Global positioning receiver with system and method for parallel synchronization for reducing time to first navigation fix
US7671792B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2004 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Mar 30, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A global positioning system receiver with a system and method for parallel synchronization. The novel receiver includes a correlator having plural demodulator channels for receiving a signal from a first satellite, and a processor for processing the signal from the first satellite using a plurality of the channels. The processor includes a parallel synchronization process for synchronizing the receiver with the signal. In an illustrative embodiment, the processor is adapted to instruct the plurality of channels to track the signal from the first satellite in parallel, each channel using a different timing hypothesis. Only the channel determined to have the correct timing is retained for tracking the satellite. For the first satellite only, the processor also demodulates the hand-over word and determines a GPS transmit time. The parallel synchronization process is then repeated for subsequent satellites in turn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.