| 稳健的机载预警雷达多通道海杂波抑制方法研究 |
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| 引用本文： | 黄鹏辉, 邹子豪, 刘兴钊, 廖桂生, 王志城, 陈筠力, 刘艳阳. 稳健的机载预警雷达多通道海杂波抑制方法研究[J]. 电子与信息学报, 2021, 43(9): 2680-2687. doi: 10.11999/JEIT200411 |
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| 作者姓名： | 黄鹏辉 邹子豪 刘兴钊 廖桂生 王志城 陈筠力 刘艳阳 |
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| 作者单位： | 1.上海交通大学电子信息与电气工程学院 上海 200240;;2.西安电子科技大学雷达信号处理国家重点实验室 西安 710071;;3.上海无线电设备研究所 上海 200090;;4.上海航天技术研究院 上海 201109 |
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| 基金项目： | 国家重点研发项目基金(2017YFB0502700),国家自然科学青年基金(61801289),上海航天科技创新基金(SAST2019-071) |
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| 摘 要： | 在机载预警雷达对海洋背景运动目标的探测过程中,雷达平台的高速运动状态使得海杂波多普勒谱发生严重展宽现象,影响目标的检测性能.针对此问题,空-时自适应处理是一种有效的杂波抑制技术,该技术利用杂波的空-时2维耦合特性进行杂波抑制.但相对于陆地杂波而言,海杂波的内部复杂运动特性使得杂波空-时谱发生展宽现象,导致杂波多普勒频率...
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| 关 键 词： | 机载预警雷达 杂波抑制 空-时自适应处理 子空间投影法 海杂波 |
| 收稿时间： | 2020-05-26 |
| 修稿时间： | 2020-12-10 |
Robust Sea Clutter Suppression Method for Multichannel Airborne Radar |
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| Penghui HUANG, Zihao ZOU, Xingzhao LIU, Guisheng LIAO, Zhicheng WANG, Junli CHEN, Yanyang LIU. Robust Sea Clutter Suppression Method for Multichannel Airborne Radar[J]. Journal of Electronics & Information Technology, 2021, 43(9): 2680-2687. doi: 10.11999/JEIT200411 |
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| Authors: | Penghui HUANG Zihao ZOU Xingzhao LIU Guisheng LIAO Zhicheng WANG Junli CHEN Yanyang LIU |
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| Affiliation: | 1. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;;2. National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China;;3. Shanghai Radio Equipment Research Institute, Shanghai 200090, China;;4. Shanghai Academy of Space Technology, Shanghai 201109, China |
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| Abstract: | During the marine moving target detection for airborne early warning radar, the high-speed movement of the radar platform causes the serious broadening of the sea clutter Doppler spectrum, which affects the target detection performance. To solve this problem, a clutter suppression method called Space-Time Adaptive Processing (STAP) is effective, which exploits the space-time coupling characteristics of clutter. However, compared with the land clutter, the motion characteristics of sea clutter lead to the broadening of the clutter space-time spectrum, resulting in the clutter Doppler frequency and the spatial cone angle no longer maintaining a one-to-one correspondence; thus the clutter suppression performance significantly degrades. According to the motion characteristics of sea clutter, a robust subspace projection method is proposed in this paper. This method improves the robustness of clutter suppression by using the adaptive notch broadening technique and the filter then adapt technique. Finally, the effectiveness of this method is verified through the simulation results and the real-measured sea clutter data. |
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| Keywords: | Airborne early warning radar Clutter suppression Space-Time Adaptive Processing (STAP) Subspace projection method Sea clutter |
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