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《Geomatics and Information Science of Wuhan University》 2006-03
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Accurately Determining DOA and TOA in Multi-beam Sonar Sounding

YANG Fanlin~(1,2) ZHAO Jianhu~(3) ZHOU Fengnian~(4) DU Zhixing~(2)(1 Laboratory of Submarine Geosciences of State Oceanic Administration,36 North Baoshu Road,Hangzhou 310012,China)(2 Geoinformation Science and Engeering College,Shandong University of Science and Technology, 579 Qianwangang Road,Qingdao Economic and Technical Development Area,Qingdao 266510,China)(3 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China)(4 The Survey Bureau of Hydrology and Water Resources of Changjiang Estuary,Changjiang Water Resources Commission,Taicang 215431,China)  
This paper introduces the detecting echo methods for multi-beam sonar.It describes the disadvantage of BDI and WMT detecting methods.So Maximal Amplitude Determining Echo method is presented.It adopts median filter and local variance estimation and wavelet analysis to remove outliers and noises,then one ping data are considered as planar signals and are processed through image processing methods.After high amplitude data have been segmented,accurate and robust DOA and TOA are obtained.The simulated data are analyzed in this paper,and good results are verified.
【Fund】: 山东省重点实验室开放研究基金资助项目(SD040212);; 国家自然科学基金资助项目(40506023)
【CateGory Index】: U666.7
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