CCSDS AOS Standard and its Application in China’s Spacecraft[J
- Sun hui-xian, Chen xiao-min
- Spacecraft Engineering,
In this paper, the 640Mbps High Rate Frame Multiplexer of CCSDS Advanced Orbit Systems protocol for China's further space station project is introduced in detail about its protocol, multi-channels control rule, and its transmission control system in CCSDS Principal Network. Confirming CCSDS protocol, the HRFM of 640Mbps realize assigning virtual channels, formatting transfer frame, multiplexing multi-channel data stream, and channel coding for several payload such as video/audio encoder, solid state recorder, and 1553B/1394a bus devices. Then a space-ground data communication system is established by combing 640Mbps CCSDS HRFM, data source devices, High Rate Data Receiver and Processor on ground. Physical system have excellent perform and function parameters, especially obtain QoS perform such as isochronous service, real-time data transfer, minimal transfer delay and skew, so that the developed CCSDS protocol instruments can satisfy many China's further space projection for high rate data communication.