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Methods and systems for near-field microwave imaging

  • US 10,353,067 B2
  • Filed: 09/12/2016
  • Issued: 07/16/2019
  • Est. Priority Date: 12/17/2015
  • Status: Active Grant
First Claim
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1. A method of near-field microwave imaging of a scene, the method comprising:

  • acquiring multistatic array data with a multistatic array;

    applying a multistatic-to-monostatic correction to the multistatic array data to form corrected multistatic array data;

    Fourier transforming the corrected multistatic array data to form Fourier-domain data;

    applying a phase shift to the Fourier-domain data to form phase-shifted Fourier-domain data, the phase shift corresponding to a distance between the multistatic array and the scene; and

    inverse Fourier transforming the phase-shifted Fourier-domain data to form a representation of the scene,wherein applying the multistatic-to-monostatic correction comprises;

    estimating multistatic reflections of a point scatterer as sampled by the multistatic array;

    estimating monostatic reflections of the point scatterer as sampled in a plane of the multistatic array; and

    weighting the multistatic array data by a ratio of the monostatic reflections of the point scatterer to the multistatic reflections of the point scatterer.

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