| 基于压缩感知的时域抗射频干扰方法 |
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| 引用本文： | 李宇环,岳显昌,张兰.基于压缩感知的时域抗射频干扰方法[J].科学技术与工程,2020,20(7):2767-2772. |
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| 作者姓名： | 李宇环 岳显昌 张兰 |
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| 作者单位： | 武汉大学电子信息学院,武汉430072;武汉大学电子信息学院,武汉430072;武汉大学电子信息学院,武汉430072 |
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| 基金项目： | 国家高技术研究发展计划（863计划） |
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| 摘 要： | 射频干扰是高频地波雷达中一种不可避免的干扰,在海态探测应用中,会对海洋回波信息的提取造成极大困难。基于射频干扰在原始时域数据上的短时性特征,提出了基于压缩感知的时域抗射频干扰方法。该方法利用少量的无干扰采样数据即可对干扰数据段的海洋回波进行估计,以完成射频干扰抑制。经过仿真和实测数据的检验,射频干扰被完全抑制且海洋回波保持完好,表明该方法对射频干扰有良好的抑制效果。
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| 关 键 词： | 高频地波雷达 压缩感知 短时性 射频干扰抑制 海洋回波 |
| 收稿时间： | 2019/6/8 0:00:00 |
| 修稿时间： | 2019/10/29 0:00:00 |
Time-domain Radio Frequency Interference Suppression method Based on Compressed Sensing |
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| Li Yuhuan,Yue Xianchang,Zhang Lan.Time-domain Radio Frequency Interference Suppression method Based on Compressed Sensing[J].Science Technology and Engineering,2020,20(7):2767-2772. |
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| Authors: | Li Yuhuan Yue Xianchang Zhang Lan |
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| Institution: | School of Electronic Information, Wuhan University,,School of Electronic Information, Wuhan University |
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| Abstract: | Radio frequency interference (RFI), which can limit the extraction of the ocean echo information in the application of sea state detection, is an inevitable problem in high-frequency surface wave radar (HFSWR). Based on the short-time characteristics of RFI in the original time-domain data, a time-domain RFI suppression method based on compressed sensing (CS) is proposed. This method can estimate the ocean echoes in the interference data segment with a few of interference-free samples to suppress RFI. Through the test of simulational and measured data, RFI is completely suppressed and the ocean echoes remain intact, which indicates that the proposed method can achieve good performance on RFI suppression. |
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| Keywords: | high-frequency surface wave radar compressed sensing short-time characteristic RFI suppression ocean echo |
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