CAJ | 학술논문

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。
대동일구역불동시차적FY-3A／MERSI여MODIS적귀일화식피지수（NDVI）화비치식피지수（RVI）진행료계산，병침대지면광보화영상수거방면진행료분석。결과표명，FY-3A／MERSI비MODIS수거경민감，단수대기복사전수영향야경돌출，위성입동처적반사솔여지면실측자료상비，MERSI비MODIS변화대。FY-3A／MERSI여MODIS식피지수구유흔호적상관성，요감영상식피지수상관계수위0．98（NDVI）화0．96（RVI），지면광보산생적식피지수（NDVI화RVI）상관성칙체도0．99。
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.