Enhanced database information for urban navigation
First Claim
1. A method comprising, at a mobile device:
- obtaining three-dimensional geographic information identifying at least one open area and at least a height associated with at least one object adjacent to the at least one open area;
determining at least one pathway in said open area;
determining expected line of sight and expected non-line of sight detections of satellite positioning system (SPS) signals at locations along said pathway based, at least in part, on said three dimensional geographic information;
acquiring one or more signals at a receiver; and
estimating a location of said mobile device based, at least in part, on application of said expected line of sight detections and expected said non-line of sight detections to said acquired signals.
1 Assignment
0 Petitions
Accused Products
Abstract
A mobile device includes a receiver to obtain three-dimensional geographic information identifying at least one open area and at least a height associated with at least one object adjacent to the at least one open area, determine at least one pathway in the open area, and determine expected line of sight and expected non-line of sight detections of satellite positioning system (SPS) signals at locations along the pathway based on the three dimensional geographic information. The mobile device includes a processing unit to estimate a location of the mobile device based on application of the expected line of sight detections and the non-line of sight detections to signals acquired at the receiver.
18 Citations
28 Claims
-
1. A method comprising, at a mobile device:
-
obtaining three-dimensional geographic information identifying at least one open area and at least a height associated with at least one object adjacent to the at least one open area; determining at least one pathway in said open area; determining expected line of sight and expected non-line of sight detections of satellite positioning system (SPS) signals at locations along said pathway based, at least in part, on said three dimensional geographic information; acquiring one or more signals at a receiver; and estimating a location of said mobile device based, at least in part, on application of said expected line of sight detections and expected said non-line of sight detections to said acquired signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A mobile device comprising:
-
a receiver; and at least one processing unit operatively coupled to said receiver and enabled to obtain three-dimensional geographic information identifying at least one open area and at least a height associated with at least one object adjacent to said at least one open area; determine at least one pathway in said open area; determine expected line of sight and expected non-line of sight detections of satellite positioning system (SPS) signals at locations along said pathway based, at least in part, on said three dimensional geographic information; and estimate a location of said mobile device based, at least in part, on application of said expected line of sight detections and expected said non-line of sight detections to signals acquired at said receiver. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. An article comprising a non-transitory computer readable medium having computer implementable instructions stored thereon which if implemented by one or more processing units operatively enables said one or more processing units to:
-
obtain three-dimensional geographic information identifying at least one open area and at least a height associated with at least one object adjacent to said at least one open area; determine at least one pathway in said open area; determine expected line of sight and expected non-line of sight detections of satellite positioning system (SPS) signals at locations along said pathway based, at least in part, on said three dimensional geographic information; and estimate a location of said mobile device based, at least in part, on application of said expected line of sight detections and expected said non-line of sight detections to signals acquired at a receiver. - View Dependent Claims (16, 17, 18, 19, 20, 21)
-
-
22. An apparatus comprising:
-
means for obtaining three-dimensional geographic information identifying at least one open area and at least a height associated with at least one object adjacent to said at least one open area; means for determining at least one pathway in said open area; means for determining expected line of sight and expected non-line of sight detections of satellite positioning system (SPS) signals at locations along said pathway based, at least in part, on said three dimensional geographic information; means for acquiring one or more signals at a receiver; and means for estimating a location of said mobile device based, at least in part, on application of said expected line of sight detections and expected said non-line of sight detections to said acquired signals. - View Dependent Claims (23, 24, 25, 26, 27, 28)
-
Specification