Adaptive combination navigation antenna beam control method for satellite communication in motion system

The invention discloses an adaptive combination navigation antenna beam control method for a satellite communication in motion communication system. The method comprises the following steps: (1) building a system equation of the satellite communication in motion system, calculating the state variable x of a combination navigation attitude estimation system according to the position error amount deltar of a carrier, the speed error amount deltav of the carrier and the attitude angle error amount Psi of the carrier, and meanwhile setting the observed quantity of a satellite communication in motion combination navigation attitude estimation algorithm with a main controller; (2) building a corresponding satellite communication in motion combination navigation measurement equation according to different driving environments of the carrier, and solving a measurement equation coefficient matrix Hk; and (3) performing attitude computation through adaptive extended Kalman filter to obtain the three-dimensional attitude angle of the carrier, and controlling three motors to adjust the direction of antenna beams according to the three-dimensional attitude angle of the carrier in order that an antenna is aligned with a satellite. Through implementation of the method, accurate alignment between the antenna and the satellite can be realized, and the cost is low.