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基于高超聲速平臺(tái)前斜視多通道SAR-GMTI雜波抑制方法

王宇,  曹運(yùn)合,  齊晨,  韓玖勝,  劉玉濤

王宇, 曹運(yùn)合, 齊晨, 韓玖勝, 劉玉濤. 基于高超聲速平臺(tái)前斜視多通道SAR-GMTI雜波抑制方法[J]. 電子與信息學(xué)報(bào), 2020, 42(2): 458-464. doi: 10.11999/JEIT181002
引用本文: 王宇, 曹運(yùn)合, 齊晨, 韓玖勝, 劉玉濤. 基于高超聲速平臺(tái)前斜視多通道SAR-GMTI雜波抑制方法[J]. 電子與信息學(xué)報(bào), 2020, 42(2): 458-464. doi: 10.11999/JEIT181002
Yu WANG, Yunhe CAO, Chen QI, Jiusheng HAN, Yutao LIU. Multi-channel SAR-GMTI Clutter Suppression Method Based onHypersonic Platform Forward Squint[J]. Journal of Electronics & Information Technology, 2020, 42(2): 458-464. doi: 10.11999/JEIT181002
Citation: Yu WANG, Yunhe CAO, Chen QI, Jiusheng HAN, Yutao LIU. Multi-channel SAR-GMTI Clutter Suppression Method Based onHypersonic Platform Forward Squint[J]. Journal of Electronics & Information Technology, 2020, 42(2): 458-464. doi: 10.11999/JEIT181002

基于高超聲速平臺(tái)前斜視多通道SAR-GMTI雜波抑制方法

doi: 10.11999/JEIT181002
  • 1.

    西安電子科技大學(xué)雷達(dá)信號(hào)處理國(guó)家重點(diǎn)實(shí)驗(yàn)室 西安 710071

  • 2.

    通信網(wǎng)信息傳輸與分發(fā)技術(shù)重點(diǎn)實(shí)驗(yàn)室 石家莊 050081

基金項(xiàng)目: 國(guó)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(diǎn)實(shí)驗(yàn)室開(kāi)放基金(HHS19641X003)
詳細(xì)信息
    作者簡(jiǎn)介:

    王宇：男，1991年生，博士生，研究方向?yàn)楹铣煽讖嚼走_(dá)地面動(dòng)目標(biāo)檢測(cè)(SAR-GMTI)、空時(shí)自適應(yīng)處理(STAP)

    曹運(yùn)合：男，1978年生，教授、博士生導(dǎo)師，研究方向?yàn)槔走_(dá)信號(hào)處理，陣列信號(hào)處理，高速實(shí)時(shí)信號(hào)處理，DSP與FPGA開(kāi)發(fā)

    齊晨：女，1993年生，碩士生，研究方向?yàn)楹铣煽讖嚼走_(dá)地面動(dòng)目標(biāo)檢測(cè)(SAR-GMTI)

    韓玖勝：男，1994年生，博士生，研究方向?yàn)楹铣煽讖嚼走_(dá)地面動(dòng)目標(biāo)檢測(cè)(SAR-GMTI)、空時(shí)自適應(yīng)處理(STAP)

    通訊作者:

    曹運(yùn)合　cyh_xidian@163.com

  • 中圖分類號(hào): TN957.51

Multi-channel SAR-GMTI Clutter Suppression Method Based onHypersonic Platform Forward Squint

  • 1.

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

  • 2.

    Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, Shijiazhuang 050081, China

Funds: The National Natural Science Foundation of China (61771367), The science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory Foundation (HHS19641X003)
  • 摘要:

    針對(duì)高超聲速(HSV)平臺(tái)雷達(dá)系統(tǒng)，該文提出一種基于高超聲速平臺(tái)前斜視多通道合成孔徑雷達(dá)地面動(dòng)目標(biāo)檢測(cè)(SAR-GMTI)雜波抑制方法。該方法先進(jìn)行時(shí)域距離走動(dòng)校正和距離壓縮，并補(bǔ)償距離向通道相位誤差實(shí)現(xiàn)距離向包絡(luò)對(duì)齊；然后再對(duì)方位多普勒擴(kuò)展的信號(hào)進(jìn)行3階線調(diào)頻傅里葉變換(CFT)壓縮，并補(bǔ)償方位向通道相位誤差實(shí)現(xiàn)方位向包絡(luò)對(duì)齊；接著在距離時(shí)域-方位CFT域利用數(shù)字波束形成(DBF)技術(shù)對(duì)雜波及其模糊分量置零進(jìn)行空時(shí)自適應(yīng)處理(STAP)，從而可以有效抑制靜止雜波及其模糊分量并提取出無(wú)模糊的運(yùn)動(dòng)目標(biāo)回波信號(hào)。

    Abstract:

    According to the HyperSonic Vehicle (HSV) borne radar platform system, a multi-channel SAR-GMTI clutter suppression method is presented based on hypersonic platform forward squint mode. First, range walk correction and range compression are completed in the time domain, and the distance envelope is aligned simultaneously with phase error compensation. Then, the Doppler extended signal is compressed by three-order azimuth Chirp Fourier Transform (CFT), and the azimuth envelope of the echo is aligned with phase error compensation simultaneously. Next, the Digital Beam Forming (DBF) technology is applied to the range time-azimuth CFT domain by nulling the clutter and its ambiguous components to achieve Space-Time Adaptive Processing (STAP). The stationary clutter and its ambiguous components can be suppressed effectively and the echo signs of the moving target without blurring can be extracted.

    • HTML全文

  • 圖  1  高超聲速平臺(tái)前斜視多通道SAR-GMTI系統(tǒng)幾何模型

    圖  2  不同斜視角下的3階距離彎曲量結(jié)果圖

    圖  3  雜波抑制處理流程圖

    圖  4  不同傅里葉交換結(jié)果

    圖  5  雜波抑制結(jié)果

    圖  6  陣列天線方向圖

    表  1  仿真參數(shù)

    參數(shù)名稱載頻${f_{\rm{c}}}$斜視角平臺(tái)高度H中心斜距R距離分辨率信號(hào)多普勒帶寬重頻PRF平臺(tái)速度V相鄰?fù)ǖ篱g距d方位分辨率
    參數(shù)值10 GHz50°30 km60 km1 m1530 Hz554 Hz2380 m/s1.5 m1 m
    下載: 導(dǎo)出CSV
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    吳明宇, 楊桃麗, 吳順君, 等. 星載多通道高分辨率寬測(cè)繪帶SAR系統(tǒng)運(yùn)動(dòng)目標(biāo)檢測(cè)方法[J]. 電子與信息學(xué)報(bào), 2014, 36(2): 441–444. doi: 10.3724/SP.J.1146.2013.00465

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出版歷程
  • 收稿日期:  2018-11-01
  • 修回日期:  2019-04-20
  • 網(wǎng)絡(luò)出版日期:  2019-09-20
  • 刊出日期:  2020-02-19

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