The invention discloses a
satellite link
transmission system and a
satellite link transmission method, and relates to the technical field of
wireless communication, and the
system comprises the steps that a data collection terminal collects and transmits service data and service types, a switching fusion device constructs a plurality of
satellite transmission links after receiving the service data and the service types, and determining transmission
modes corresponding to different satellite numbers,
orbit heights and
retransmission mechanisms according to the satellite link state information, the service types and the service data. The service data is transmitted to the
data analysis center in a transmission mode for decision analysis, and a
decision control instruction is fed back to the
data acquisition terminal for real-time field control. Different transmission
modes are determined by switching the fusion device, and
processing between the terminal and the
data analysis center is carried out. Compared with an existing single high-
orbit satellite transmission mode, important information can be transmitted at a
low speed, the reliability of
information transmission is guaranteed, conventional information can be transmitted at a high speed, the timeliness and transmission efficiency of
signal transmission are guaranteed, and the
utilization rate of satellite resources is increased.