摘要
对同一区域不同时次的FY-3A/MERSI与MODIS的归一化植被指数(NDVI)和比值植被指数(RVI)进行了计算,并针对地面光谱和影像数据方面进行了分析。结果表明,FY-3A/MERSI比MODIS数据更敏感,但受大气辐射传输影响也更突出,卫星入瞳处的反射率与地面实测资料相比,MERSI比MODIS变化大。FY-3A/MERSI与MODIS植被指数具有很好的相关性,遥感影像植被指数相关系数为0.98(NDVI)和0.96(RVI),地面光谱产生的植被指数(NDVI和RVI)相关性则达到0.99。
The normalized difference vegetation index FY-3A/MERSI and MODIS in the same area but （NDVI）and ratio vegetation index（RVI）from different times were calculated, and ground spectrum and imaging data were analyzed. The results showed that the FY-3A/MERSI data were more sensitive than the MODIS data, and the influence of atmospheric radiative transfer to data of FY-3A/MERSI was also more obvious. Compared with the ground measured spectrum data, the change of reflectivity of the satellite pupil of MERSI was greater than that of MODIS. There was a good correlation relationship between FY-3A/MERSI and MODIS vegetation indexes, the correlation coefficient of remote sensing images was 0.98 （NDVI） and 0.96 （RVI）.The coefficient of vegetation indexes（NDVI and RVI）produced by ground spectral data reached 0.99.
出处
《沙漠与绿洲气象》
2011年第4期49-52,共4页
Desert and Oasis Meteorology
基金
中国沙漠气象科学研究基金项目(Sqj20080015)
国家科技支撑计划项目(2006BAD04B02)
中国气象局关键技术集成项目(CMAGJ2011M59)
新疆气象局科研与技术开发课题<基于数据同化的FY-3/MERSI对TERRA/MODIS典型植被遥感产品替代研究>共同资助
