Frequency rectification system: apparatus and method
US7065474B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2004 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | May 14, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/07
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Frequency rectification system using a Van der Pol oscillator for processing an asset signal by obtaining a complex signal from an asset comprised of a noise signal and a signal of interest having a corresponding frequency of interest wherein the complex signal includes a first spectrum having all of its largest spectral peaks corresponding to the noise signal such that the signal of interest is hidden under the noise signal. The system processes the complex signal with the Van der Pol oscillator with selected parameters for rectifying the complex signal into a rectified signal such that the noise signal is abated and the rectified signal is comprised of a second spectrum having a largest spectral peak corresponding to the signal of interest with all other spectral peaks smaller. The system extracts the frequency of interest from the rectified signal with an extraction module for use in providing asset information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.