Apparatus for correcting the detected heading of a vehicle

Details Apparatus for correcting the detected heading of a vehicle Apparatus for correcting the detected heading of a vehicle

1994-06-21

1995-11-21

Williams, Hezron E.

Communications: electrical

Vehicle position indication

364460, G08G 10969, G06F 1900

Patent

active

054691583

ABSTRACT:
A vehicle heading correcting apparatus comprising a gyro, an integrating unit for integrating output data of the gyro, a global positioning system receiver, an acquisition unit for acquiring heading data of a vehicle supplied from the global positioning system receiver, a first computing unit for computing a first turning angle of the vehicle based on two consecutive data of the heading data acquired by the acquisition unit, a second computing unit for computing a second turning angle of the vehicle based on an integrated value of the output data of the gyro obtained by the integrating unit during a period of time that the two consecutive data are acquired, an offset computing unit for computing a difference between the first and second turning angles and for computing an offset value of the output data of the gyro by diving the difference by the period of time, and an offset correcting unit for correcting the output data of the gyro with the offset value calculated by the offset computing unit.

REFERENCES:
patent: 4680715 (1987-07-01), Pawelek
patent: 5115238 (1992-05-01), Shimizu
patent: 5117363 (1992-05-01), Akiyama
patent: 5119301 (1992-06-01), Shimizu
patent: 5124924 (1992-06-01), Fukushima
patent: 5179519 (1993-01-01), Adachi
patent: 5343512 (1994-08-01), Wang
Patent Abstracts of Japan, vol. 015, No. 449, 14 Nov. 1991.

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