| 引用本文: | 王飞行,汤广富,贺思三,等.高重频频率步进雷达强杂波抑制.[J].国防科技大学学报,2009,31(4):52-57.[点击复制] |
| WANG Feixing,TANG Guangfu,HE Sisan,et al.Severe Clutter Suppression in High PRF Stepped-frequency Radar[J].Journal of National University of Defense Technology,2009,31(4):52-57[点击复制] |
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| 高重频频率步进雷达强杂波抑制 |
| 王飞行, 汤广富, 贺思三, 付强 |
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(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: |
| 针对高重频频率步进雷达，提出了抑制强杂波的有效处理流程。在接收机前端控制中频带通滤波器的通带范围以减少进入后续处理的折叠杂波，在信号处理机中针对目标运动速度的不同提出了两种方法：通过波形参数设计及高分辨处理消除杂波对高速目标的影响；利用两幅高分辨距离像(HRRP)进行杂波相消以抑制杂波对低速目标的干扰。该处理不需要改变基本的频率步进波形，具有简单易行的优点。仿真和试验结果验证了所提方法的有效性。 |
| 关键词: 高重频 频率步进雷达 折叠杂波 杂波抑制 |
| DOI： |
| 投稿日期：2009-03-09 |
| 基金项目:国家部委重点基金资助项目 |
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| Severe Clutter Suppression in High PRF Stepped-frequency Radar |
| WANG Feixing, TANG Guangfu, HE Sisan, FU Qiang |
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(College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| A processing flow is proposed to suppress the severe clutter in high pulse repetition frequency (PRF) stepped-frequency radar. Firstly, the folded clutter caused by high PRF is attenuated by the intermediate frequency (IF) band-pass filter in the receiver's foreside. Secondly, two methods are brought forward to reject the residual clutter for targets of different velocities in signal processing system. On condition of specific waveform parameters, high range resolution processing eliminates the effect of the clutter to high speed targets. Two high resolution range profiles (HRRP) are utilized to cancel the clutter for low speed targets. The current method of processing need not change the basic stepped-frequency waveform and has the advantages of simplicity and effectiveness. The simulation and experiment results validate the correctness of the method. |
| Keywords: high pulse repetition frequency stepped-frequency radar folded clutter clutter suppression |
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