Method of detecting a useful signal
US8102137B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 2009 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Jun 18, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting a useful signal from a measurement signal that is overlaid by at least one interference signal for use in a control or regulating device, where the interference signal occurs with at least one known interference signal frequency. The method including the steps of detecting the measurement signal, performing a Fourier transformation on the measurement signal with reference to the interference signal frequency to detect the interference signal amplitude and phase, detecting the interference signal on the basis of the interference signal amplitude and phase, and removing the interference signal from the measurement signal to detect the useful signal. The Fourier transformation is performed only with reference to the known interference signal frequency to simplify the computation making it possible to detect the useful signal in real time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.