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《Acta Armamentarii》 2011-03
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A High Resolution DOA Estimation Algorithm Based on Modified Inverse Beam-forming

CHEN Li-gang1,YUAN Bing-cheng2,LIU Jian-guo2(1.The Navy Deputation in Residence of Hangzhou,Hangzhou 310012,Zhejiang,China;2.Department of Weaponry Engineering,Naval University of Engineering,Wuhan 430033,Hubei,China)  
Aimed at some inherent shortcomings,such as high sidelobe level and limited resolution,of common inverse beam-forming(IBF),a new solution for the IBF integral equation based on an auto-regressive(AR) model is presented.By regarding the received data of each element as a spatial sequence satisfying a certain AR model,the method introduces the parametric model into the solution of the IBF integral equation and makes full use of the information received by the array to estimate the spatial spectrum of the acoustic field.The method also uses the sliding average to suppress the sidelobe,and it is beneficial to the DOA estimation for the weak target signal.The pre-estimate for number of source is not required,which makes it has a robust performance than the high resolution methods based on subspace decomposition in low SNR.The feasibility and superiority of the method are confirmed by the numerical simulations and the lake experiment results.
【Fund】: 第42批中国博士后科学基金一等资助(20070420181);; 首批中国博士后科学基金特别资助(200801487)
【CateGory Index】: TB52
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 WAN Jin, SONG Zhi-jie(Oceanorgraphy University of China, Qingdao 266071, China);Inverse beam forming on equispaced line array with moving average[J];Technical Acoustics;2007-03
2 WANG Liang,SONG Zhi-Jie,DU Ji-Yan(Department of Physics,Ocean University of China,Qingdao 266100,China);High Resolution Algorithm for Passive Direction Finding Sonar Analysis Based on Fourth-Order Cumulants[J];Periodical of Ocean University of China;2007-02
China Proceedings of conference Full-text Database 1 Hits
1 WAN Xinwang GE Huiliang Wang Zhongkang GONG Xianyi (State Key Lab. Of Oceanic Acoustics, Hangzhou Applied Acoustics Research Institute,P.O.Box 1249,Hangzhou, China);Investigation of beamforming in background of platform generatednoise[A];[C];2001
【Co-citations】
Chinese Journal Full-text Database 2 Hits
1 WAN Jin, SONG Zhi-jie(Oceanorgraphy University of China, Qingdao 266071, China);Inverse beam forming on equispaced line array with moving average[J];Technical Acoustics;2007-03
2 WANG Zhong JIANG Han-Zhong CHEN Fu-Hu (Hangzhou Applied Acoustics Research Institute,Hangzhou,310012);Sidelobe controling of the inverse beamforming[J];Applied Acoustics;2009-05
【Secondary Citations】
China Proceedings of conference Full-text Database 1 Hits
1 WAN Xinwang GE Huiliang Wang Zhongkang GONG Xianyi (State Key Lab. Of Oceanic Acoustics, Hangzhou Applied Acoustics Research Institute,P.O.Box 1249,Hangzhou, China);Investigation of beamforming in background of platform generatednoise[A];[C];2001
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