System and method for providing assistance data within a location network
US7466264B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 4, 2004 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Aug 26, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for providing assistance to a position receiver in a location network consisting of a Global Navigation Satellite System (GNSS) and a synchronized network of positioning-unit devices is disclosed. A positioning-unit device observes the time and frequency of received Global Navigation Satellite System (GNSS) signals relative to the synchronized network of positioning-unit devices. These time and frequency observations are modulated, as assistance data, onto the positioning signals that are broadcast by the positioning-unit devices. A position receiver demodulates the assistance data and analyzes the positioning signals. The position receiver then searches for Global Navigation Satellite System (GNSS) signals in a range responsive to the assistance data and the analysis of the received positioning signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.