MODIS和NOAA/AVHRR植被指数差异初步分析  

Preliminary Analysis of Difference Between MODIS and NOAA/ AVHRR Vegetation Indices

作　　者：程乾[1] 黄敬峰[1] 王人潮[1] 

机构地区：[1]浙江大学农业遥感与信息技术研究所,杭州3210029

出　　处：《科技通报》2005年第2期205-209,共5页Bulletin of Science and Technology

基　　金：国家自然科学基金资助项目(No.40171065)国家863子课题(2002AA243011)

摘　　要：本文基于中分辨率成像光谱仪(MODIS)和NOAA/AVHRR影像数据分析了植被指数(Ⅵ)的差异性。分别选取浙江省2002年9月2日MODIS和NOAA/AVHRR遥感影像,计算分析了浙江省全省和仙居县MODIS和NOAA/AVHRR的植被指数。结果表明,MODIS增强植被指数(EVI)同MODIS-NDVI相比,倾向于低值部分,呈现正态分布,不容易饱和,适宜于高生物量群体的监测:MODIS-VI及NOAA/AVHRR-NDVI相比不容易饱和。The difference of vegetation indices of NOAA/AVHRR and the Moderate Resolution Imaging Spectroradimeter (MODIS) were reported in this paper. NOAA/AVHRR and MODIS data of September 2,2002 covering the whole of Zhe-jiang Province and Xianju Country were acquired respectively and the vegetation indices of NOAA/AVHRR and MODIS were calculated. The results showed that the MODIS-EVI showed the same histogram structure with MODIS-NDVI, but was biased toward the lower end of the Ⅵ dynamic range, and tended to maintain normal distribution of Ⅵ values over such high biomass conditions. MODIS-NDVI satu-rated for high Ⅵ values while the MODIS-EVI demonstrated improved sensitivity for high biomass.

关 键 词：摄影测量与遥感技术 NOAA/AVHRR MODIS NDVI EVI 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置] S127[自动化与计算机技术—控制科学与工程]