Method for correcting position error in navigation system

Details Method for correcting position error in navigation system Method for correcting position error in navigation system

2005-08-16

2005-08-16

Zanelli, Michael J. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

C701S214000, C342S357490

Reexamination Certificate

active

06931322

ABSTRACT:
A method for correcting position error in a navigation system enables one to more accurately match a position measurement of a moving object on a digital map. Particularly, the method comprises the steps of: receiving a current position measurement of a moving object from GPS/DR (Dead Reckoning)-based information; correcting the current location measurement using a displacement-corrected value; performing map matching using the corrected current position measurement; calculating variation of correction angle by extracting a current correction angle out of the map matching result; converting and correcting a previous displacement-corrected value to the current correction angle; and compensating the displacement-corrected value by applying a predetermined constant to the converted displacement-corrected value, and storing the compensated displacement-corrected value.

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patent: 5906653 (1999-05-01), Ichimura et al.
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patent: 6453238 (2002-09-01), Brodie et al.
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Abstract for Japanese Publication No. 2002-213979, published Jul. 31, 2002.
Abstract for U.S. Patent No. 5,394,333, issued Feb. 28, 1995.

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