Method and apparatus for eliminating background interference signals from multichannel signal measurements
US6538436B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1999 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Aug 24, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/1269
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus is described for making multichannel signal measurements of weak signals in noisy environments, wherein the elimination of background interference signals from the multichannel signal measurement is performed. The method is based on an adaptive compensation technique in which the large interfering background signals are first recorded. By a statistical analysis of this multichannel measurement, independent components of the interference are determined. The apparatus is provided with compensator elements which are coupled to individual sensors for both collection and distribution of information on the interference signals during the measurement. In this way the output of a device can be made immune to the large amplitude interference components present in the device's environment. This reduces the dynamic range requirement for the data transport and storage systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.