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HJ-1CCD数据大气校正方法研究 被引量:22

Atmospheric correction method based on HJ-1 CCD data
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摘要 本文开展了HJ-1CCD相机数据大气校正方法的研究工作。基于辐射传输模型构建了不同大气条件下的大气校正系数查找表;大气校正中用到的气溶胶光学厚度数据基于浓密植被区域红蓝波段地表反射率之间的关系反演得到。与对应当天的MODIS地表反射率数据的对比分析表明,本文提出的大气校正方法具有较高的精度。本文还从气溶胶光学厚度的反演精度、大气水汽含量的变化、辐射定标精度、海拔高度等方面对大气校正的不确定性进行了分析。 We proposed a new atmospheric correction approach for H J-1 CCD datasets, in which the aerosol optical depth (AOD) is acquired based on the relationships between surface reflectance of the blue band and red band over dense dark vegetation (DDV) regions. The atmospheric correction look-up tables (LUTs) were introduced to provide atmospheric correction coefficients under different aerosol loadings and sun-view geometry. The comparison of the results with intraday MODIS (Moderate Resolution Imaging Spectroradiometer) surface reflectance out-puts (MOD09) indicated the proposed atmospheric correction method has preferable accuracy. We did uncertainty analyses from the aspects of AOD retrieval accuracy, radiometric calibration accuracy, altitude impact and atmospheric water vapor con-tent impact.
出处 《遥感学报》 EI CSCD 北大核心 2012年第4期826-836,共11页 NATIONAL REMOTE SENSING BULLETIN
基金 遥感科学国家重点实验室开放基金(编号:2009DFJJ015) 山东科技大学研究生科技创新基金项目(编号:YCA110404)~~
关键词 HJ-1 CCD 大气校正 查找表 地表反射率 MODIS 气溶胶光学厚度 HJ-I CCD, atmospheric correction, look-up tables (LUTs), surface reflectance, MODIS, aerosol optical depth (AOD)
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  • 1TANG Jiakui1, XUE Yong1,2, YU Tong3, GUAN Yanning1, CAI Guoyin1 & HU Yincui1 1. State Key Laboratory of Remote Sensing Science, Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University, Beijing 100101, China,2. Department of Computing, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK,3. Beijing Environmental Monitor Center, Beijing 100044, China.Aerosol retrieval over land by exploiting the synergy of TERRA and AQUA MODIS DATA[J].Science China Earth Sciences,2006,49(6):641-649. 被引量:4
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