Space laser communication transmission device and method

The invention discloses a space laser communication transmission device and method. The device comprises a photoelectric tracking module, a signal receiving module, a laser transmitting module, a storage module and a control module, wherein the photoelectric tracking module is used for searching and capturing external signal light; the signal receiving module is used for receiving and demodulatingthe external signal light; the laser transmitting module is used for demodulating the signal into signal light to be output; the storage module is used for storing a signal to be transmitted or a received signal; the control module is connected with each module respectively; and the control module is used for judging the operation states of the signal receiving module, the laser transmitting module, the photoelectric tracking module and the storage module, acquiring state information, and determining the communication mode of the space laser communication transmission device through the acquired state information. Th