A Method for the Removal of Ray Refraction Effects in Multibeam Echo Sounder Systems

作     者：DING Jisheng ZHOU Xinghua TANG Qiuhua 

作者机构：First Institute of Oceanography SOA Qingdao 266061 P. R. China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2008年第7卷第2期

页      面：233-236页

学科分类：082403[工学-水声工程] 08[工学] 0824[工学-船舶与海洋工程] 

基　　金：funded by the National High Technology Research and Development Program of China('863'Program)under contract Nos.2004AA616080 and 2006AA09ZI03 the National Natural Science Foundation of China(Project code:40606026) 

主　　题：multibeam echo sounder system acoustic ray refraction equivalent sound velocity profile 

摘      要：To a multibeam echo sounder system (MBES), under water sound refraction plays an important role in depth measure- ment accuracy, and errors in sound velocity profile lead to inaccuracies in the measured depth (especially for outer beams). A method is developed to estimate the sound velocity profile based on the depth measured by vertical beam. Using this depth and other pa- rameters, such as t (sound pulse propagation time), θ (beam inclination angle), etc. We can estimate a simple sound velocity profile with which the depth error has been reduced. This method has been tested with a real dataset acquired in the East China Sea.