Error mitigation in doppler based satellite positioning system measurements
US10871576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2018 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Jan 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/49
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed embodiments facilitate accuracy and decrease error in terrestrial positioning systems, including errors induced by multipath (e.g. ground reflections) in doppler based measurements of SVs. In some embodiments, one or more Global Navigation Satellite System (GNSS) doppler measurements and one or more corresponding GNSS pseudorange measurements for one or more satellites may be obtained. One or more GNSS doppler estimates corresponding to the one or more GNSS doppler measurements may be determined, wherein for a GNSS doppler measurement, the corresponding GNSS doppler estimate may be determined based, in part, on the GNSS doppler measurement and a GNSS pseudorange measurement corresponding to the GNSS doppler measurement. A speed of the UE may be determined based, in part, on the one or more GNSS doppler estimates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.