Radiometric calibration experiment of the field campaign equipment for GOCI data validation

Title
Radiometric calibration experiment of the field campaign equipment for GOCI data validation
Author(s)
오은송; 강혁모; 안기범; 조성익; 박영제
KIOST Author(s)
Cho, Seong Ick(조성익)Park, Young Je(박영제)
Publication Year
2014-04-16
Abstract
After launching Geostationary Ocean Color Imager (GOCI) on June 2010, in-situ measurementcampaigns for data calibration and validation were performed many times around Koreanpeninsula. For each field campaign, Korea Ocean Satellite Center (KOSC) has characterizedoptical performance of measurement instruments such as Analytical Spectral Devices (ASD) andTriOS with NIST calibrated light source and reference spectrometer. We, in the paper, introducethe optical laboratory built in KOSC and the relative calibration method for in-situ measurementinstrument. The laboratory is equipped with a 20 inches integrating sphere (USS-2000S,LabSphere) in 98% uniformity, a reference spectrometer (MCPD9800, Photal) covering from360nm to 1100nm with 1.6nm spectral resolution, and an optical table (3600 ´ 1500 ´ 800 mm3)having a flatness of ± 0.1 mm. In the laboratory, the radiometric experiments have controlled in theconstant temperature and humidity condition, and the reference spectrometer and in-situmeasurement instrument have checked the same light source in the same distance. In the results,we figured out a slight difference among in-situ measurement instruments in blue band range, andalso confirmed the changed optical characteristics according to the measurement time andenvironment as well. These results show that the continuous calibrations are needed to maintainthe measurement accuracy and GOCI der (KOSC) has characterizedoptical performance of measurement instruments such as Analytical Spectral Devices (ASD) andTriOS with NIST calibrated light source and reference spectrometer. We, in the paper, introducethe optical laboratory built in KOSC and the relative calibration method for in-situ measurementinstrument. The laboratory is equipped with a 20 inches integrating sphere (USS-2000S,LabSphere) in 98% uniformity, a reference spectrometer (MCPD9800, Photal) covering from360nm to 1100nm with 1.6nm spectral resolution, and an optical table (3600 ´ 1500 ´ 800 mm3)having a flatness of ± 0.1 mm. In the laboratory, the radiometric experiments have controlled in theconstant temperature and humidity condition, and the reference spectrometer and in-situmeasurement instrument have checked the same light source in the same distance. In the results,we figured out a slight difference among in-situ measurement instruments in blue band range, andalso confirmed the changed optical characteristics according to the measurement time andenvironment as well. These results show that the continuous calibrations are needed to maintainthe measurement accuracy and GOCI d
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26380
Bibliographic Citation
ISRD 2014, pp.1, 2014
Publisher
대한원격탐사학회
Type
Conference
Language
English
Publisher
대한원격탐사학회
Related Researcher
Research Interests

Development of Ocean Satellites and Data Analytics,해양위성 및 영상분석 실용화 기술 개발

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse