Research on Scanning Method in Satellite Laser Communication

Satellite laser communication has high operating frequency and strong direction. It has the advantages of high transmission code rate, small antenna size and strong confidentiality. It is more suitable for high speed and large capacity communication in space. In order to solve the problem of establishing links in satellite laser communication, the paper proposes a hexagonal spiral scanning method with equal number of internal and external scanning circles. The method uses internal and external simultaneous scanning to the uncertain region of capture, and the number of scan circles of inner and outer is equal, this method shortens the time of laser scanning, improves the success rate of satellite communication link establishment, and optimizes the performance of satellite communication system. This paper establishes the theoretical model of the scanning method and verifies the correctness of the proposed model.