Nonstationary optical transfer functions of underwater imaging systems

被引:5
|
作者
Luchinin, Alexander G. [1 ]
Kirillin, Mikhail Yu. [1 ]
机构
[1] Russian Acad Sci, Inst Appl Phys, 46 Ulyanov St, Nizhnii Novgorod 603950, Russia
关键词
LIGHT-BEAM; WATER;
D O I
10.1364/AO.56.007518
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Optical transfer functions of underwater imaging systems employing narrow pulses or sinusoidally modulated beams for image formation are studied. A modified Monte Carlo technique allowing for direct statistical modeling of these functions accounting for temporal dispersion is proposed and implemented. The optical transfer functions are calculated for various modulation frequencies of the illumination beam and for the case of pulsed illumination. The employment of high-frequency sinusoidal or pulsed modulation with consistent processing of the received signal is shown to significantly increase the contrast sensitivity of underwater imaging systems as compared with systems with stationary illumination. (C) 2017 Optical Society of America
引用
收藏
页码:7518 / 7524
页数:7
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