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Proceedings Paper

An experimental system using pulsed laser developed for detecting underwater objects
Author(s): Jionghui Rao; Kecheng Yang; Gang Lu; Xiaohui Zhang
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Paper Abstract

The influence of water backscattering on detecting ability should be considered emphatically when optical methods were used to detect underwater object. The water backscattering light can be decreased by using a short pulsed laser in the system and the precise distance of the detected object can be obtained easily. An experimental system made up of short pulsed laser, received optical system, narrowband light filter, high speed detector, high speed data acquisition and process system and so on was established. To validate its detection ability, this system was set into a large water pond to detect several kinds of objects with different reflection index. We processed mass of experimental data get from above experiment with simple method, and the processing result proved that this system had the ability of detecting objects whose distance is about sixty meters. Because of its precise ranging ability, this system can be used with the combination of a right scan device in three dimensional underwater imaging system.

Paper Details

Date Published: 11 January 2007
PDF: 6 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62791T (11 January 2007); doi: 10.1117/12.725228
Show Author Affiliations
Jionghui Rao, Huazhong Univ. of Science and Technology (China)
Naval Univ. of Engineering (China)
Kecheng Yang, Huazhong Univ. of Science and Technology (China)
Gang Lu, Dept. of Naval Equipment (China)
Xiaohui Zhang, Naval Univ. of Engineering (China)

Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics
Xun Hou; Wei Zhao; Baoli Yao, Editor(s)

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