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http://dx.doi.org/10.7780/kjrs.2016.32.5.10

Radiometric Cross Validation of KOMPSAT-3 AEISS  

Shin, Dong-yoon (Department of Spatial Information Engineering, Pukyong National University)
Choi, Chul-uong (Department of Spatial Information Engineering, Pukyong National University)
Lee, Sun-gu (Ground System Development Team, Korea Aerospace Research Institute)
Ahn, Ho-yong (Department of Spatial Information Engineering, Pukyong National University)
Publication Information
Korean Journal of Remote Sensing / v.32, no.5, 2016 , pp. 529-538 More about this Journal
Abstract
This study, multispectral and hyperspectral sensors were utilized to use radiometric cross validation for the purpose of radiometric quality evaluation of a 'KOMPSAT-3'. Images of EO-1 Hyperion and Landsat-8 OLI sensors taken in PICS site were used. 2 sections that have 2 different types of ground coverage respectively were selected as the site of cross validation based on aerial hyperspectral sensor and TOA Reflectance. As a result of comparison between the TOA reflectance figures of KOMPSAT-3, EO-1 Hyperion and CASI-1500, the difference was roughly 4%. It is considered that it satisfies the radiological quality standard when the difference of figure of reflectance in a comparison to the other satellites is found within 5%. The difference in Blue, Green, Red band was approximately 3% as a comparison result of TOA reflectance. However the figure was relatively low in NIR band in a comparison to Landsat-8. It is thought that the relatively low reflectance is because there is a difference of band passes in NIR band of 2 sensors and in a case of KOMPSAT-3 sensor, a section of 940nm, which shows the strong absorption through water vapor, is included in band pass resulting in comparatively low reflectance. To overcome these conditions, more detailed analysis with the application of rescale method as Spectral Bandwidth Adjustment Factor (SBAF) is required.
Keywords
Cross Validation; KOMPSAT-3; Landsat-8; TOA Reflectance;
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Times Cited By KSCI : 4  (Citation Analysis)
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