Method and apparatus for reducing tropospheric effects in GNSS positioning
US11047988B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 2017 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Jan 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/07
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of reducing tropospheric effects in GNSS positioning includes determining a tropospheric delay by: determining zenith delays for geographical areas along a path of GNSS signal travel between a GNSS satellite and the first location of the electronic device, the zenith delays determined using current weather information of the geographical areas, the geographical areas traversed by the path represented by cells of a grid, the cells comprising a selected size; determining path delays for the geographical areas by adjusting the zenith delays based on an angle of the GNSS satellite relative to the electronic device; and summing the path delays to determine the tropospheric delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.