System and method for sensor based environmental model construction
First Claim
Patent Images
1. A method comprising:
- determining an estimated location of a vehicle;
measuring a location of an object relative to the vehicle using a sensor associated with the vehicle, wherein the measured relative object location includes the object'"'"'s angle from the vehicle;
determining an updated vehicle location corresponding to a current sub-map using the measured relative object location in conjunction with previously stored object locations, wherein each of the previously stored object locations is measured relative to an origin of a sub-map, wherein the sub-map overlaps at least one adjacent sub-map by a common landmark;
correlating the origin of the current sub-map and the origin of at least one adjacent sub-map using the common landmark as a reference point; and
updating a location of another object in the adjacent sub-map based on the correlation of the current sub-map and the adjacent sub-map.
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Abstract
A method and system may determine the estimated location of a vehicle, measure a location of an object relative to the vehicle using a sensor associated with the vehicle, and determine an updated vehicle location using the measured relative object location in conjunction with previously stored object locations. The estimated vehicle location may be determined using a system different from that associated with the sensor, for example a GPS system. The object location may be measured relative to a sub-map corresponding to the location of the vehicle.
89 Citations
20 Claims
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1. A method comprising:
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determining an estimated location of a vehicle; measuring a location of an object relative to the vehicle using a sensor associated with the vehicle, wherein the measured relative object location includes the object'"'"'s angle from the vehicle; determining an updated vehicle location corresponding to a current sub-map using the measured relative object location in conjunction with previously stored object locations, wherein each of the previously stored object locations is measured relative to an origin of a sub-map, wherein the sub-map overlaps at least one adjacent sub-map by a common landmark; correlating the origin of the current sub-map and the origin of at least one adjacent sub-map using the common landmark as a reference point; and updating a location of another object in the adjacent sub-map based on the correlation of the current sub-map and the adjacent sub-map. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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a database storing previously collected information on the location of objects, wherein each of the object locations is determined relative to an origin of a sub-map, wherein the sub-map overlaps at least one adjacent sub-map by a common landmark and wherein the origin of the sub-map and the origin of at least one adjacent sub-map are correlated using the common landmark as a reference point; a vehicle location detection system; a sensor; a controller to; determine an estimated location of a vehicle from the vehicle location detection system; measure the location of an object relative to the vehicle using the sensor, wherein the measured relative object location includes the object'"'"'s angle from the vehicle; determine an updated vehicle location corresponding to a current sub-map using the measured relative object location in conjunction with the previously stored object locations; and update a location of another object in the adjacent sub-map based on the correlation of the current sub-map and the adjacent sub-map. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method comprising:
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in a vehicle, evaluating a geographic position of a landmark relative to a position of the vehicle using a sensor associated with the vehicle, wherein the landmark position is evaluated relative to an origin of a current sub-map, the current sub-map overlapping at least one adjacent sub-map by a common landmark, wherein the origin of the current sub-map and the origin of at least one adjacent sub-map are correlated using the common landmark as a reference point; calculating a geographic position of the vehicle using the evaluated landmark positionz and updating a location of an object in the adjacent sub-map based on the correlation of the current sub-map and the adjacent sub-map. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification