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Proceedings Paper

Research on laser detection of underwater acoustic signals
Author(s): Tian-song Li; Tian-hua Zhou; Ning He; De-kun Zhang; Yi-han Li
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Paper Abstract

A technique is developed to detect underwater acoustic signals by utilizing the resultant surface perturbations. It uses light wave in air and uses acoustic wave under water. Because two best channels are combined together, it is an ideal method for remotely detecting underwater acoustic signals. The underwater acoustic signal can cause the perturbations at water-air interface. These perturbations result in an amplitude modulation effect on a laser beam reflected by the water surface. The modulated underwater laser signal can be detected by using a direct light intensity detecting method. Based on the theory of modulation of the intensity of laser, a detection system was developed in the laboratory. By analyzing the massive experimental data, the technique of laser detection of underwater acoustic signals is validated.

Paper Details

Date Published: 22 February 2008
PDF: 7 pages
Proc. SPIE 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology, 66220Q (22 February 2008); doi: 10.1117/12.790794
Show Author Affiliations
Tian-song Li, Guilin Univ. of Electronic Technology (China)
Beijing Univ. of Posts and Telecommunications (China)
Tian-hua Zhou, Guilin Univ. of Electronic Technology (China)
Shanghai Institute of Optics and Fine Mechanics (China)
Ning He, Guilin Univ. of Electronic Technology (China)
De-kun Zhang, Guilin Univ. of Electronic Technology (China)
Yi-han Li, Guilin Univ. of Electronic Technology (China)


Published in SPIE Proceedings Vol. 6622:
International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology

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