An advanced multi-frequency radiometer for GPM Br Fr mission

This paper presents an advanced multi-frequency radiometer fro the GPM Br Fr mission. This mission will increase the capability of the Megha-Tropiques mission. In addition to the MADRAS channels, this radiometer includes the 183 GHz H2O line and some sub-millimeter wave channels for ice cloud characterization (from 243 GHz up to 664 GHz).