| 引用本文: | 熊智敏,王党卫,李星辉.OFDM-MIMO雷达转发式主瓣干扰自适应抑制方法.[J].国防科技大学学报,2023,45(1):25-34.[点击复制] |
| XIONG Zhimin,WANG Dangwei,LI Xinghui.Forward main lobe jamming adaptive suppression method for OFDM-MIMO radar[J].Journal of National University of Defense Technology,2023,45(1):25-34[点击复制] |
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| OFDM-MIMO雷达转发式主瓣干扰自适应抑制方法 |
| 熊智敏1,王党卫2,李星辉2 |
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(1. 国防科技大学 信息通信学院, 湖北 武汉 430010;2. 空军预警学院 预警技术系, 湖北 武汉 430019)
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| 摘要: |
| 转发式干扰因与雷达发射波形的高度相关性,经雷达主瓣接收后易对雷达产生严重的干扰作用。为解决主瓣干扰问题,建立正交频率分集调频多输入多输出(orthogonal frequency division multiplexing-multiple input multiple output, OFDM-MIMO)雷达主瓣接收的转发式干扰信号模型,分析了该干扰对OFDM-MIMO雷达的干扰机理；同时基于自适应方法处理理论,推导了OFDM-MIMO雷达自适应处理权向量解析式,提出了基于距离依赖波束的OFDM-MIMO雷达转发式主瓣干扰自适应抑制方法。理论研究和仿真结果表明,提出的方法提高了输出信干噪比,实现了转发式主瓣干扰的有效抑制。 |
| 关键词: 正交频率分集 多输入多输出雷达 转发式主瓣干扰 方位-距离两维自适应处理 |
| DOI：10.11887/j.cn.202301003 |
| 投稿日期：2021-02-02 |
| 基金项目:国家自然科学基金资助项目(61901480) |
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| Forward main lobe jamming adaptive suppression method for OFDM-MIMO radar |
| XIONG Zhimin1, WANG Dangwei2, LI Xinghui2 |
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(1. College of Information and Communication, National University of Defense Technology, Wuhan 430010, China;2. Early Warning Technology Department, Air Force Early Warning Academy, Wuhan 430019, China)
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| Abstract: |
| Because of the high correlation between the forward jamming and the radar transmitting waveform, it is easy to cause serious jamming to the radar after being received by the radar main lobe. In order to solve the main lobe interference problem, the forward interference signal model of OFDM-MIMO (orthogonal frequency division multiplexing-multiple input multiple output) radar main lobe was established, and the interference mechanism of OFDM-MIMO radar was analyzed. At the same time, based on the adaptive method processing theory, the analytical formula of OFDM-MIMO radar adaptive processing weight vector was derived, and an OFDM-MIMO radar forward main lobe interference adaptive suppression method based on range-dependent beam was proposed. Theoretical research and simulation results show that the proposed method can improve the output signal to interference plus noise ratio and effectively suppress the forward main lobe interference. |
| Keywords: orthogonal frequency diversity MIMO radar forward main lobe jamming two-dimensional adaptive processing of azimuth-distance |
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