Fixed site and satellite data-aided GPS signal acquisition method and system
US6121923A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Feb 19, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/1855
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fixed site and satellite data-aided system and method of GPS signal acquisition from a plurality of broadcasted GPS signals includes lengthening a pre-detection integration interval so that weak signals can be detected by operating coherently on captured signals. Coherency is ensured by relying on the predictability of the satellite signal's data pattern. The described method significantly reduces correlation resolution time based on applying information regarding code phase delays from each satellite in view to reduce code search space for other satellites being correlated. A position fix can be either computed locally or remotely at the fixed position reference site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.