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The dielectric material properties of the underlying tissue is of great importance in many biomedical applications, such as microwave breast cancer detection, to enable high resolution imaging of malignant tissue. In contrast to existing methods that are based on Time-of-Flight measurements to estimate the relative permittivity, we propose a sensing technique that measures a frequency shift in the...
In the microwave imaging of lossy dielectric objects, the back-scattered target signatures are often too weak. In comparison, the forward-scattered signals are much more sensitive to a target since it is likely to affect their attenuation. On the other hand, the ability of current imaging algorithms to achieve good range resolution depends critically on the availability of back-scattered signals....
In this letter, we propose a three-dimensional microwave holographic imaging approach for the cases where the object is in the far zone of the antenna but the measurements are performed in the near zone of the scattering object. Typical applications include concealed weapon detection, through-the-wall imaging, etc. In the proposed approach, the phaseless radiation pattern of the antenna, acquired...
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