基于NOAA卫星图像信息的大气辐射校正方法研究  

A Research on Atmospheric Radiation Correction Method Based on NOAAY Satellite Image Information

作　　者：李金萍[1] 刘自强[1] 余英[1] 张伟伟[2] 

机构地区：[1]东华理工大学软件学院,江西南昌330013 [2]东华理工大学数学与信息学院,江西南昌330013

出　　处：《红外技术》2008年第6期316-320,共5页Infrared Technology

基　　金：江西省数字国土重点实验室开放基金研究项目(DLLJ200610)

摘　　要：探讨一种基于NOAA卫星图像信息的大气辐射校正方法。选用实测的海陆边界表面大气水汽压eD,并合理选择海陆分界表面物体的发射率ε,利用图像信息对大气影响进行校正。由于采用同一时刻、同一条件下图像大气辐射信息,该方法具有时效性。并用该方法选取NOAA卫星图像中海陆边界区域进行反演试验,得出该方法是正确可行的。同时利用大气辐射传输模型MODTRAN程序,选定了几种大气模式,设定1976年美国标准大气作为标准,进行了算法间的对比分析。分析结果表明:该方法校正效果明显,操作简单,实用性强。A method of atmospheric radiation correction based on NOAA satellite image information is presented. The atmosphere hydraulic pressure and the emissivity of the boundary of sea and land are chosen. Then it is corrected by using this method. Because the atmospheric radiation informations of the image are taken at same time and under same condition, this method is prescriptive. Simultaneously, several atmosphere patterns are selected by using atmosphere MODTRAN radiation transmission model program, the different retrieval algorithms are contrasted by presuming the standard atmosphere from America in 1976 as the standard. The fact that derived from study of the boundary of sea and land bear out that the correction method has evident effects and simple operation.

关 键 词：大气校正 反演 通道 海陆边界 

分 类 号：TP721[自动化与计算机技术—检测技术与自动化装置]