changsha 410073,China)
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Abstract: |
Cancellation processing is one kind of classical and feasible idea for the purpose of cancelling clutter. A novel method of clutter cancellation for stepped-frequency radar was proposed. Transmitting the basic stepped-frequency waveform, the radar achieves two high resolution range profiles (HRRP) that were produced by the Inverse Discrete Fourier Transform (IDFT) of two frames of return pulses on a same range cell. The two HRRPs which the number of frame interval was chosen rationally were utilized to cancel the clutter, which can keep the HRRP property of a target. To resolve the problems of the clutter shift and the clutter component change induced by the radar platform movement, a strategy was also brought out. The clutter of two HRRPs was aligned by the clutter correlation and then was cancelled. The simulation results validate the correctness of the method. |
Keywords: clutter cancellation stepped-frequency radar high range resolution profile mobile platform |
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