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为了满足大容量、高速率、多载荷数据的传输需要,风云三号气象卫星数据传输系统采用了空间数据系统咨询委员会CCSDS(Consultative Committee for Space Data Systems)推荐使用的高级在轨系统AOS(Advanced Orbiting System)标准,利用虚拟信道的概念,将不同速率、不同性质的载荷数据按AOS多路复用业务和位流业务两种业务处理。实际运行结果表明,采用这两种业务既可以满足卫星多种高速传输速率的要求,又可满足多载荷不同数据量、不同数据格式的传输要求。在分析CCSDS AOS协议的基础上,介绍了风云三号气象卫星所采用的数据编码格式及组帧方式。
In order to meet the needs of large-capacity, high-speed and multi-payload data transmission, Fengyun III meteorological satellite data transmission system adopts advanced Orbiting (Advanced Orbiting) recommended by the Consultative Committee for Space Data Systems (CCSDS) System) standards, the concept of virtual channel, the different rates, different nature of the payload data by AOS multiplexed services and bit stream business two business processing. The actual operating results show that the use of these two services can meet the requirements of a variety of high-speed satellite transmission rates, but also to meet the multi-load different data volumes, different data formats, transmission requirements. Based on the analysis of CCSDS AOS protocol, this paper introduces the data encoding format and framing method adopted by Fengyun III meteorological satellite.