基于资源卫星图像对NDVI进行大气修正的一种简单方法  

A Simple Method for Processing Atmospheric Modification to NDVI Based on Satellite Image of China Brazil Environment Resource Satellite

作　　者：赵巧华[1] 何金海[1] 

机构地区：[1]南京气象学院大气科学系,江苏南京210044

出　　处：《南京气象学院学报》2003年第2期236-242,共7页Journal of Nanjing Institute of Meteorology

基　　金：国家重点基础研究发展规划项目 ( G19980 4 0 90 0 )第一部分

摘　　要：在遥感应用领域 ,植被指数已被广泛用来定性和定量表征植被覆盖度及其生长状况。由于大气变化的影响 ,使植被指数未能真实反映地表植被的真实分布状况 ,造成其应用的局限性。提出了一种简易方法 ,仅通过中巴资源卫星 (CBERS:ChinaBrazil Environment Resoure Satellite)图像的第 3、第 4波段中的水体 ,推算卫星接收到的大气程辐射 ,消除了大气对归一化植被指数 (NDVI:Normalized Differece Vege-tation Index)的影响 ,减小植被指数所受的大气影响。应用结果表明 。In the application of remote sensing,the vegetation index has been widely used to token the coverage and growth of the vegetation qualitatively and quantitatively.Due to the influence of atmospheric variation,the vegetation index cannot reflect the realistic distribution of the vegetation on the earth's surface.A simple method is proposed to eliminate the influence of the atmosphere on Normalized Differece Vegetation Index(NDVI) and reduce the impact of atmosphere on the vegetation index by calculating the path radiation received by the satellite sensor according to the water body of the third and fourth band in the China Brazil Environment Resoure Satellite(CBERS).Results suggest that the vegetion index can reflect the growth and distribution of the vegetation much better by using the method discussed.

关 键 词：资源卫星图像 NDVI 植被指数 植被覆盖度 生长状况 大气变化 程辐射 

分 类 号：P422[天文地球—大气科学及气象学] P407