Frequency rectification system: apparatus and method

摘要

A frequency rectification system (10) using a Van der Pol oscillator (40) for processing an asset signal by obtaining a complex signal (22) from an asset (16) comprised of a noise signal (28) and a signal of interest (24) having a corresponding frequency of interest (26) wherein the complex signal (22) includes a first spectrum having all of its largest spectral peaks corresponding to the noise signal (28) such that the signal of interest (24) at the frequency of interest (26) is hidden under the noise signal (28) and then processing the obtained signal (22) with the Van der Pol oscillator (40) with selected parameters for rectifying the complex signal (22) into a rectified signal (42) such that the noise signal (44) is abated and the rectified signal (22) is comprised of a second spectrum having a largest spectral peak corresponding to the signal of interest (24) with all other spectral peaks smaller, and then extracting the frequency of interest (26) from the rectified signal (42) with an extraction module (60) for use in providing asset information.