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Underwater laser detection system
Gomaa, W.; El-Sherif, A.F.; El-Sharkawy, Y.H. (2015). Underwater laser detection system, in: Clarkson, W.A. et al. Solid State Lasers XXIV: technology and devices. pp. 934221-19. https://dx.doi.org/10.1117/12.2080181
In: Clarkson, W.A.; Shori, R.K. (Ed.) (2015). Solid State Lasers XXIV: technology and devices. Proceedings of SPIE, the International Society for Optical Engineering, 9342. SPIE: Bellingham. ISBN 9781628414325. https://dx.doi.org/10.1117/12.2183961
In: Proceedings of SPIE, the International Society for Optical Engineering. SPIE: Bellingham, WA. ISSN 0277-786X; e-ISSN 1996-756X
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Documenttype: Congresbijdrage
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| Auteurs | | Top |
- Gomaa, W.
- El-Sherif, A.F.
- El-Sharkawy, Y.H.
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| 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. |
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