Instrument for collimating and expanding Gaussian beams for underwater laser imaging systems

1998 ◽  
Vol 37 (9) ◽  
pp. 2467 ◽  
Author(s):  
Xueming Liu
Keyword(s):  
Imaging Systems ◽  
Gaussian Beams ◽  
Laser Imaging ◽  
Underwater Laser

Modeling and simulation of range-gated underwater laser imaging systems

2009 ◽  
Author(s):  
Lei Wu ◽  
Yue Shen ◽  
Gaoping Li ◽  
Chao Chen ◽  
Hongru Yang
Keyword(s):  
Modeling And Simulation ◽  
Imaging Systems ◽  
Laser Imaging ◽  
Underwater Laser

Performance Enhancement of Gain-Modulated 3D Imaging System by Multi-Pulse Accumulation

2013 ◽  
Vol 475-476 ◽  
pp. 259-262
Author(s):  
Fei Wang
Keyword(s):  
3D Imaging ◽  
Performance Enhancement ◽  
Imaging System ◽  
Imaging Systems ◽  
Laser Imaging ◽  
Range Error ◽  
Accumulation Method ◽  
Accuracy Performance

Range accuracy is one of the key parameters for 3D laser imaging systems. A gain-modulated 3D imaging system employing multi-pulse accumulation method is proposed to improve the range accuracy performance. Experiments results show that the range error decreases exponentially with the number of accumulated laser echoes.

Laser-based imaging applications in turbid waters

2019 ◽  
Vol 8 (6) ◽  
pp. 461-467
Author(s):  
Thomas Scholz ◽  
Martin Laurenzis ◽  
Frank Christnacher
Keyword(s):  
Laser Scanning ◽  
Autonomous Underwater Vehicles ◽  
Underwater Vehicles ◽  
Imaging Systems ◽  
Underwater Imaging ◽  
The Past ◽  
Turbid Waters ◽  
Active Imaging ◽  
Underwater Laser ◽  
Processing Techniques

Abstract Underwater laser-based imaging systems and data-processing techniques matured during the past decade. Active imaging systems can, nowadays, be integrated into platforms like remote-operated vehicles (ROV) or autonomous underwater vehicles (AUV). This article gives an overview of different civil and naval applications in underwater imaging with respect to underwater laser scanning (ULS) and laser gated viewing (LGV). Special emphasis has to be given to the environmental conditions, for example, the influence of the local and seasonal dependence of the turbidity with regard to the optical underwater channel. On the basis of tank and sea experiments, advanced techniques for 3D laser oblique scanning (LOS) and possibilities of contrast enhancements for gated viewing are presented.

Underwater Optical Imaging Technology and its Applications

2013 ◽  
Vol 710 ◽  
pp. 408-412
Author(s):  
Rong Zeng ◽  
Jun Hua He ◽  
Pei Lv
Keyword(s):  
Compressive Sensing ◽  
Optical Imaging ◽  
Laser Scanning ◽  
Laser Imaging ◽  
Imaging Technology ◽  
Underwater Laser ◽  
Scanning Imaging

The applications of underwater optical imaging technology are reviewed. The main types of underwater laser imaging technology are introduced, such as underwater laser scanning imaging and underwater distance selected imaging. The respective imaging principle and characteristics are presented. Furthermore, the newest imaging technology, such as underwater compressive sensing imaging technology is described in detail. The recent researching status is included.

Underwater laser imaging experiments in the Baltic Sea

2014 ◽  
Author(s):  
Martin Laurenzis ◽  
Frank Christnacher ◽  
Thomas Scholz ◽  
Nicolas Metzger ◽  
Stefane Schertzer ◽  
...  
Keyword(s):  
Baltic Sea ◽  
The Baltic Sea ◽  
Laser Imaging ◽  
Underwater Laser ◽  
The Baltic

Results of the final tank test of the LLNL/NAVSEA synchronous-scanning underwater laser imaging system

1992 ◽  
Author(s):  
Thomas J. Kulp ◽  
Darrel G. Garvis ◽  
Randall B. Kennedy ◽  
Tom Salmon ◽  
Keith Cooper
Keyword(s):  
Imaging System ◽  
Laser Imaging ◽  
Tank Test ◽  
Underwater Laser

Design and implementation of control system for range-gated underwater laser imaging

2011 ◽  
Author(s):  
Wei-long Ge ◽  
Xiao-hui Zhang ◽  
Hong-wei Han ◽  
Liang-hong Hua
Keyword(s):  
Control System ◽  
Laser Imaging ◽  
Design And Implementation ◽  
Underwater Laser

A novel application of range-gated underwater laser imaging system (ULIS) in near-target turbid medium

2005 ◽  
Vol 43 (9) ◽  
pp. 995-1009 ◽  
Author(s):  
ChingSeong Tan ◽  
Gerald Seet ◽  
Andrzej Sluzek ◽  
DuoMin He
Keyword(s):  
Imaging System ◽  
Turbid Medium ◽  
Laser Imaging ◽  
Underwater Laser
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