激光散斑效应对激光雷达探测性能的影响

	激光散斑效应对激光雷达探测性能的影响
	郭冠军 ; 邵芸
刊名	物理学报
	2004
卷号	53 期号:7 页码:2089-2093
关键词	激光雷达激光散斑探测概率
ISSN号	1000-3290
其他题名	Rough surfaces induced speckle effects on detection performance of pulsed laser radar
通讯作者	北京8701信箱
中文摘要	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 .
英文摘要	The 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.
学科主题	微波遥感
资助信息	国家高技术研究发展计划
语种	中文
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/1849]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	郭冠军,邵芸. 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.(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.