Correcting gps through secondary sensors and signal strength
AssigneeMicrosoft Corporation
InventorsMoe Khosravy, Lev Novik
Life of this patent
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Abstract
Systems and methods that mitigate errors in positioning systems, by employing signal strength(s) of signal sources (e.g., towers adjacent to a mobile unit.) Such mitigation system verifies whether the mobile unit receiving GPS data is in static position (e.g., not moving) or is moving (e.g., dynamic position), and evaluates accuracy of the GPS reporting (e.g., discarding GPS data in static position and trusting GPS data in dynamic position.)
Claims20
A computer implemented system comprising the following computer executable components:
- a mobile unit with GPS capabilities;
- and
- an error mitigation system for GPS data associated with the mobile unit, the error mitigation system evaluates signal strength from a signal source(s) to infer a motion of the mobile unit and accept or discard the GPS data based on the motion.
A computer implemented method comprising the following computer executable acts:
- acquiring GPS data by a mobile unit;
- evaluating signal strength from a signal source transmitting to the mobile unit via an error mitigation system;
- and
- accepting or rejecting the GPS data based on the signal strength evaluated by the error mitigation system.
A computer implemented system comprising the following computer executable components:
- means for inferring motion of a mobile unit based on signal strength from a signal source;
- and
- means for mitigating GPS errors associated with motion of the mobile unit based on the signal strengths.
Dependencies are inferred from the claim text.