In this study, we propose the calibration algorithm for the solar channel (550 ~ 920 nm) Japanese geostationary satellite MTSAT 1R launched on 26 Feb. 2005. We developed a method utilizing MODIS-derived BRDFs for the solar channel calibration over the bright desert area. Targets are selected based on the desert's brightness, spatial uniformity, temporal stability and spectral stability. The 6S model has been incorporated to account for directional effects of the surface using MODIS-derived BRDF parameters within the spectral interval in interest. Results based on the analysis for the period from 9 to 30 November 2007 suggest that MTSAT-1R solar channel measurements have a high bias up to 8%.