CONTROLLER FOR ON-VEHICLE SATELLITE RECEPTION ANTENNA

摘要

PROBLEM TO BE SOLVED: To prevent tracking delay when a vehicle suddenly turns in the satellite tracking using a step tracking. ;SOLUTION: A signal received by an on-vehicle satellite reception antenna 10 enters a controller 26 via a BS tuner 14. When the reception level is a prescribed threshold level or over, the controller 26 conducts the step tracking where the antenna is driven in a direction of increased reception level by swinging the antenna 10 horizontally by a prescribed angular width, When a yaw rate of a vehicle detected by a vibration gyro 18 is a prescribed value or over, no step tracking is conducted but the antenna 10 is driven based on an output of the gyro.;COPYRIGHT: (C)1997,JPO