Reducing and sharing computations for GPS signal processing
US8098765B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2005 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Jan 6, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/37
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems for processing a Global Positioning System (GPS) signal are provided. A method includes: transforming a time domain GPS signal to a frequency domain GPS signal; storing a frequency domain pseudorandom noise (PRN) signal; correlating the frequency domain GPS signal with the PRN signal at a plurality of frequencies, said correlating including: shifting the frequency domain GPS signal by an amount corresponding to one of the plurality of frequencies; downsampling the shifted frequency domain GPS signal; and multiplying the shifted frequency domain GPS signal by the stored frequency domain PRN signal to produce a correlated signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.