Method for the accelerated acquisition of satellite signals
US7403155B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2006 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Dec 28, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/252
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention proposes to use optimally a location method based on a WIFI type short-range telecommunication system and a satellite location system. The short-range telecommunication system is used to locate the terminal accurately within the building in which it is situated. The method uses a cartographic representation of the buildings in order to deduce from the position of the terminal a set of satellites that could be received by the terminal. The satellites are then acquired to synchronize the terminal to the satellite system. That synchronization is then used when the terminal leaves the building to acquire as quickly as possible the set of satellites of the satellite navigation constellation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.