Theory of underwater LIDAR with a complex modulated illumination beam

被引：13

作者：

Luchinin, A. G. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia

来源：

IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS | 2012年 / 48卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

underwater LIDAR; light beams; wave dispersion; modulation; complex signal; LIGHT-BEAM; SPREAD;

D O I：

10.1134/S0001433812060072

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The main effects accompanying the propagation of an initially narrow complex modulated light beam in sea water are studied. Sea water, with respect to modulation waves, is shown to be similar to a medium with frequency dispersion with respect to electromagnetic waves; in the medium, the effects of the time focusing of a wave packet are possible. Based on the self-similar small-angle solution to the equation of radiation transfer, we estimate spatial-temporal characteristics of pulse-signal amplitude modulated by a complex signal. We propose a scheme for constructing underwater LIDAR using a complex modulated illumination beam and the processing of a received echo signal. The processing allows the separation of the modulated component and its matched filtration. Values of possible delays and broadening of the separated echo signal caused by dispersion properties of sea water are estimated.

引用

页码：663 / 671

页数：9

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