Scattering by a moving object: Computations and measurements

The authors consider the relativistic scattering of a monochromatic electromagnetic wave by an electrically perfectly conducting object that moves with uniform velocity v in the x-direction of a stationary reference frame. A co-moving reference frame in which the object is at rest is also defined. The two reference frames are mutually related by the Lorentz transformation. A plane-wave representation of the incident field is used. These plane waves are transformed to the co-moving reference frame; they remain plane waves. The scattering problem in this co-moving reference frame is solved using the physical-optics approximation. The scattered field is written as a plane-wave representation. These plane waves are transformed back to the stationary reference plane; they remain plane waves. For low velocities of the object, numerical results pertaining to the electric field quantity are compared with experimental results.<>