High-resolution bottom detection algorithm for a multibeam echo-sounder system with a U-shaped array

作     者：JIANG Ying YANG Zhiguo LIU Zongwei YANG Chunmei 

作者机构：Key Laboratory of Marine Science and Numerical ModelingThe First Institute of OceanographyState Oceanic Administration Laboratory for Regional Oceanography and Numerical ModelingQingdao National Laboratory for Marine Science and Technology China National Deep Sea CenterState Oceanic Administration 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2018年第37卷第7期

页      面：78-84页

核心收录：

学科分类：0710[理学-生物学] 0908[农学-水产] 0707[理学-海洋科学] 08[工学] 0816[工学-测绘科学与技术] 

基　　金：The National Natural Science Foundation of China under contract No.41706066 the National Key R&D Program of China under contract No.2016YFC1400200 the China-ASEAN Maritime Cooperation Fund 

主　　题：high-resolution bottom detection multibeam echo-sounder subarray beamforming virtual array transformation 

摘      要：High-resolution approaches such as multiple signal classification and estimation of signal parameters via rotational invariance techniques（ESPRIT） are currently employed widely in multibeam echo-sounder（MBES）systems for sea floor bathymetry,where a uniform line array is also ***,due to the requirements in terms of the system coverage/resolution and installation space constraints,an MBES system usually employs a receiving array with a special shape,which means that high-resolution algorithms cannot be applied *** addition,the short-term stationary echo signals make it difficult to estimate the covariance matrix required by the high-resolution approaches,which further increases the complexity when applying the high-resolution algorithms in the MBES *** ESPRIT with multiple-angle subarray beamforming is employed to reduce the requirements in terms of the signal-to-noise ratio,number of snapshots,and computational *** simulations show that the new processing method can provide better fine-structure *** a highresolution bottom detection（HRBD） algorithm is developed by combining the new processing method with virtual array *** application of the HRBD algorithm to a U-shaped array is also *** computer simulations and experimental data processing results verify the effectiveness of the proposed algorithm.