Abstract
Radar cross section (RCS) is one of important EM properties of radar targets. Its measurement requires long distance to obtain far-field characteristics in higher frequency range such as X-band. Planar scanning near-field measurement combined with near-field far-field (NF-FF) transformation is realized by simple measurement system. However, scan area truncation of planar scanning often cause intolerable error for predicted RCS. In this paper, the accuracy of NF-FF transformation technique based on fast multipole method (FMM) with scan area of planar scanning is investigated.
