Scattering by cylinders in translational motion

Abstract
The Fourier spectrum of the signal scattered by cylinders in translational motion is evaluated. The incident wave is a plane wave. Both perfectly conducting and dielectric cylinders are considered. Particular attention is given to the low-frequency limit. The spectrum turns out to be continuous, and evidences two (infinite) peaks, at frequencies ωi(1 — β cos θ i)(1 ± β)-1.