Method of digitally evaluating the frequency and the phase of signals, and a device for implementing such a method
US4979215A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1990 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | May 29, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R25/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of digitally evaluating the frequency and the phase of signals in the form of digitized samples, the method being wherein it comprises in succession: a stage during which numbers corresponding to the samples of the signals to be analyzed are processed in order to convert them into the form of an analytic signal whose real portion coincides with said signal to be analyzed; and, in parallel therewith: a stage of estimating the parameters to be analyzed which is performed in an overall manner on the basis of estimators and of selection criteria by working on the phase of the signal without using any operator of the Fourrier transform type of any hypothesis test either separately or simultaneously; and a stage of estimating the differences between the real signal as taken in this way and the signal obtained from the estimated parameters, thereby making it possible to deliver data in digital form relating to the quality of the analyzed signal and to the reliability of the estimated values. The invention is applicable, in particular, to microwaves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.