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基于發(fā)射波束域-三迭代的機載MIMO雷達STAP方法

王珽 趙擁軍 趙闖

王珽, 趙擁軍, 趙闖. 基于發(fā)射波束域-三迭代的機載MIMO雷達STAP方法[J]. 電子與信息學(xué)報, 2016, 38(5): 1034-1040. doi: 10.11999/JEIT150741
引用本文: 王珽, 趙擁軍, 趙闖. 基于發(fā)射波束域-三迭代的機載MIMO雷達STAP方法[J]. 電子與信息學(xué)報, 2016, 38(5): 1034-1040. doi: 10.11999/JEIT150741
WANG Ting, ZHAO Yongjun, ZHAO Chuang. Airborne MIMO Radar STAP Method Based on Transmit Beamspace-tri-iterative Algorithm[J]. Journal of Electronics & Information Technology, 2016, 38(5): 1034-1040. doi: 10.11999/JEIT150741
Citation: WANG Ting, ZHAO Yongjun, ZHAO Chuang. Airborne MIMO Radar STAP Method Based on Transmit Beamspace-tri-iterative Algorithm[J]. Journal of Electronics & Information Technology, 2016, 38(5): 1034-1040. doi: 10.11999/JEIT150741

基于發(fā)射波束域-三迭代的機載MIMO雷達STAP方法

doi: 10.11999/JEIT150741
基金項目: 

國家自然科學(xué)基金(41301481)

Airborne MIMO Radar STAP Method Based on Transmit Beamspace-tri-iterative Algorithm

Funds: 

The National Natural Science Foundation of China (41301481)

  • 摘要: 針對傳統(tǒng)機載多輸入多輸出(MIMO)雷達空時自適應(yīng)處理(STAP)中由于發(fā)射功率分散而造成的輸出信雜噪比(SCNR)下降的問題,該文提出一種基于發(fā)射波束域-三迭代的機載MIMO雷達STAP方法。首先建立了發(fā)射波束域MIMO雷達STAP的信號模型,并且給出了發(fā)射波束加權(quán)矩陣的優(yōu)化設(shè)計準(zhǔn)則,能夠使發(fā)射功率聚集于感興趣的目標(biāo)空域。然后對發(fā)射波束域MIMO雷達的雜噪比(CNR)進行分析,表明其與發(fā)射總功率的關(guān)系,理論推導(dǎo)顯示:相比于全向等功率發(fā)射的傳統(tǒng)MIMO雷達CNR,發(fā)射波束域MIMO雷達CNR減小。同時,為進一步降低發(fā)射波束域MIMO-STAP的訓(xùn)練樣本數(shù)需求與運算復(fù)雜度,采用三迭代算法進行權(quán)值降維求解。理論分析與仿真實驗結(jié)果表明:通過相應(yīng)的三迭代降維處理,發(fā)射波束域MIMO-STAP與傳統(tǒng)全向等功率發(fā)射MIMO-STAP相比能夠獲取更加優(yōu)越的輸出SCNR性能,且運算量進一步降低。因此,本文提出的發(fā)射波束域-三迭代方法具有重要的工程應(yīng)用價值。
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出版歷程
  • 收稿日期:  2015-06-18
  • 修回日期:  2016-01-22
  • 刊出日期:  2016-05-19

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