Method of factorizing pseudodistance time of week in an assisted GNSS context
US7312748B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2005 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Aug 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/252
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is disclosed of calculating the position of a mobile device in which an assistance data server provides aid with solving the point of the mobile device and the mobile device communicates with the server via a cellular network and receives positioning signals from a satellite positioning system using a spread spectrum access technique. The method comprises the following steps: following reception of the positioning signals, the device sends the server a set of spreading code phases corresponding to the satellites acquired, the code phases having a single time of week indication corresponding to the transmission time of one of the code phases; the server deduces from the information the transmission times corresponding to the code phases and the pseudodistances; and the server solves the point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.