H. Kritikos

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The one-dimensional inverse scattering problem can be solved in principal by use of the Gel'fand-Levitan integral equation. However, explicit solutions of this equation are seldom easy to obtain. Here we develop an iterative numeric procedure to reconstruct arbitrary smooth dielectric profiles. Several cases exemplify the simplicity and economy of the(More)
  • H. Kritikos
  • IEEE Antennas and Propagation Society…
  • 1996
Signals which are generated from radar echoes contain features which display time-like or frequency-like character. The time-like behavior is generated by strong specular returns while the frequency-like is caused by resonances. In order to study these phenomena it is often necessary to go beyond the normal frequency transform and pole extraction techniques(More)
The mutual coherence function is derived for the scattered field due to a plane wave incident on the surface of the sea. The analysis is based on first order small perturbation theory, and neglects composite surface effects. The concept of an interferometer measuring the space correlation function of the scattered field providing information leading to the(More)
Temperature profiles are calculated in tissue models exposed to microwave radiation, by solving the heat transport equation taking into account thermal conduction, thermal convection due to blood flow, and surface cooling of the tissue. We consider two idealized models representing limiting cases of the microwave heating behavior of actual tissue sections.(More)
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