Channel simulation for FY-4 AGRI

The FY-4 is the new generation of China's Geosynchronous meteorological satellite, the main payload onboard the satellite is the Advanced Geosynchronous Radiation Imager (AGRI),Geosynchronous Interferometric Infrared Sounder(GΠRS), Lighting Mapping( LMI) and Space Environment Package(SEP).The first experiment satellite FY-4A is scheduled to be launched on 2015. The AGRI will provide an significant advancements over the current FY-2 VISSR in several key areas, including more spectral channel, faster imaging and higher spatial resolution. The AGRI channel performance and top-of-atmosphere (TOA) radiance simulation on Typhoon Sinlaku 2008 will be discussed in this paper.