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分數階傅里葉和壓縮感知自適應抗頻譜彌散干擾

趙楊 尚朝軒 韓壯志 韓寧 解輝

趙楊, 尚朝軒, 韓壯志, 韓寧, 解輝. 分數階傅里葉和壓縮感知自適應抗頻譜彌散干擾[J]. 電子與信息學報, 2019, 41(5): 1047-1054. doi: 10.11999/JEIT180569
引用本文: 趙楊, 尚朝軒, 韓壯志, 韓寧, 解輝. 分數階傅里葉和壓縮感知自適應抗頻譜彌散干擾[J]. 電子與信息學報, 2019, 41(5): 1047-1054. doi: 10.11999/JEIT180569
Yang ZHAO, Chaoxuan SHANG, Zhuangzhi HAN, Ning HAN, Hui XIE. Fractional Fourier Transform and Compressed Sensing Adaptive Countering Smeared Spectrum Jamming[J]. Journal of Electronics & Information Technology, 2019, 41(5): 1047-1054. doi: 10.11999/JEIT180569
Citation: Yang ZHAO, Chaoxuan SHANG, Zhuangzhi HAN, Ning HAN, Hui XIE. Fractional Fourier Transform and Compressed Sensing Adaptive Countering Smeared Spectrum Jamming[J]. Journal of Electronics & Information Technology, 2019, 41(5): 1047-1054. doi: 10.11999/JEIT180569

分數階傅里葉和壓縮感知自適應抗頻譜彌散干擾

doi: 10.11999/JEIT180569
基金項目: 國家自然科學基金(61601496)
詳細信息
    作者簡介:

    趙楊:男,1992年生,博士,研究方向為壓縮感知、信號處理、雷達抗干擾

    尚朝軒:男,1964年生,博士,教授,博士生導師,研究方向為武器系統(tǒng)性能檢測、雷達信號處理

    韓壯志:男,1972年生,博士,副教授,碩士生導師,研究方向為雷達信號處理、武器系統(tǒng)性能評估

    韓寧:男,1985年生,博士,工程師,研究方向為雙基地雷達、SAR雷達

    解輝:男,1983年生,博士,講師,研究方向為雷達、通信信號偵察及信道編碼識別

    通訊作者:

    趙楊 zhaoyang_oec@foxmail.com

  • 中圖分類號: TN974

Fractional Fourier Transform and Compressed Sensing Adaptive Countering Smeared Spectrum Jamming

Funds: The National Natural Science Foundation of China (61601496)
  • 摘要:

    頻譜彌散(SMSP)干擾與線性調頻雷達信號之間存在大量的時頻域耦合,干擾效能突出。該文提出一種信息域的抗SMSP干擾的信號處理算法,根據SMSP干擾信號的形式與特點,通過自適應改變壓縮感知的干擾基字典,同時匹配雷達信號與干擾信號的調頻率,構建壓縮感知求解模型并基于凸優(yōu)化算法完成信號重構,最終實現干擾信號的識別及雷達信號的提取。該算法中冗余字典的構造采用了Pei型分數階傅里葉快速分解方法,不需要反復對信號進行時頻域解耦,并且迭代次數較少,運算效率較高。

  • 圖  1  時域波形

    圖  2  脈沖壓縮結果

    圖  3  混合干擾后時域波形

    圖  4  混合干擾后脈沖壓縮結果

    圖  5  STFT結果

    圖  6  STFT等高線圖

    圖  7  3組仿真實驗結果

    圖  8  3種算法的干擾抑制曲線

    表  1  恢復結果的均方誤差統(tǒng)計值(×10–14)

    調頻倍數切片數
    2468
    31.51261.48371.50181.5525
    51.52461.55391.51871.4641
    71.47271.54151.54431.5563
    91.48111.56561.57071.5487
    下載: 導出CSV
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  • 收稿日期:  2018-06-11
  • 修回日期:  2018-12-12
  • 網絡出版日期:  2018-12-28
  • 刊出日期:  2019-05-01

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