paper 150113041655

Abstract

Analysis of the electromagnetic fields scattering from rotating structures such as aerogenerators, aircraft propellers, turbojet and turbofan, helicopter rotors, etc. has an increased interest due to the influence in civil and military radars efficiency and in radiation characteristics of on-board antennas. In this paper an Iterative Physical Optics method accelerated by a fast Far Field Approximation is presented. It has been developed in such a way that the computation time is reduced by means of a multilevel Far Field Approximation, a preprocessing of the parameters that are invariant with the rotations, a fast calculation of the rotation transformations of the parameters affected by the movement and a parallelization schema based on Fortran Coarrays.

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Guadalupe Gutierrez

F. J. Jimenez

Enrique Pascual Gil