Interference wave signal removing device, GNSS reception apparatus, mobile terminal, interference wave signal removing program and interference wave removing method
US9291715B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2011 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Jul 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/7101
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An interference wave signal removing device that can surely remove an interference wave signal is provided. An interference wave signal remover includes a controller, a notch filter, an entire-range frequency scanner, and a local frequency scanner. The controller detects the interference wave signal based on a frequency scanning result by the entire-range frequency scanner, and sets the notch filter to attenuate the interference wave signal frequency. Based on input signals to the notch filter, the local frequency scanner frequency-scans in a local frequency band including an attenuation band of the notch filter. The controller detects a frequency drift of the interference wave signal frequency based on the frequency scanning result by the local frequency scanner, and updates the setting of the notch filter to attenuate the interference wave signal frequency after the frequency drift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.