METHOD AND SYSTEM FOR CONTROLLING ANTENNA OF MOBILE COMMUNICATION APPLICATION SYSTEM BASED ON DOUBLE QUATERNIONS IN MEMS INERTIAL NAVIGATION

摘要

A method for controlling an antenna of a mobile communication application system based on double quaternions in MEMS inertial navigation. The method comprises: introducing an antenna control quaternion based on a navigation attitude quaternion; in each interrupt cycle of a navigation computer, updating the two quaternions respectively using a carrier system measured by a gyroscope relative to a rotation vector of an ideal platform coordinate system; in each filter cycle, correcting the error of the navigation attitude quaternion respectively using a Kalman filter; according to the relationship between the attitudes determined by the two attitude quaternions, determining the angular speed in an antenna control instruction; and finally, driving a servo system to rotate at an antenna servo control angle converted by an antenna control quaternion attitude. A system for controlling an antenna of a mobile communication application system based on double quaternions in MEMS inertial navigation can achieve the accurate control of the directivity of an antenna of a mobile communication application system using the control method as a control flow. The present invention can effectively prevent the servo system of the antenna of the mobile communication application system from being impacted by the instable navigation attitude quaternion in the transient process of the Kalman filter, thereby effectively shortening the satellite aiming time of the mobile communication application system.