Interference rejection through circle fitting

Details Interference rejection through circle fitting Interference rejection through circle fitting

2008-01-21

2010-10-26

Barbee, Manuel L (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Measured signal processing

C702S070000, C324S623000, C324S628000, C324S076120

Reexamination Certificate

active

07822579

ABSTRACT:
A method and apparatus for measuring electrical signals measures an electromagnetic wave having an interference component at a center frequency and at multiple times to obtain data points. The positions of the data points on a complex plane are calculated. Chords of a circle on the complex plane, wherein the chords passing between pairs of the data points, and the circle fit to the data points are calculated. The chords are used to determine an approximate center of the circle wherein the position of the approximate center of the circle on the complex plane represents the electromagnetic wave with the interference component removed. An indication of the measured electromagnetic wave having the interference component removed is output from the apparatus.

REFERENCES:
patent: 2003/0222654 (2003-12-01), Furse et al.

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