Abstract
This study presents a method of passive localization for shallow water acoustic sources based on ray acoustic theory. ray acoustic theory is used to establish an 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 an artificial neural network for source localization. This ray-acoustic-based method of passive localization features simplicity, less calculation, and robust performance to environment variations. 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 nontrained source to prove its accuracy and reliability. [Work sponsored by National Science Council.]
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