Mobile satellite communication is a kind of communication service technology, which has a huge space for development. The emphasis of realizing mobile satellite communication lies in ensuring the communication system work normally under the circumstance of moving vehicles. This paper is about the research of stabilizing servo system aiming at the satellite communication of small-bore parabolic dish. The purpose is to isolate the disturbance from moving vehicles, which will affect the antenna pointing, and keep the antenna in alignment with the satellite to ensure communicating fluently.Firstly, the structure of control system has been discussed, and three-axis stabilized control is adopted which is based on sensors at lower cost, stepping motors, and controller. Also effectiveness indicator faced to satellite communication has been given.
