Title:
DIGITAL SIGNAL FILTERING METHOD, A FREQUENCY SYNTHESISER AND THE CORRESPONDING COMPUTER PROGRAMS
Document Type and Number:
WIPO Patent Application WO2003063350
Kind Code:
A3
Abstract:
The invention relates to a digital signal filtering method, a frequency synthesiser and the corresponding computer programs. More specifically, the invention relates to a method of filtering an original digital signal which is represented by a sequence of samples si, wherein i varies between 1 and N and N is the number of samples to be processed, said original digital signal comprising a dominant sinusoidal component which superimposes clutter signals. The inventive method can be used to reduce the level of clutter and to obtain a filtered digital signal having a good spectral quality. According to the invention, the method comprises a step involving digital filtering based on a simplification of a matrix SIGMA that appears in the singular value decomposition (SVD) of the Hankel matrix of the original digital signal.
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Inventors:
BOURDILLON ALAIN (FR)
Application Number:
PCT/FR2003/000180
Publication Date:
April 22, 2004
Filing Date:
January 20, 2003
Export Citation:
Assignee:
UNIV RENNES (FR)
BOURDILLON ALAIN (FR)
BOURDILLON ALAIN (FR)
International Classes:
H03H17/02; (IPC1-7): H03H17/02
Other References:
DIMONTE C L ET AL: "Tracking the frequencies of superimposed time-varying harmonics", ICASSP, vol. 5, April 1990 (1990-04-01), pages 2539 - 2542, XP010004173
S ET AL: "A QRS estimator using linear prediction approach", SIGNAL PROCESSING, AMSTERDAM, NL, vol. 72, no. 1, 4 January 1999 (1999-01-04), pages 15 - 22, XP004151089, ISSN: 0165-1684
S ET AL: "A QRS estimator using linear prediction approach", SIGNAL PROCESSING, AMSTERDAM, NL, vol. 72, no. 1, 4 January 1999 (1999-01-04), pages 15 - 22, XP004151089, ISSN: 0165-1684
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