TECHNIQUES FOR POSITIONING A VEHICLE
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Accused Products
Abstract
A system for determining a location of a vehicle in an environment provided with at least two landmarks whose location is known. The system includes at least one scanning distance sensor installed in the vehicle and configured to measure distance and direction from the vehicle to the at least two landmarks, as well as a data processing device configured to store in its memory the location of the at least two landmarks; and determine the location of the vehicle on the basis of at least the location of the at least two landmarks as well as the distance and direction from the vehicle to the at least two landmarks.
30 Citations
35 Claims
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1-15. -15. (canceled)
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16. A system for determining a location of a vehicle, the system comprising:
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at least one scanning distance sensor installed in the vehicle and configured to measure distance and direction from the vehicle to at least two of a plurality of landmarks, wherein locations of the landmarks is known to the system; a data processing device configured to; store in memory the location of said at least two landmarks; determine an initial location and initial heading of the vehicle based on measured distances and directions to said at least two landmarks, and on a recorded movement and change of heading, if any, between the times the at least two landmarks are observed; and when only one landmark is visible, the data processing device is configured to; record a change in heading and maintain heading data of the vehicle; measure distance and direction to the only one landmark; determine an updated location based on at least the location of said at only one landmark as well as the distance and direction from the vehicle to said only one landmark. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for determining a location of a vehicle, the method comprising:
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using at least one scanning distance sensor installed in the vehicle to obtain distance and direction from the vehicle to at least two of a plurality of landmarks, wherein locations of the landmarks is known to a data processing system; using a data processing system to; store in memory the location of said at least two landmarks; determine an initial location and initial heading of the vehicle based on measured distances and directions to said at least two landmarks, and on a recorded movement and change of heading, if any, between the times the at least two landmarks are observed; and when only one landmark is visible, using the data processing system to; record a change in heading and maintain heading data of the vehicle; measure distance and direction to the only one landmark; determine an updated location based on at least the location of said at only one landmark as well as the distance and direction from the vehicle to said only one landmark. - View Dependent Claims (30, 31, 32, 33, 34)
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35. A software product on a tangible storage medium for a data processing device in a vehicle for determining a location of the vehicle in an environment provided with a plurality of landmarks whose location is known, the vehicle comprising at least one scanning distance sensor installed in the vehicle and configured to measure distance and direction from the vehicle to said at least two landmarks;
which software product controls the data processing device to carry out a method comprising the following steps; storing in memory the location of said at least two of the plurality of landmarks; and determining an initial location and initial heading of the vehicle based on measured distances and directions to said at least two landmarks, and on a recorded movement and change of heading, if any, between the times the at least two landmarks are observed; and when only one landmark is visible; recording a change in heading and maintaining heading data of the vehicle; measuring distance and direction to the only one landmark; determining an updated location based on at least the location of said at only one landmark as well as the distance and direction from the vehicle to said only one landmark.
Specification