Heading constraints in a particle filter
US9759561B2 · kind B2 · utility
7Cited by
19References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2015 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | May 15, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for computing a correction to a compass heading for a portable device worn or carried by a user is described. The method involves determining a heading for the device based on a compass reading, collecting data from one or more sensors, determining if the device is indoors or outdoors based on the collected data, and correcting the heading based on the determination of whether the device is indoors or outdoors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.