Vehicle compass compensation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 4, 2003
Grant Date -
N/A
app pub date -
Mar 31, 2000
filing date -
Apr 8, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A compass compensation system is provided for automatically continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.
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