Determining a location of a mobile device using a multi-modal kalman filter
US8768618B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2013 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Jul 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems for determining a location of a mobile device using a multi-modal Kalman filter are described. According to an example method, a mobile device may maintain multiple approximations of a location of a mobile device. Each approximation includes an estimated geographic location of the mobile device that is determined by filtering a respective subset of location estimates received by the mobile device using a respective Kalman filter, and one of the multiple approximations is designated as an active approximation. The method also involves receiving data indicating an estimate of a geographic location of the mobile device and, based on a distance between the estimate of the geographic location and a given approximation of the multiple approximations, updating the given approximation using the estimate of the geographic location. Additionally, the method involves providing for display a visual indication of an estimated geographic location associated with the active approximation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.