Satellite signal multipath mitigation in GNSS devices
US8717233B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2011 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | May 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for mitigating the effects of multipath errors in GNSS devices is provided. Signals from GNSS satellites are received. Image data from an image sensor is received. Orientation data from an orientation sensor is received. The orientation data describes the orientation of the image sensor. Obstruction data is determined based on the image data. The obstruction data includes an obstruction region that indicates the sky in that region is obstructed by a structure. Based on the orientation data, obstruction data, and GNSS satellite location data, the position of GNSS satellites with respect to the obstruction region is determined. The location of the GNSS device is determined based on signals from some of the GNSS satellites and the position of GNSS satellites with respect to the obstruction region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.