Institute of Electrical and Electronics Engineers Inc.
Doi
Abstract
Conference Name:OCEANS 2014 - Taipei. Conference Address: Taipei, Taiwan. Time:April 7, 2014 - April 10, 2014.Like other dolphins, Sousa Chinensis produces click signals to echolocate in underwater. Research on the source level (SL) of click signal transmitted by Sousa Chinensis is beneficial to understand the survival and behavior of such animals. In the shallow sea where the Sousa Chinensis lives, the underwater environment is so complex that causes the click signals propagation to the receiving hydrophone at different times in different paths. In this paper, we introduced autocorrelation signal process analysis to calculate the delay time, predicted the source level base on the oretical sound wave attenuation rule in the sea. During May of 2013, the Click signals were recorded by a set of hydrophone system in shallow sea of Xiamen in China. The results show that the SL of Sousa Chinensis ranges from 166.9 to 199.6 dB peak to peak (p-p) re: 1μPa, and mean value is 180.05±8.93dB
