
The Far Field Approximation (FAA) is an approximate decomposition phase algorithm that is developed based on the distinction between near-field and far-field interactions in the spatial domain. The algorithm is found to have a computational complexity of O(N/sup 1.5/) if the interactive solver method is used. For discussing the accuracy of FFA, a typical example, the bistatic RCS of TE-excited conducting circular and rectangular cylinders are calculated numerically in this paper.
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