ANALYSIS ON THE STEALTH CHARACTERISTIC OF TWO DIMENSIONAL CYLINDER PLASMA ENVELOPES

Stealth characteristic of two dimensional cylinder plasma envelopes is studied. Three cases about plasma refraction efiect, re∞ection characteristic and attenuation by absorbing electromagnetic wave (EMW) are concerned synthetically. As for plasma refraction stealth, EMW traces equation in cylinder plasma is deduced; a novel concept of plasma refraction deviation angle is presented; the relation between refraction deviation angle and incidence angle of EMW is yielded; the relation between refraction deviation angle and plasma density distribution is made out. As for re∞ection stealth and attenuation stealth, re∞ection calculation of multi-layer plasma is presented flrst, and plasma collision frequency as well as corresponding collision absorption is taken into account simultaneously, then EMW re∞ectivity with double-path attenuation is obtained. It is shown that cylinder plasma envelopes considering the three cases above could make distinct stealth.