CONTROLLER FOR ON-VEHICLE SATELLITE RECEPTION ANTENNA AND SATELLITE TRACKING METHOD

Title:

CONTROLLER FOR ON-VEHICLE SATELLITE RECEPTION ANTENNA AND SATELLITE TRACKING METHOD

Document Type and Number:

Japanese Patent JPH09275315

Kind Code:

A

Abstract:

To correct an offset error of a gyro sensor in the tracking method of on-vehicle satellite reception antenna using the gyro sensor

An antenna 10 is driven to be rotated by a stepping motor 16 and a controller 26 decides a drive amount of the stepping motor 16 based on an output from a vibration gyro 18 and a reception signal intensity from a BS tuner 14. When the reception level is higher, the controller 26 conducts step tracking. When the reception level is at a prescribed level or over for a prescribed time or over, the controller 26 discriminates it that a vehicle is in non-swing state and calculates the mean value of gyro outputs for the time to obtain an offset value. After the offset is calculated, the offset error included in the vibration gyro 18 is corrected and the antenna 10 is driven.

Inventors:

AOSHIMA SHIGEKI
HARADA TOMOYASU

Application Number:

JP15572396A

Publication Date:

October 21, 1997

Filing Date:

June 17, 1996

Export Citation:

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Assignee:

TOYOTA MOTOR CORP
TOYOTA CENTRAL RES & DEV
FUJITSU TEN LTD

International Classes:

G01C17/38; G01S3/42; G01S3/44; G05D3/00; H01Q3/02; (IPC1-7): H01Q3/02; G01C17/38; G01S3/42; G01S3/44; G05D3/00

Attorney, Agent or Firm:

吉田研二（外２名）

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