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19 November 2014 FY3C IRAS on-orbit performance and measurements validation
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Fengyun-3C (FY3C) launched on 23 Sep, 2013 and InfraRed Atmospheric Sounder (IRAS) start to work on 30 Sep. Verification of instrument performance is an essential step before the L1 data distributed operationally. Verification performance including: BlackBody temperature, channel noises, radiance data assessment, Geo-location evaluation, instrument parameters trending, et al. Noise Equivalent Differential Radiance (NEdN) of all IR channels meet specification and got improvement on FY3B. IRAS L1 data are evaluated with Infrared Atmospheric Sounding Interferometer (IASI) measurements onboard European MetOp-A satellite using cross comparison method, biases are within 1K for all IR channels except ch1 and ch9. Trends of instruments components temperature are also discussed.
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Chengli Qi, Hanlie Xu, and Dekui Yin "FY3C IRAS on-orbit performance and measurements validation", Proc. SPIE 9264, Earth Observing Missions and Sensors: Development, Implementation, and Characterization III, 926409 (19 November 2014);

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