Novel underwater 3D-target design for measurement of depth of gating (DOG) in underwater lidar imaging (UWLI)

Duo-Min He; Gerald G. L. Seet

doi:10.1117/12.482185

4 September 2002 Novel underwater 3D-target design for measurement of depth of gating (DOG) in underwater lidar imaging (UWLI)

Duo-Min He, Gerald G. L. Seet

Author Affiliations +

Proceedings Volume 4768, Novel Optical Systems Design and Optimization V; (2002) https://doi.org/10.1117/12.482185
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

When doing underwater lidar imaging (UWLI) in highly turbid water, its ICCD camera must be set in fast-gating status. As less than 50 ns, most gated-ICCD will become non-linear, which is difficult to be tested. In order to evaluate fast- gating performance in UWLI, we suggest a new technical term Depth of Gating (DOG) for depicting fast-gating feature of UWLI system, and design a novel underwater 3D-target for taking on DOG measurement. Our underwater 3D-target consists of a series of three bar test targets (five in total) at intervals of 22.5 cm roughly along, but separated on a section across, the laser illumination direction. The gap between two round trip times to two neighbor targets is 2ns for 22.5 cm interval, 4ns for (22.5 cm X 2) interval, etc. since the light speed in water is 22.5 cm/ns. From our experimental study, it is shown that using the underwater 3D-target designed in such a way is a practical and efficient method to measure short DOG value in UWLI system. We may simply name it 'underwater DOG-target.'

Citation Download Citation

Duo-Min He and Gerald G. L. Seet "Novel underwater 3D-target design for measurement of depth of gating (DOG) in underwater lidar imaging (UWLI)", Proc. SPIE 4768, Novel Optical Systems Design and Optimization V, (4 September 2002); https://doi.org/10.1117/12.482185

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

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
12 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Cameras

LIDAR

Underwater imaging

Submerged target modeling

Data transmission

Image enhancement

Imaging systems

Show All Keywords

Keywords/Phrases

Search In:

Publication Years