Source localization in shallow water by using ray theory

• Main Authors: I-Shiang Lin, 林意翔
• Other Authors: Gee-Pinn Too
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/94204325524988701615

碩士 === 國立成功大學 === 系統及船舶機電工程學系碩博士班 === 92 === 　　The thesis presents a method of passive localization for shallow water acoustic sources based on Ray acoustic theory. Ray acoustic theory is used to establish underwater acoustic channel and to analyze physical quantities (arrival time and arrival angle) received by sensors, and to determine mutual relationship of rays between sources and receivers by using artificial neural network for source localization. This Ray-acoustic based method of passive localization features its simplicity, less calculation, and robust performance to environment variations, as compared with those methods based on Normal Mode theory. Hence, the method is more practicable and more valuable for source localization. In this study, the Ray-acoustic based method of passive localization is not only used in shallow water, but it is also verified by using a non-trained source to proof its accuracy and reliability.