Systems and methods for GNSS receivers
US11086023B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2018 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | May 3, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A global navigation satellite system (GNSS) receiver can include a code generator, a signal correlator circuit, and a processor. The code generator can generate samples of a plurality of ranging codes associated with corresponding GNSS transmitters. The signal correlator circuit can receive, according to a first clock rate, samples of a signal from a GNSS transmitter, and update, according to a second clock rate and a time division multiplexing scheme, cross-correlation values indicative of cross-correlations between the signal and a subset of the plurality of ranging codes. The second clock rate can be equal to at least multiple times the first clock rate. The signal correlator circuit can determine final results of the cross-correlation values based on the updating of the cross-correlation values, and a processor can identify the GNSS transmitter among the plurality of GNSS transmitters based on the final results of the cross correlation values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.