TY - JOUR A2 - Selvan, Krishnasamy AU - D'Agostino, Francesco AU - Ferrara, Flaminio AU - Gennarelli, Claudio AU - Guerriero, Rocco AU - Migliozzi, Massimo PY - 2010 DA - 2010/09/26 TI - Near-Field/Far-Field Transformation with Helicoidal Scanning from Irregularly Spaced Data SP - 859396 VL - 2010 AB - A fast and accurate technique for the compensation of the probe positioning errors in the near-field/far-field transformation with helicoidal scanning is proposed in this paper. It relies on a nonredundant sampling representation using a spherical modelling of the antenna under test and employs an iterative scheme to evaluate the near-field data at the points fixed by the helicoidal nonredundant representation from the acquired irregularly distributed ones. Once these helicoidal data have been recovered, those required by a classical cylindrical near-field/far-field transformation are efficiently determined by using an optimal sampling interpolation algorithm. Some numerical tests assessing the effectiveness of the proposed approach and its stability with respect to random errors affecting the near-field data are shown. SN - 1687-5869 UR - https://doi.org/10.1155/2010/859396 DO - 10.1155/2010/859396 JF - International Journal of Antennas and Propagation PB - Hindawi Publishing Corporation KW - ER -