A Novel Protocol and Layered Implementation for Spacecraft Telecommand and Device Management

The application of CCSDS telecommand space data link protocol in the Chinese space field is still limited to intra-spacecraft communication recently, and the research on the standardized protocols and layered system architecture which is suitable for inter-spacecraft telecommand data forwarding is still insufficient. In this paper, we introduce a new protocol based on telecommand space data link protocol and a novel layered implementation of the protocol, which enables interpreting and forwarding uplink data, device management command and manual control command through unified protocols, processes and modules. Comparing to traditional protocol and implementation of spacecraft telecommand, the new protocol and corresponding implementation has great advantage in terms of standardization, flexibility and extensibility, and has been applied to a large spacecraft assembly.