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Generalized inner product method and apparatus for improved detection and discrimination

  • US 20100245157A1
  • Filed: 08/25/2009
  • Published: 09/30/2010
  • Est. Priority Date: 03/30/2009
  • Status: Active Grant
First Claim
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1. Apparatus for detecting and discriminating fixed and slow moving objects in clutter, comprising:

  • a radar receive channel capable of receiving a radar pulse;

    a preprocessor forconverting said radar pulse to an intermediate frequency pulse;

    sampling said intermediate frequency pulse to yield a digital representation thereof;

    processing said digital representation so as to extract range-pulse data; and

    recording said digital representation over one coherent processing interval;

    a buffer memory for storing said recorded digital representation as a range-pulse data matrix;

    a weighted discrete Fourier transformer for converting said range-pulse data matrix to a range-Doppler data matrix;

    a pre-store memory for maintaining a database of target templates;

    a range-Doppler index calculator for calculating the range-Doppler indices for each said target template;

    a generalized inner product tester for composing and outputting an image formed from said range-Doppler indices and said range-Doppler data matrix; and

    a detector/discriminator for determining the existence of a target and its geometric parameters from said image.

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