POSITION DETERMINATION USING HORIZONTAL ANGLES
First Claim
1. An access terminal of a wireless communication system, the access terminal comprising:
- a transceiver configured to receive wirelessly a plurality of reference keypoints and a geographical location of each respective reference keypoint, each geographical location being a location near an estimated position of the access terminal;
at least one camera communicatively coupled to the transceiver and configured to capture an image; and
a processor communicatively coupled to the at least one camera and configured to calculate a refined position of the access terminal, that is more accurate than the estimated position, using first and second horizontal angles between the geographical locations of respective first and second pairs of reference keypoints determined as each corresponding to a respective image keypoint identified within the image captured by the at least one camera.
1 Assignment
0 Petitions
Accused Products
Abstract
An access terminal of a wireless communication system includes a transceiver configured to receive wirelessly multiple reference keypoints and a geographical location of each respective reference keypoint, each geographical location being a location near an estimated position of the access terminal; at least one camera communicatively coupled to the transceiver and configured to capture an image; and a processor communicatively coupled to the at least one camera and configured to calculate a refined position of the access terminal, that is more accurate than the estimated position, using first and second horizontal angles between the geographical locations of respective first and second pairs of reference keypoints determined as each corresponding to a respective image keypoint identified within the image captured by the at least one camera.
6 Citations
29 Claims
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1. An access terminal of a wireless communication system, the access terminal comprising:
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a transceiver configured to receive wirelessly a plurality of reference keypoints and a geographical location of each respective reference keypoint, each geographical location being a location near an estimated position of the access terminal; at least one camera communicatively coupled to the transceiver and configured to capture an image; and a processor communicatively coupled to the at least one camera and configured to calculate a refined position of the access terminal, that is more accurate than the estimated position, using first and second horizontal angles between the geographical locations of respective first and second pairs of reference keypoints determined as each corresponding to a respective image keypoint identified within the image captured by the at least one camera. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus configured to determine position of an access terminal of a wireless communication system, the apparatus comprising:
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means for receiving a plurality of reference keypoints and a geographical location of each respective reference keypoint wirelessly at the access terminal, each geographical location being a location near an estimated position of the access terminal; means for determining at least three of the reference keypoints as each corresponding to a respective image keypoint within an image captured by the access terminal; and means for calculating a refined position of the access terminal, that is more accurate than the estimated position, using first and second horizontal angles between the geographical locations of respective first and second pairs of the determined keypoints. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A computer program product comprising:
a processor-readable medium storing processor-readable instructions configured to cause a processor to; receive a plurality of reference keypoints and a geographical location of each respective reference keypoint wirelessly at an access terminal of a wireless communication system, each geographical location being a location near an estimated position of the access terminal; determine at least three of the reference keypoints as each corresponding to a respective image keypoint within an image captured by the access terminal; and calculate a refined position of the access terminal, that is more accurate than the estimated position, using first and second horizontal angles between the geographical locations of respective first and second pairs of the determined keypoints. - View Dependent Claims (17, 18, 19, 20)
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21. A method of determining position of an access terminal of a wireless communication system, the method comprising:
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receiving a plurality of reference keypoints and a geographical location of each respective reference keypoint wirelessly at the access terminal, each geographical location being a location near an estimated position of the access terminal; determining at least three of the reference keypoints as each corresponding to a respective image keypoint within an image captured by the access terminal; and calculating a refined position of the access terminal, that is more accurate than the estimated position, using first and second horizontal angles between the geographical locations of respective first and second pairs of the determined keypoints. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification