THE INFRARED ATMOSPHERIC SOUNDER ONBOARD FY-3A SATELLITE

摘要

FY-3Am eteorological satellite is the second generation of polar -orbit meteorological satellite in China which plans to be launched in May , 2008. It loads 11 instruments and some new instrum ents are carried for the first time. IRAS is one of the atmospheric vertical sounding instrum ents, its aim is providing multi-channel brightness temperature that in the spectra 1 ra nge of visi ble to long -wave infrared for direct radiance assimilation and retrievals of global arm ospheric temperature profiles, humidity profiles, ozone column contents, cloud param eters ,etc. The spectr al channels and instru ment configuration of IRAS are designed sim ilar to HIRS instrum ent that onboard NOAA polar-orbit satellite series. This paper give a introduction about IRAS de signed instrument configuration, and some pre-launch study results about system spectral response function, laboratory infrared radiometric calibration, laboratory visible and near infrared integrating sphere calibration.