16 November 2000 Depth-resolving power in Fresnel and near zone
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The information content of radiated fields and the achievable resolution limits in the reconstruction of a bounded current distribution are dealt with. The analysis refers to the scalar and one dimensional case of a rectilinear and bounded electric current distribution when data are collected over a segment location in the Fresnel or near zone, orthogonal and centered with respect to the source. In the Fresnel zone, the investigation is carried out by means of the analytical Singular Value Decomposition (SVD) of the radiation operator providing the unknown-data mapping. This has been made possible thanks to the introduction of suitable weighted scalar products both in the unknown and data spaces. In the near zone, a numerical approach based on the SVD of the radiation operator has been followed. The effect of the geometrical parameters of the measurement configuration on depth resolving power is also discussed.
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Rocco Pierri, Rocco Pierri, Crescenzo Baratonia, Crescenzo Baratonia, Angelo Liseno, Angelo Liseno, Francesco Soldovieri, Francesco Soldovieri, Raffaele Solimene, Raffaele Solimene, } "Depth-resolving power in Fresnel and near zone", Proc. SPIE 4123, Image Reconstruction from Incomplete Data, (16 November 2000); doi: 10.1117/12.409270; https://doi.org/10.1117/12.409270

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