Indoor map data as a recalibration source for low-cost MEMS inertial navigation

摘要

A computer-implemented method for determining an estimated user location performed on a computer system programmed to perform the method includes determining in physical sensors, movements in response to movement of the computer system, determining in a processor a physical context, in response to the movements, determining in the processor whether the physical context is substantially similar to a map-based context associated with a location on the map, when a map-based context is substantially similar to the physical context, the method includes determining in the processor the location on the map associated with the map-based context, determining in the processor a graphical user interface in response to the location on the map, and displaying the graphical user interface on a display of the computer system.

主权项

1. A computer-implemented method for determining an estimated user location performed on a computer system programmed to perform the method, comprising:
determining in a plurality of physical sensors in the computer system, a plurality of physical perturbations in response to a change in physical orientation of the computer system by a user, wherein the plurality of physical sensors includes two or more sensors selected from the group consisting of an accelerometer, a magnetometer, a magnetometer, and a gyroscope; determining in a processor in the computer system, a physical context of the computer system, in response to the plurality of physical perturbations, the physical context describing a user movement associated with the plurality of physical perturbations; determining in the processor in the computer system, whether the physical context is substantially similar to one of a plurality of map-based contexts associated with a map, wherein each map-based context is associated with a location on the map; and when the physical context is substantially similar to one of the plurality of map-based contexts, the method comprises:
determining in the processor a location on the map associated with the one of the plurality of map-based context;determining in the processor a graphical user interface in response to the location on the map; anddisplaying on a display of the computer system, the graphical user interface to the user.