High-availability laser microwave hybrid transmission satellite communication system

The invention provides a high-availability laser microwave hybrid transmission satellite communication system, and relates to the technical field of satellite communication. The system comprises a satellite-borne laser and microwave hybrid terminal and a ground laser and microwave hybrid terminal, realizes laser and microwave hybrid cooperative transmission by adopting microwave and laser to establish link transmission with a ground station at the same time and adopting a satellite-ground system laser and microwave channel estimation and link control mode, and improves the availability of a satellite-ground high-speed link through a microwave link retransmission mode. The method can effectively ensure reliable transmission of satellite-ground communication data, and is particularly suitable for a high-speed data transmission system for high-orbit and low-orbit satellite communication. 本发明提出一种高可用度激光微波混合传输卫星通信系统，涉及卫星通信技术领域。本发明包括星载激光微波混合终端和地面激光微波混合终端，采用微波和激光同时与地面站建链传输，采用星地系统激光微波信道估计及链路控制方式，实现激光微波混合协同传输，并通过微波链路重传