ELECTROMAGNETIC SIMILITUDE AND INCONSISTENCY OF LASER SCATTERING FOR SCALE-MODEL

In this paper the electromagnetic similitudes for lossy and dispersive system are discussed. If both the geometric size of an object and inc ident wavelength are scaling-down simultaneously by analogy with micro wave band, the inconsistencies exist for laser scattering in visible a nd near infrared bands. Another method of measurements and simulation for laser scattering in the geometric model is analyzed. That is, the geometric size of the object is only scaled down but the incident wave length, material and configuration are keeping to not change. Although this way does not satisfy the principles of the electrodynamic simili tude, it can overcome the electromagnetic inconsistencies for laser sc attering. It is possible that the LRCS of the full-scale tested object are evaluated by those of the corresponding scaling-down model at ide ntical frequency to establish theoretical models and data basis for LR CS of objects.