Fast analysis of scattering by arbitrarily shaped three-dimensional objects using the precorrected-FFT method

Abstract

This Letter presents a fast solution to the electric-field integral equation (EFIE) for large, three-dimensional, arbitrarily shaped objects. The EFIE is discretized by the method of moments and the precorrected-FFT method is then used to accelerate the matrix-vector multiplications in iterations. The resulting algorithm leads to a great reduction in memory requirement and execution time and can be modified to fit a wide variety of systems with different Green's functions without excessive effort.