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風雲4號C



距离地球36000公里的赤道上空

4路Ka对地数传通道，每路最高可支持2.4Gbps的传输速率

7种转发通道

DCP数字采样通道，通过数字采样与合成技术，大幅提升了通道的抗干扰能力


風雲4号C星配置6台遥感仪器，其中先进的静止轨道辐射成像仪（AGRI）、干涉式大气垂直探测仪（GIIRS）、闪电成像仪（LMI）为升级换代，太阳极紫外成像仪（SUVI）、多波段电离层紫外光谱成像仪（MUSI）、太阳X-EUV流量计（SXUS）3台全新研制。




FY-4C星相较FY-4B星主要性能提升：


先进的静止轨道辐射成像仪全圆盘由15分钟提升到10分钟，国际首次实现500m真彩色，250m全色的全圆盘探测能力

干涉式大气垂直探测仪空间分辨率提升到8km，时间分辨率提升至1小时，光谱精度由7ppm提升到5ppm，辐射精度由0.7K提升至0.5K

实现全圆盘闪电探测，新增太阳成像和电离层成像观测能力

新增电推进、太阳跟踪、双路Ka数传等，实现高精度控制定位和长寿命稳定业务服务能力



风云四号数据广播系统采用DVB/S2体制广播数据，国内外用户主要用7.3米天线接收其广播的HRIT-H 12 Mbps数据、HRIT-V1 10 Mbps数据，用2.4～3米天线接收HRIT-V2 1 Mbps数据。



Reference 

CNSA

NSMC

Huijiwiki

Gunter

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