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Interference suppression for measuring signals with periodic wanted signals

  • US 6,654,623 B1
  • Filed: 05/29/2002
  • Issued: 11/25/2003
  • Est. Priority Date: 06/10/1999
  • Status: Expired due to Term
First Claim
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1. A method of suppressing interferences in a physical measurement signal with a substantially periodic useful signal, comprising the steps of:

  • (a) transforming, preferably by means of a wavelet transform, the measurement signal into a summation of aperiodic basic functions, each member of the sum comprising a coefficient;

    (b) characterizing those coefficients which exceed a given threshold value as interference coefficients which have presumably been influenced by interference;

    (c) manipulating the interference coefficients for suppressing the interferences; and

    (d) transforming the summation manipulated in step (c) back into a measurement signal with interference suppression.

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