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《Computer Engineering and Applications》 2008-24
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Studies on inverse beamforming based on modified AR model

SU Shuai,SUN Chao China Ship Development and Design Center,Wuhan 430200,China  
The Inverse Beamforming(IBF) theory uses the cross-spectral functions at elements to estimate the acoustic field plane-wave density.Compared to the conventional beamforming,IBF provides much better performance in direction-of-arrival estimation and interference suppression. Based on the IBF theory and its Fourier solutions,this paper developed a new solution to the IBF integral equation based on the modified auto-regressive model and formed a corresponding method for DOA estimation. This method makes full use of the receiving information of the array and views the receiving signal of each element as a spatial sequence satisfying a certain parametric model. The forward-backward averaging was employed to overcome the imprecise problem of the covariance matrix which occurred when there were only few snapshots available for a low SNR target signal.Together with theoretical deduction,computer simulation showed the feasibility and effectiveness of this approach in solving the IBF integral equation and DOA estimation.
【CateGory Index】: TB566
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【References】
Chinese Journal Full-text Database 2 Hits
1 ZHENG En-ming1,2 SUN Chang-yu1 CHEN Xin-hua1 YU Hua-bing1(1.Institute of Acoustics,Chinese Academy of Science,Beijing,100190,China; 2.University of Chinese Academy of Science,Beijing,100190,China);The research of detection performance improving method for high-resolution inverse beam-forming[J];Journal of Signal Processing;2013-05
2 ZHENG Enming;CHEN Xinhua;SUN Changyu;YU Huabing;WEI Minglei;Institute of Acoustics,Chinese Academy of Science;University of Chinese Academy of Science;Beijing Co. Ltd.,China Mobile Communication Group;;Application of improved high-resolution inverse beam forming algorithm to circle array[J];Applied Acoustics;2013-06
【Co-references】
Chinese Journal Full-text Database 4 Hits
1 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);A High Resolution DOA Estimation Algorithm Based on Modified Inverse Beam-forming[J];Acta Armamentarii;2011-03
2 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
3 ZHOU Shengzeng DU Xuanmin (Shanghai Marine Electronic Equipment Research Institute Shanghai 201108);Research and application of fast-convergent minimum variance distortionless response algorithm[J];Acta Acustica;2009-06
4 Yang Yixin; sun Chao; Zhu Zhifu(Institute of Acoustics Engineering Northwestern Northwestern Polytechnical University);Studies on high resolution bearing estimation algorithms to beam outputs in phase mode space of circular arrays[J];SIGNAL PROCESSING;2000-02
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