Methods and apparatus for determining that a train has changed paths
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 16, 2002
Grant Date -
N/A
app pub date -
Jun 1, 2000
filing date -
Sep 10, 1999
priority date (Note) -
Expired
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Abstract
A path determination device is configured to receive measured heading and distance information; determine heading corrections, distance corrections, and residuals utilizing a Kalman filter assuming a selected, known path was taken; and to determine a probability that the selected, known path actually was taken utilizing the determined residuals. The additional information utilized by the Kalman filters provides a more robust measurement indication of whether a particular path is taken than mere measurements and correlations of path curvature.
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