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單快拍數據的分布式二維陣列測角方法研究

王俊,  向洪,  魏少明,  蔣海

王俊, 向洪, 魏少明, 蔣海. 單快拍數據的分布式二維陣列測角方法研究[J]. 電子與信息學報, 2018, 40(6): 1375-1382. doi: 10.11999/JEIT170856
引用本文: 王俊, 向洪, 魏少明, 蔣海. 單快拍數據的分布式二維陣列測角方法研究[J]. 電子與信息學報, 2018, 40(6): 1375-1382. doi: 10.11999/JEIT170856
WANG Jun, XIANG Hong, WEI Shaoming, JIANG Hai. 2-D DOA Estimation of Distributed Array with Single Snapshot[J]. Journal of Electronics & Information Technology, 2018, 40(6): 1375-1382. doi: 10.11999/JEIT170856
Citation: WANG Jun, XIANG Hong, WEI Shaoming, JIANG Hai. 2-D DOA Estimation of Distributed Array with Single Snapshot[J]. Journal of Electronics & Information Technology, 2018, 40(6): 1375-1382. doi: 10.11999/JEIT170856

單快拍數據的分布式二維陣列測角方法研究

doi: 10.11999/JEIT170856
  • 1.

    (北京航空航天大學電子信息工程學院 北京 100191) ②(空間物理重點實驗室 北京 100076)

基金項目: 

國家自然科學基金(61671035, 61501011, 61501012)

2-D DOA Estimation of Distributed Array with Single Snapshot

  • 1.

    (School of Electronics and Information Engineering, Beihang University, Beijing 100191, China)

  • 2.

    (Key Laboratory of Space Physics, Beijing 100076, China)

Funds: 

The National Natural Science Foundation of China (61671035, 61501011, 61501012)

  • 摘要: 該文針對2維陣列波達方向估計問題，提出一種基于單快拍數據的分布式2維DOA估計算法。該算法首先利用每個子陣單元的單快拍數據進行2維Hankle矩陣構造；然后基于2維狀態(tài)空間平衡法分別獲得方位角和俯仰角子陣單元內DOA估計與子陣單元間DOA估計；最后通過解模糊算法獲得方位角和俯仰角高精度無模糊DOA估計。該算法較好地解決了子陣單元內DOA估計和子陣單元間DOA估計之間的配對問題以及俯仰角和方位角之間配對問題，充分利用分布式陣列擴展陣列物理孔徑特性；同時該算法可直接對相干信號和非相干信號進行處理。計算機仿真結果驗證了所提算法的有效性。
    Abstract: An algorithm of Direction Of Arrival (DOA) estimation based on the single-snapshot data is proposed for distributed Two-Dimensional (2-D) array. 2-D Hankle matrixes are firstly constructed using the single observation of every subarray element. Then angles of azimuth and elevation for different baselines based on the distributed 2-D array are estimated using 2-D state space balance method. Finally, high accuracy and unambiguous angles of azimuth and elevation are obtained through the solution of fuzzy algorithm. The matching problem of the DOA estimation about different baselines and the pairing problem between azimuth and elevation are well solved by the proposed algorithm, therefore the characteristic of large aperture is acquired using the distributed array. At the same time, this algorithm can deal with the correlation signals and uncorrelation signals. Computer simulation results confirm the effectiveness of the proposed algorithm.
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出版歷程
  • 收稿日期:  2017-09-07
  • 修回日期:  2018-01-22
  • 刊出日期:  2018-06-19

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