卫星遥感数字图像的非均匀大气修正研究

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 成都山地所知识仓储（2009年以前）

	卫星遥感数字图像的非均匀大气修正研究
	李先华 1; 兰立波 1; 黄雪樵 1; 池天河 2; 王小平 2
刊名	遥感技术与应用
	1994
卷号	9 期号:2 页码:1-7
关键词	遥感数字图像大气修正
ISSN号	1004-0323
其他题名	Study for the Inhomogenous Atmos‘pheric Correction on Digital Image of Remote Sensing
通讯作者	李先华
合作状况	国内
中文摘要	总结了各种传统卫星遥感数字图像的大气修正方法。讨论了逐点计算卫片像元的大气程辐射遥感值和大气光谱透过率的方法和原理，并在此基础上提出一个适合于非均匀大气的、包括大气程辐射和大气光谱透过等修正内容的卫星遥感数字图像广义大气修正模式。
英文摘要	It is possible that the atmospheric transmittances and path radiances are different ondifferent points of the same satellite photograph, because densities of compositions of allkinds and gas sols in atmosphere and atmospheric conditions in a larger scale are not uni-form. So the useful information from the ground surface suffer from disturbances, Themethods for eliminating these distutbances are the atmospheric corrections for the remotesensing data.An atmospheric model,which corrects the MSS data by using the data practically ob-served the spectrums of many points on the ground surface,is advanced in the paper.National Laboratory of Resources&Envlronment Information System,Institute of Geography,Chinese AcademyofSciences The atmospheric correction questions are divided into the path radiance correction and atmospheric transmittance correction in the model. The keys to the model are that many points having controlling functions are selected in the same satellite photograph,and its ground illuminances and albedoes of the surface features are measured at the same time of imagery, the path radiance components DA and C of the direct proportion with the atmo-spheric transmittances on these points are gotten by the formula raised in the paper. Theri D_A and C of all picture elements are imitated to get by the simulation camber method.After correction,brightness values of the picture element D_Aij are obtained ,namely:DN’_ij(D_A)=C_ij DN_ij(D_A)=C_ij(DN_ij-D_Aij)DN”_ij=C_ij DN’_ij=C_ij(DN_ij-D_Aij)where C_ij is the atmospheric correction coeHicient of the picture element;DN_ij is the primary brightness. Supposed that:τ’=max(τ_ij(i=1,2,···,m;j=1,2,···,n)),C_ij=τ’/τ_ij Where rij is the atmospheric transmittance of the picture element.The satellite photo-graph is dealt with point by point,and brightness of all picture elements are converted into these under a uniform atmosphere(maximum transmittance),the obtained data are nor-malized and taken integer,and the atmospheric correction for the satellite photographs are completed.
学科主题	TP75
分类号	TP751
资助信息	国家自然科学基金“地理信息系统支持下的贡嘎山冰川，植被遥感动态研究”,国家重点实验室
语种	中文
公开日期	2011-03-23
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/2847]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）成都山地灾害与环境研究所_数字山地与遥感应用中心
作者单位	1.中国科学院成都山地灾害与环境研究所 2.中国科学院地理研究所资源与环境信息国家重点实验室
推荐引用方式 GB/T 7714	李先华,兰立波,黄雪樵,等. 卫星遥感数字图像的非均匀大气修正研究[J]. 遥感技术与应用,1994,9(2):1-7.
APA	李先华,兰立波,黄雪樵,池天河,&王小平.(1994).卫星遥感数字图像的非均匀大气修正研究.遥感技术与应用,9(2),1-7.
MLA	李先华,et al."卫星遥感数字图像的非均匀大气修正研究".遥感技术与应用 9.2(1994):1-7.