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基于旁瓣對消器的自適應(yīng)零陷優(yōu)化設(shè)計

曹運合,  郭勇強(qiáng),  劉帥,  劉玉濤

曹運合, 郭勇強(qiáng), 劉帥, 劉玉濤. 基于旁瓣對消器的自適應(yīng)零陷優(yōu)化設(shè)計[J]. 電子與信息學(xué)報, 2020, 42(3): 597-602. doi: 10.11999/JEIT190296
引用本文: 曹運合, 郭勇強(qiáng), 劉帥, 劉玉濤. 基于旁瓣對消器的自適應(yīng)零陷優(yōu)化設(shè)計[J]. 電子與信息學(xué)報, 2020, 42(3): 597-602. doi: 10.11999/JEIT190296
Yunhe CAO, Yongqiang GUO, Shuai LIU, Yutao LIU. Adaptive Null Broadening Algorithm Based on Sidelobes Cancellation[J]. Journal of Electronics & Information Technology, 2020, 42(3): 597-602. doi: 10.11999/JEIT190296
Citation: Yunhe CAO, Yongqiang GUO, Shuai LIU, Yutao LIU. Adaptive Null Broadening Algorithm Based on Sidelobes Cancellation[J]. Journal of Electronics & Information Technology, 2020, 42(3): 597-602. doi: 10.11999/JEIT190296

基于旁瓣對消器的自適應(yīng)零陷優(yōu)化設(shè)計

doi: 10.11999/JEIT190296
  • 1.

    西安電子科技大學(xué)雷達(dá)信號處理國家重點實驗室 西安 710071

  • 2.

    通信網(wǎng)信息傳輸與分發(fā)技術(shù)重點實驗室 石家莊 050081

基金項目: 國家自然科學(xué)基金(61771367)，通信網(wǎng)信息傳輸與分發(fā)技術(shù)重點實驗室開放基金(HHS19641X003)
詳細(xì)信息
    作者簡介:

    曹運合：男，1978年生，教授，博士生導(dǎo)師，研究方向為雷達(dá)信號處理、陣列信號處理、高速實時信號處理、DSP與FPGA開發(fā)

    郭勇強(qiáng)：男，1993年生，碩士生，研究方向為陣列信號處理、智能化雷達(dá)有源干擾抑制

    劉帥：男，1995年生，博士生，研究方向雷達(dá)信號處理、捷變頻信號處理

    劉玉濤：男，1981年生，博士，高級工程師，研究方向為移動自組織網(wǎng)、認(rèn)知無線電等

    通訊作者:

    曹運合　caoyunhe@mail.xidian.edu.cn

  • 中圖分類號: TN911.7

Adaptive Null Broadening Algorithm Based on Sidelobes Cancellation

  • 1.

    National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

  • 2.

    Science and Technology on Communication Networks Laboratory, Shijiazhuang 050081, China

Funds: The National Natural Science Foundation of China (61771367), The Open Foundation of Science and Technology on Communication Networks Laboratory (HHS19641X003)
  • 摘要:

    現(xiàn)有的零陷展寬算法忽略了錐化矩陣的相位信息，在對抗強(qiáng)方向性、大偏差角干擾時，零陷深度變淺，干擾抑制性能嚴(yán)重下降。該文以虛擬空域密集干擾為切入點，推導(dǎo)并提出一種可用于旁瓣對消器的自適應(yīng)零陷優(yōu)化設(shè)計算法。該算法通過對輔助陣列數(shù)據(jù)的自協(xié)方差矩陣和主輔陣列數(shù)據(jù)的互協(xié)方差矩陣同時進(jìn)行重構(gòu)實現(xiàn)零陷區(qū)域的自適應(yīng)控制，錐削矩陣只與陣元位置和展寬寬度有關(guān)，無需干擾信息，可以離線生成，不占用系統(tǒng)運算資源。仿真結(jié)果表明，該方法可以實現(xiàn)零陷區(qū)域的自適應(yīng)展寬，提高非平穩(wěn)干擾抑制的穩(wěn)健性。

    Abstract:

    In existing null broadening algorithm, the taper matrix does not contain phase information, and when it is used to against strong directional and large deviation angle interference, the null depth becomes shallow and the interference suppression performance drops seriously. An adaptive null broadening algorithm for sidelobe canceller is proposed based on dense disturbance in virtual airspace. The algorithm reconstructs the self-covariance matrix of the auxiliary array data and the co-covariance matrix of the main and auxiliary array data at the same time to realize the adaptive control of the null region. The taper matrix is only related to the position and width of the array elements, and it can be generated offline without disturbing information and occupying no computing resources of the system. The simulation results show that this method can achieve adaptive broadening of the null region and improve the robustness of non-stationary interference suppression.

    • HTML全文

  • 圖  1  不同零陷展寬區(qū)域效果圖

    圖  2  同側(cè)等零陷展寬合成方向圖

    圖  3  自適應(yīng)零陷展寬前后合成方向圖

    圖  4  輸出信干噪比隨角度偏差變化圖

    表  1  不同展寬算法運算時間比較(ms)

    零陷展寬算法運算時間
    文獻(xiàn)[15]0.157076
    本文算法0.175632
    下載: 導(dǎo)出CSV
  • 王永良, 丁前軍, 李榮鋒. 自適應(yīng)陣列處理[M]. 北京: 清華大學(xué)出版社, 2009: 203–208.
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  • 文章訪問數(shù):  2779
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  • 被引次數(shù): 0
出版歷程
  • 收稿日期:  2019-04-29
  • 修回日期:  2019-11-01
  • 網(wǎng)絡(luò)出版日期:  2019-11-12
  • 刊出日期:  2020-03-19

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