Spacecraft online application method and system based on communication satellite system

The invention provides a spacecraft online application method and system based on a communication satellite system, and the method is applied to a communication satellite, and comprises the steps: obtaining the use request of any spacecraft in a coverage area in real time; sending the use request to a ground station, so as to enable the ground station to send the use request to an operation control center; and receiving the use plan sent by the ground station, and sending the use plan to the corresponding spacecraft. According to the embodiment of the invention, based on the SMA panoramic beam, the communication satellite can acquire the use request of any spacecraft in the communication range in real time; the received use request is issued to an operation control center in real time, anda corresponding use plan is generated for the use request of each spacecraft by the operation control center, thereby establishing a real-time communication channel between a user center and the spacecraft, realizing real-ti