Avoiding interference to a GPS receiver from wireless transmissions by time multiplexing GPS reception
US6825802B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 18, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Nov 18, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/709709
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The jammer response circuitry of the present invention operates to control correlation circuitry in a GPS receiver based on an occurrence of a transmission from a wireless transmitter, thereby avoiding performance degradation in th GPS receiver due to interference caused by the transmission. In general, the jammer response circuitry activates a control signal during the transmission, thereby temporarily stopping the operation of the correlation circuitry. More particularly, the accumulation of results of a correlation of a received signal with a generated frequency and a generated code having numerous time offsets is temporarily stopped when the control signal is activated and resumes operation when the control signal is deactivated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.