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Comparison of UWB Radar Backscattering by the Human Torso and a Phantom

An Ultra Wide Band (UWB) radar is used to measure the backscattering of a human and a human phantom. The choice of material and shape for the human phantom is discussed. The dielectric properties of the material (wet sand) used in the experiment are measured by a retromodeling technique and also calculated by mixture formulas. The appropriate frequency choice for the application is discussed.