GPS receiver with improved immunity to burst transmissions
US6947840B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2003 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Oct 24, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/37
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
GPS signals are typically weak and thus easily interfered with by other radio transmissions in the same or adjacent frequency bands. Interference can be especially problematic when the GPS receiver is co-located with a communications device that includes a radio transmitter, such as a cellular telephone. The transmitted signal from the co-located communication device can overload (or saturate) the GPS receiver front-end designed to receive weak GPS signals. In such a situation no useful information can be extracted from the received GPS signals originating from the GPS satellites. Described herein is a novel apparatus and method that can be used to minimize the effect of co-located interference on a GPS receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.