Accounting for atmospheric and terrestrial obstacles in geographic positioning
First Claim
1. A method implemented in a computing system on one or more processors for identifying potentially erroneous position fixes of a receiver, the method comprising:
- receiving a position fix for the receiver, wherein the position fix was generated using a plurality of signals received at the receiver from respective high-altitude signal sources, and wherein the position fix identifies a geographic location;
requesting obstacle specified imagery of a geographic area associated with the geographic location;
receiving the obstacle specified imagery of the geographic area , wherein transitory imagery is received exclusively when transitory imagery is the obstacle specified imagery requested and persistent imagery, which is different from the transitory imagery, is received exclusively when persistent imagery is the obstacle specified imagery requested;
automatically processing the received obstacle specified imagery to determine whether one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated; and
in response to determining that one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated, identifying the position fix as potentially erroneous.
2 Assignments
0 Petitions
Accused Products
Abstract
A position fix identifying a geographic location of a receiver is received. The position fix was generated using signals received at the receiver from respective high-altitude signal sources (such as satellites). Imagery of a geographic area that includes the geographic location is also received. The imagery is automatically processed to determine whether one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated. In response to determining that one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated, the position fix is identified as being potentially erroneous.
24 Citations
19 Claims
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1. A method implemented in a computing system on one or more processors for identifying potentially erroneous position fixes of a receiver, the method comprising:
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receiving a position fix for the receiver, wherein the position fix was generated using a plurality of signals received at the receiver from respective high-altitude signal sources, and wherein the position fix identifies a geographic location; requesting obstacle specified imagery of a geographic area associated with the geographic location; receiving the obstacle specified imagery of the geographic area , wherein transitory imagery is received exclusively when transitory imagery is the obstacle specified imagery requested and persistent imagery, which is different from the transitory imagery, is received exclusively when persistent imagery is the obstacle specified imagery requested; automatically processing the received obstacle specified imagery to determine whether one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated; and in response to determining that one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated, identifying the position fix as potentially erroneous. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computing system comprising:
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one or more processors; and a computer-readable medium communicatively coupled to the one or more processors and storing a plurality of instructions that, when executed by the one or more processors, cause the computing system to; receive a position fix for the receiver, wherein the position fix was generated using a plurality of signals received at a receiver from respective high-altitude signal sources, and wherein the position fix identifies a geographic location; request obstacle specified imagery of a geographic area associated with the geographic location; receive the obstacle specified imagery of the geographic area associated with the geographic location, wherein transitory imagery is received exclusively when transitory imagery is the obstacle specified imagery requested and persistent imagery, which is different from the transitory imagery, is received exclusively when persistent imagery is the obstacle specified imagery requested; automatically process the received obstacle specified imagery to determine whether one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated; and in response to determining that one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated, identify the position fix as potentially erroneous. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification