Methods for GPS to Milepost Mapping
First Claim
Patent Images
1. A method for determining a location of features along a rail road track, the method comprising the steps of:
- (a) determining at least two reference points, the reference points being features of the rail road track;
(b) verifying a GPS location of the reference points, the verification being accomplished by comparing imaging data of the reference points to satellite images of GPS signatures of the reference points;
(c) marking the location of the reference points;
(d) performing mathematical interpolation for at least one feature between the reference points; and
(e) determining the location of the feature between the reference points.
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Abstract
A method to increase the accuracy of the interpolation of railroad mileposts is disclosed. Based upon image data and data provided in customer track charts, reference points are selected along the track, and their location is verified using GPS data. Once verified, the locations of various points between the reference points are determined using mathematical interpolation.
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Citations
12 Claims
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1. A method for determining a location of features along a rail road track, the method comprising the steps of:
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(a) determining at least two reference points, the reference points being features of the rail road track; (b) verifying a GPS location of the reference points, the verification being accomplished by comparing imaging data of the reference points to satellite images of GPS signatures of the reference points; (c) marking the location of the reference points; (d) performing mathematical interpolation for at least one feature between the reference points; and (e) determining the location of the feature between the reference points. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for determining a location of features along a rail road track, the method comprising the steps of:
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(a) determining two reference points, the reference points being features of the rail road track; (b) verifying a location of the reference points; (c) performing mathematical interpolation for at least one feature between the reference points; and (d) determining the location of the feature between the reference points. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification