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Proceedings Paper

Underwater laser detection system
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Paper Abstract

The conventional method used to detect an underwater target is by sending and receiving some form of acoustic energy. But the acoustic systems have limitations in the range resolution and accuracy; while, the potential benefits of a laserbased underwater target detection include high directionality, high response, and high range accuracy. Lasers operating in the blue-green region of the light spectrum(420 : 570nm)have a several applications in the area of detection and ranging of submersible targets due to minimum attenuation through water ( less than 0.1 m-1) and maximum laser reflection from estimated target (like mines or submarines) to provide a long range of detection. In this paper laser attenuation in water was measured experimentally by new simple method by using high resolution spectrometer. The laser echoes from different targets (metal, plastic, wood, and rubber) were detected using high resolution CCD camera; the position of detection camera was optimized to provide a high reflection laser from target and low backscattering noise from the water medium, digital image processing techniques were applied to detect and discriminate the echoes from the metal target and subtract the echoes from other objects. Extraction the image of target from the scattering noise is done by background subtraction and edge detection techniques. As a conclusion, we present a high response laser imaging system to detect and discriminate small size, like-mine underwater targets.

Paper Details

Date Published: 26 March 2015
PDF: 19 pages
Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 934221 (26 March 2015); doi: 10.1117/12.2080181
Show Author Affiliations
Walid Gomaa, Military Technical College Univ. (Egypt)
Ashraf F. El-Sherif, Military Technical College Univ. (Egypt)
Yasser H. El-Sharkawy, Military Technical College Univ. (Egypt)


Published in SPIE Proceedings Vol. 9342:
Solid State Lasers XXIV: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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