Global positioning system receiver for monitoring the satellite transmissions and for reducing the effects of multipath error
US6347113B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1999 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Nov 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/709
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A Global Positioning System receiver includes an intermediate frequency (IF) processor configured to downconvert broadcast signal to generate a first channel signal which is further downconverted to recover a PRN signal by an angle rotator. The receiver further includes a signal generator configured to generate N gated PRN signals. The N gated PRN signals are generated based on a local replica PRN signal time-divided by M intervals within a chip period of the local replica PRN signal. N and M are positive integers. A number of correlators is also provided. Each of which the correlators are configured to multiply a respective one of N gated PRN signals with the PRN signal to generate a number of correlation values. The correlation values are utilized to monitor distortions in the broadcast signal and/or to track the PRN signal with the local replica PRN signal. Further, methods of monitoring and/or tracking the PRN signal with the local replica PRN signal by utilizing the correlation values are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.