Establishment of Optical Laboratory For Calibration and Validation of the Field Campaign Equipment

Abstract

Geostationary Ocean Color Imager (GOCI), was launched on June 2010, has been carrying out regular operations since April 2011. It observes, in real time, the seas and coastal area around South Korea and its neighbors such as Japan, China and North Korea. Korea Ocean Satellite Center (KOSC) in Korea Institute of Ocean Science & Technology (KIOST) organizes a calibration and validation (CAL/VAL) community for validation and improvement of the accuracy of satellite data. In addition, for the comparative analysis of the CAL/VAL between the satellite acquisition and field campaign data, field campaigns are in progress by using ASD (Analytical Spectral Devices) at Yellow Sea and East Sea. The CAL/VAL optical laboratory has established for the optical performance characterization of the in-situ ocean optical instruments such as ASD and their variation between before and after field data acquisition, and for the relative correction of them. The laboratory is equipped with a 20 inches integrating sphere (USS-2000S, LabSphere), a reference spectrometer (MCPD9800, Photal) for the relative calibration, and an optical table (3600 × 1500 × 800 mm3) having a flatness of ± 0.1 mm. Furthermore, the numerical simulation systems composited with ZEMAX and ASAP assist to enhance a CAL/VAL accuracy. The ASD instruments calibrated in this laboratory are expected to enable more accurate validation of spaceborna and North Korea. Korea Ocean Satellite Center (KOSC) in Korea Institute of Ocean Science & Technology (KIOST) organizes a calibration and validation (CAL/VAL) community for validation and improvement of the accuracy of satellite data. In addition, for the comparative analysis of the CAL/VAL between the satellite acquisition and field campaign data, field campaigns are in progress by using ASD (Analytical Spectral Devices) at Yellow Sea and East Sea. The CAL/VAL optical laboratory has established for the optical performance characterization of the in-situ ocean optical instruments