摘要
提出了一种基于短波红外(SWIR,short wave infrared)波段离水反射率为0的Ⅱ类水体大气校正算法.采用MODIS的1.240μm和1.640μm两个SWIR波段的反射率计算出了可见光及近红外(NIR,near infrared)波段气溶胶散射反射率,进而反演得到了这些波段的离水反射率.应用该算法对中国东部近海及湖泊的Ⅱ类水体进行了大气校正,并与实测数据和常用的大气校正算法进行了比较分析,结果表明该算法能够有效地去除大气的影响.
An atmospheric correction algorithm based on zero water leaving reflectance in short wave infrared （SWIR） bands for case Ⅱ waters was presented. It used two SWIR bands of MODIS（1.240μm and 1.640μm） to extrapolate the aerosol scattering reflectances of visible and near infrared （ NIR ） bands. Then water leaving reflectances in visible and NIR bands could be retrieved. This algorithm was tested over coastal waters and lakes in the east part of China. The correction results were compared with both in situ measurement data and those by other atmospheric correction algorithms. The results show that the algorithm removes the effects of atmosphere effectively.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第5期346-349,共4页
Journal of Infrared and Millimeter Waves
基金
国家863计划(2006AA06Z419)
中科院重大交叉项目(KZCX1-YW-14-2)
国家自然科学基金(40671141
40701126)
中国科学院遥感应用研究所遥感科学国家重点实验室开放基金项目
关键词
MODIS
大气校正
Ⅱ类水体
短波红外
MODIS
atmospheric correction
case II waters
short wave infrared （SWIR）
