The Performance of Microwave Sounders Board on FY-3C Satellite

FY-3C is the first satellite of Chinese second generation operational polar orbiting meteorological satellite series.Three passive microwave instruments are on board the FY-3C satellite:MWRI is just following the design of FY-3A/B, MWTS-Ⅱ has made great progress on channels splitting at the oxygen absorbing lines, and MWHTS has not only made more channels at vapor absorbing line, but also designed a new sounding frequency at 118GHz.All those have made great progress at the design stage.In this paper, we give some key points on FY-3C/MWTS-Ⅱ and MWHTS, introduce the performance and design parameters of them.And finally we make an analysis on retrieval and sounding.