The invention discloses a multi-
orbit satellite-borne
laser communication
terminal system, comprising an optical
machine body, a tracking and aiming circuit, a communication main
control circuit and a
laser communication
terminal system. The tracking and aiming circuit comprises a
motor drive circuit board, a piezoelectric
ceramic circuit board, a first and second power conversion circuit board, and a tracking and aiming
control circuit board. The communication main
control circuit comprises a main control communication circuit board, a second and second power conversion circuit board, a first optical receiving and transmitting circuit board and a second optical receiving and transmitting circuit board. The
system, as a
satellite payload, completes the establishment of a
communication link with a ground terminal, uses
laser as an information carrier to exchange and transmit information, and performs
satellite-to-ground, inter-satellite and ground terminal laser communications, achieving high
code rate,
miniaturization, light weight and low
occupancy rate requirements, and finally uses a set of optical
transceiver system and tracking and aiming
system to achieve satellite-to-ground, inter-satellite and ground terminal laser communications.