Signal folding coherent acquisition for weak global positioning system (GPS) C/A coded signal
US6975690B1 · kind B1 · utility
3Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2001 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Nov 17, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70715
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A simplified, weak GPS C/A code coherent acquisition method. When performing GPS signal acquisition, the strength of a signal received at a GPS receiver having an outside antenna is generally sufficiently strong such that only 1 ms of data needs to be used in acquisition to find the signal. However, for weak signals received at a GPS receiver, when the antenna is inside a building or vehicle, for example, a long record of data is needed for acquisition. The present invention reduces the calculation burden for GPS signal acquisition for a weak signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.