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激光散斑效应对激光雷达探测性能的影响
Alternative TitleRough surfaces induced speckle effects on detection performance of pulsed laser radar
郭冠军; 邵芸; 北京8701信箱
Department国家863计划微波遥感技术实验室
Source Publication物理学报
2004
Volume53Issue:7Pages:2089-2093
ISSN1000-3290
Language中文
Keyword激光雷达 激光散斑 探测概率
Abstract分析了激光散斑效应对激光雷达探测性能的影响 .给出了远场情况下接收物镜所采集激光散斑数的表达式 .在物镜所采集的散斑和光电子数均较大情况下 ,提出了光电子所遵守的分布 .分别导出了机载和星载激光雷达的探测概率 .分析表明激光雷达探测性能与所采集的散斑数密切相关 ,接收的散斑数仅与激光束腰和物镜的口径有关 ,随着接收散斑数的增加 ,散斑噪声的影响将减弱 .
Other AbstractThe statistical performance of detecting optically rough surfaces with pulsed laser radar using energy detection techniques has been investigated in this paper. Under the far field condition,the analytical expressions for computing the speckle number integrated by the receiving aperture is presented,and the speckle number subtended饰the telescope is found to be dependent only on the relative size of the laser beam waist and the area of the entrance pupil. A new statistics for photoelectron counts is proposed when the receiving telescope collects a large number of speckle cells and photoelectrons. The detection probabilities for airborne and space-based laser radar have been derived. The results indicate that the laser radar performance is closely related to the speckle number observed by the receiving aperture and the influence of the speckle noise is abated with the increase of integrated speckle cells.
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1849
Collection微波遥感部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
郭冠军,邵芸,北京8701信箱. 激光散斑效应对激光雷达探测性能的影响[J]. 物理学报,2004,53(7):2089-2093.
APA 郭冠军,邵芸,&北京8701信箱.(2004).激光散斑效应对激光雷达探测性能的影响.物理学报,53(7),2089-2093.
MLA 郭冠军,et al."激光散斑效应对激光雷达探测性能的影响".物理学报 53.7(2004):2089-2093.
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