Vehicle bearing detection and data processing methods applicable to vehicle navigation system
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United States of America Patent
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Dec 26, 1989
Grant Date -
N/A
app pub date -
Oct 27, 1987
filing date -
Oct 27, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides various methods for detecting the bearing of a moving vehicle and of processing data in a vehicular navigation system. Provided there is carried out a process of recognizing the present position of the vehicle while the vehicle is moving at a predetermined speed, bearing data obtained from a prestored map is utilized to determine the present position of the vehicle. At that time, the data output from a terrestrial magnetism sensor, which would otherwise be used, is discarded.
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