Range-gated underwater laser imaging system

Georges R. Fournier; Deni Bonnier; J. Luc Forand; Paul W. Pace

doi:10.1117/12.143954

1 September 1993 Range-gated underwater laser imaging system

Georges R. Fournier, Deni Bonnier, J. Luc Forand, Paul W. Pace

Author Affiliations +

Optical Engineering, Vol. 32, Issue 9, (September 1993). https://doi.org/10.1117/12.143954

Abstract

A careful analysis of a scattering and absorption database of the waters off the coasts of Canada shows that a laser-assisted camera system will have a significantly improved viewing performance over conventional systems. The laser underwater camera image enhancer system is a range-gated laser system that can be mounted on a remotely operated vehicle. The system uses a 2-kHz diode-pumped frequency-doubled Nd:YAG laser as an illumination source. The light is collected by a 10-cm-diam zoom lens. The detector is a gated image intensifier with a 7-ns gate and a gain that is continuously variable from 500 to 1,000,000. The system has been tested in a water tank facility at Defence Research Establishment Valcartier and has been mounted on the HYSUB 5000 remotely operated vehicle for sea trials. In the strongly scattering waters typical of harbor approaches, this system has a range of from three to five times that of a conventional camera with floodlights.

Citation Download Citation

Georges R. Fournier, Deni Bonnier, J. Luc Forand, and Paul W. Pace "Range-gated underwater laser imaging system," Optical Engineering 32(9), (1 September 1993). https://doi.org/10.1117/12.143954

Published: 1 September 1993

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE