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Vehicle position calculation apparatus and method

  • US 6,581,005 B2
  • Filed: 11/14/2001
  • Issued: 06/17/2003
  • Est. Priority Date: 11/30/2000
  • Status: Expired due to Fees
First Claim
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1. A vehicle position calculation apparatus comprising:

  • a vehicle position measuring section measuring a vehicle position;

    a position correcting shape memory section storing road shape data including position correction shapes composed of a group of line segments representing a center of a road and a two-dimensional closed regional shape correlated with a predetermined location on a map; and

    a vehicle position correcting section correcting the vehicle position on the map to be in alignment with a point on corresponding one of the position correction shapes stored in the position correcting shape memory section, wherein the vehicle position correcting section includes;

    a correction reference determination unit determining whether to correct the vehicle position based on a reference of any one of the position correcting shapes stored in the position correcting shape memory section, on the basis of a close proximity or inclusive relationship between the vehicle position and the any one of the position correcting shapes;

    a line segment conformity position correcting unit correcting the vehicle position so as to allow the vehicle position to be aligned onto a point of the line segment which the correction reference determination unit determines as the reference; and

    a regional conformity position correcting unit correcting the vehicle position so as to allow the vehicle position to be aligned onto a point inside the closed regional shape or on a point of a contoured line segment of the closed regional shape which the correction reference determination unit determines as the reference.

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