A numerical technique for the determination of scattering cross sections of infinite cylinders of arbitrary geometrical cross section

A method has been developed for calculating the scattering from an infinitely long cylinder of arbitrary (but smooth) cross section. The equations have been programmed for a computer and monostatic and bistatic cross sections calculated for circular and elliptic cylinders. A number of checks and limiting cases are applied to the results in order to establish the limits within which the assumed expansion gives acceptable numerical results. For the case of monostatic scattering from circular cylinders a numerical check is possible and the result was in agreement with Mie series calculations to six significant figures.