Back to results
US 2014/0152494 A1Published application
Elevation Assistance for Location Determination
AssigneeApple Inc.
InventorsGlenn Donald MacGougan, Robert Mayor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeApple Inc.
InventorsGlenn Donald MacGougan, Robert Mayor
Estimating the term…
In some implementations, a tightly-coupled elevation-assisted location estimate can be calculated based on digital elevation model (DEM) elevation measurements and global navigation satellite system (GNSS) data. The DEM elevation measurements and GNSS data can be provided as input to an estimator (e.g., a Kalman filter) to calculate an estimated geographic location of a mobile device. In some implementations, DEM elevation data can be filtered before being provided to the Kalman filter for estimating the geographic location of the mobile device. The DEM elevation data can be filtered in response to detecting bridge and/or tunnel events that indicate that the DEM elevation data does not accurately represent the actual elevation of the mobile device.
A method comprising:
A non-transitory computer-readable medium including one or more sequences of instructions which, when executed by one or more processors, causes:
A system comprising:
Dependencies are inferred from the claim text.