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Method for real time matched field processing

  • US 20080181056A1
  • Filed: 01/30/2007
  • Published: 07/31/2008
  • Est. Priority Date: 01/30/2007
  • Status: Active Grant
First Claim
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1. A method for real time matched field processing, said method comprising the steps of:

  • measuring acoustic data from at least one sensor of a sonar array of sensors;

    providing a first data input from said measuring step;

    translating the first data input to a frequency domain with a Fourier transform to a set of continuous time samples from said at least one sensor;

    defining a data vector from the frequency domain;

    determining at least one replica vector representing a predicted value of the at least one sensor output for a specific frequency;

    averaging multiple replica data sets of the at least one replica vector to the first data input;

    determining a closest matched data set to the first data input from said averaging step; and

    outputting an ambiguity surface as a set of numbers in a range between zero and one with a highest value corresponding to a position of an acoustic source.

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