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Application of plane-polar NF scattering measurements to the RCS evaluation of a sphere

This work represents a preliminary study on the application of the nonredundant near-field (NF) sampling techniques to the reconstruction of complex target radar cross section. A near-field plane-polar arrangement of scattered field samples is simulated and adopted here to recover, via plane-rectangular near-field-far-field transformation, the field scattered in the far-zone by a perfectly conducting sphere. This allows one to lower in a significant way the number of needed near-field data with respect to the classical plane-rectangular scanning, without losing the numerical efficiency. Numerical simulations are reported to confirm the effectiveness of the proposed approach.