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高频雷达中非平稳射频干扰的分析及其抑制 被引量:2

Analysis and suppression of non-stationary co-channel interference in high frequency radar
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摘要 为抑制高频雷达中的非平稳射频干扰,推导并分析了其距离-多普勒谱形式及时频特征,指出在时频域上射频干扰表现为单(或多)分量时频脊,且在不同距离元上的时频分布仅有一个相位因子的差别.利用射频干扰特征提出了时频掩模法来抑制非平稳射频干扰.高频地波雷达OSMAR-S实测数据处理结果表明,关于射频干扰的分析正确,干扰抑制方法有效,能够显著提高高频雷达的抗射频干扰能力. To suppress the non-stationary co-channel interference (CCI) in 为抑制高频雷达中的非平稳射频干扰,推导并分析了其距离-多普勒谱形式及时频特征,指出在时频域上射频干扰表现为单(或多)分量时频脊,且在不同距离元上的时频分布仅有一个相位因子的差别.利用射频干扰特征提出了时频掩模法来抑制非平稳射频干扰.高频地波雷达OSMAR-S实测数据处理结果表明,关于射频干扰的分析正确,干扰抑制方法有效,能够显著提高高频雷达的抗射频干扰能力.high frequency (HF) radars, its range-Doppler spectral form and time-frequency characteristics were analyzed. Results show that the CCI takes the form of ridges with nearly identical time-frequency distributions across the range bins except the phase. A novel method by time-frequency masking was proposed to suppress the non-stationary CCI. The results of the real data collected by HF radar OSMAR-S show the validness of the analysis and the proposed method to enhance the anti-interference capabilities of the HF radars markedly.
作者 周浩 文必洋
出处 《华中科技大学学报(自然科学版)》 EI CAS CSCD 北大核心 2010年第5期41-44,共4页 Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金 国家高技术研究发展计划资助项目(2007AA09Z101) 国家自然科学基金资助项目(60901073)
关键词 高频雷达 射频干扰 抑制 掩模 时频分析 high frequency radar co-channel interference suppression masks time-frequency analysis
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共引文献61

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  • 1钟志峰,文必洋,王泉德,黄坚.高频地波雷达阵列的一种无源校准方法[J].电波科学学报,2007,22(3):414-418. 被引量:4
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