Accounting for atmospheric and terrestrial obstacles in geographic positioning
US10852444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2017 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Oct 22, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position fix identifying a geographic location of a receiver is received. The position fix was generated using signals received at the receiver from respective high-altitude signal sources (such as satellites). Imagery of a geographic area that includes the geographic location is also received. The imagery is automatically processed to determine whether one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated. In response to determining that one or more of the high-altitude signal sources were occluded from the geographic location when the position fix was generated, the position fix is identified as being potentially erroneous.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.