期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2010
卷号：XXXVIII - Part 8
页码：91-93
出版社：Copernicus Publications
摘要：GOSAT (Greenhouse gases Observing SATellite) was launched on January 23, 2009. After the initial functional check-out, which was completed in early April 2009, initial calibration was conducted over the following 3 months. Calibration accuracy of the TANSO-FTS was evaluated on radiance, spectral characteristics, and geometry. Radiometric accuracy was evaluated using two methods: onboard calibration and vicarious calibration. Onboard calibration was performed using calibration data. To evaluate the radiometric sensitivity of the sensors, solar irradiances were used for SWIR bands with the Kurucz solar irradiance model. For the TIR band, deep space and blackbody data were used. Vicarious calibration was done to compare the observed radiance of GOSAT with the radiance calculated by Pstar (Ota et al., 2009). As a result of the two methods, the radiometric accuracy of the TANSO- FTS (SWIR) is estimated at 10 percent. The calibrated Level 1B products were released on October 30, 2009. Calibration factors were partly modified and the information on the accuracy of radiometry and geometry was provided for data users
