Study on Real-time Detection of Underwater Acoustic Signals with Laser
A method has been developed to detect real-time underwater acoustic signals with laser and a corresponding test system has been built. The experiment results prove that the method can be used to detect real-time underwater acoustic signals with a frequency between 2kHz to 18kHz. When the underwater acoustic source generates sound causing fluctuation of the water surface, let laser beams irradiate the water interface from air, and the scattered light will carry frequency information of the acoustic waves. The precise optical detection device adopting basic principle of Michelson interferometer can detect change of optical parth difference caused by the water surface fluctuation, and achieve real-time information concerning audible frequency of the underwater acoustic source in the data processing system by means of demodulation.
laser detection interference underwater acoustic signals water surface wave
ZHANG Xiaolin TANG Wenyan DUAN Haipeng
School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin, Heilongjiang, China, 150001
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
1187-1190
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）