Evaluation of GOCI Rrs data retrieved from GOCI Level 1B data using the correction of inter-slot

Abstract

GOCI image has a radiometric stray light, called as inter-slot radiometric discrepancy (ISRD), which means radiometric inconsistency between the adjacent slots. The Correction of Interslot radiometric Discrepancy Using the Minimum noise fraction transform, namely CIDUM, is in effect to reduce ISRD in the GOCI Level 1B. This research evaluates for reduction of horizontal ISRD in remote sensing reflectance (Rrs) data, which is retrieved from GOCI Level 1B data corrected byCIDUM. Atmospheric correction is performed by GOCI Data Processing System (GDPS) V.2.0. For the evaluation the bottom image in ISRD area where northern and southern images are overlapped is assumed as reference data. The horizontal discrepancy is mitigated in all ISRD area and the differences between upper- and bottom- slots becomes close to 0. But it doesn’t work for blue bands effectively.