An estimating method for periodic signal period under strong background noise

An estimating method for periodic signal period under strong background noise

  • CN 100,472,507 C
  • Filed: 11/24/2004
  • Issued: 03/25/2009
  • Est. Priority Date: 11/24/2004
  • Status: Active Grant
First Claim
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1. , a kind of periodic signal self sequence of utilizing under the strong background noise is carried out estimation approach to its cycle, it is characterized in that, comprises the steps:

  • the objective function of a kind of sequence measure function of (1) definition as search;

    (2) provide the initial period region of search [T Min, T Max] and the initial ranging mode;

    (3) constantly the signal period of conversion supposition searches for---and whenever give the signal period T of a supposition, the original signal sequence is carried out Time domain averaging, and average output sequence is calculated the measure function value by this cycle;

    (4) do the time domain average spectrum---the junction curve of the measure function value of corresponding each search cycle point;

    (5) according to the cycle of the accurate cycle estimator signal of the extreme value on the averaging spectrum, if successful then process finishes, otherwise the adjustment region of search or way of search are changeed step (3) and are continued.

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