Method for guiding launcher by using satellite

The invention belongs to the technical field of airborne launch object guiding, and particularly relates to a method for guiding a launch object by using a satellite, before the launch object is launched, a bidirectional data link is established between the launch object and an aerial carrier, and the launch object establishes a receiving link for receiving satellite information; after the launcher is launched, the launcher flies according to the target information sent by the two-way data link through the aerial carrier; after the launcher launches a preset distance, the launcher receives the target information of the satellite through the receiving link, and returns the information to the aerial carrier through the bidirectional data link; after the carrier receives and confirms that the return information is correct, the bidirectional data chain of the carrier and the launcher is disconnected, and the launcher flies by adopting the target information in the satellite receiving link. A set of guiding proces