Accuracy investigation of 2-D near-field far-field transformation for RCS measurement using 2.5-D targets

摘要

Near-field far-field transformation (NFFFT) is one of the solution methods for reducing the long-range requirement of RCS measurement. We proposed a NFFFT technique that utilizes the two-dimensional (2-D) plane-wave expansion. Comparing to the other techniques, this has advantage of near-field (NF) measurement flexibility. However, the applicability to variously shaped targets has not necessarily been clarified. This paper investigates the accuracy of this technique numerically using complex structure.