The invention discloses a
satellite-ground cooperative wide-area real-time communication
system and a communication method thereof, and relates to the technical field of
satellite-ground cooperative communication, and the communication method comprises the following steps: deploying a
satellite-ground cooperative network, configuring initial link parameters and node identifiers of a satellite and a
ground station, and establishing a link state table; the link state data in the link state table are fed back to the control end, and the control end calculates a link comprehensive
score based on the link state data; according to the real-time
optical communication channel state and the interference condition, the
light beam direction is dynamically adjusted,
communication channel reconstruction is carried out, and the optimal
optical communication channel is selected; transmitting the encoded
data stream to a receiving end through the optimal
optical communication channel, and decoding the encoded
data stream by the receiving end through a decoder to generate link
quality data; and updating the link state table according to the link
quality data. Based on the real-time optical
communication channel state and the interference condition, the
light beam direction is dynamically adjusted, the
communication channel is reconstructed, the optimal transmission path of the channel is ensured, and therefore the
signal transmission quality and the
bandwidth utilization rate are improved.