Use of a sky polarization sensor for absolute orientation determination in position determining systems
US9562764B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2013 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Jul 25, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06G7/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining absolute orientation of a platform is disclosed. In one embodiment, a first sky polarization data set for a first time Ti is measured using a sky polarization sensor disposed on a platform. A second sky polarization data set is obtained at a second time Tj. A difference in orientation between the first sky polarization data set and the second sky polarization data set is determined using an orientation determiner. The difference in orientation is provided as at least one orientation parameter for the platform at time Tj. The at least one orientation parameter is used to provide a direction relative to a reference point on the platform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.