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The comparative analysis of KOMPSAT-3 based surface normalized difference vegetation index: Application of GeoEye data  

Yeom, Jong-Min (지구관측연구팀)
Publication Information
Aerospace Engineering and Technology / v.13, no.2, 2014 , pp. 80-86 More about this Journal
Abstract
In this study, we the estimated surface normalized difference vegetation index by using the KOrea Multi-Purpose SATellite-3 (KOMPSAT-3) multi-spectral images for comparative analysis. The estimated NDVI from KOMPSAT-3 is used as for comparison with the high resolution GeoEye products. The geometry conditions for atmospheric effects are selected from meta files of KOMPSAT-3 bundle data. The used geometry conditions are consist of solar zenith angle, solar azimuth angle, viewing zenith angle, viewing azimuth angle, and date. And, Atmospheric effects such as attenuation, scattering and absorption were physically simulated from water vapor, ozone and aerosol information. Generally, although ground measurements are important for accurate information, in this study, MODIS atmospheric products are used as atmospheric constituents. The surface reflectance from radiative transfer model is utilized for estimating vegetation index. The present study, to reduce atmospheric and geometry conditions between KOMPSAT-3 and GeoEye having difference observation characteristics, data acquisition time is carefully determined for reliable vegetation spectral characteristics.
Keywords
KOMPSAT-3; GeoEye; vegetation spectral characteristics; NDVI; atmospheric correction;
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