抑制系数及其在评估雷达吸波材料对行波散射抑制作用中的应用

Suppressing Coefficient and Its Application in Evaluating Suppressing Effect of Radar Absorbing Material on Travelling Wave Scattering

本文提出一种评估雷达吸波材料对行波散射抑制程度的新参数──抑制系数．该参数能够评价出吸波材料对行波散射抑制效果的相对差异，而与目标的外形等因素无关．我们计算了几种国内外常用吸波材料的抑制系数－介电参数特性，抑制系数－涂覆厚度特性，以及多层介质覆盖时的抑制系数，得到一些有意义的结论．

new parameter-suppressing coefficient is proposed for evaluating pressing extent of radar absorbing materials on travelling wave scattering. The parameter can be used to evaluate relative difference of suppressing effect of absorbing materials on travelling wave scattering independent of the external shape of an object. Suppressing coefficients of radar absorbing materials as a function of permittivity, permeability and coating thickness, and suppressing coefficients of multilayer materials coating are calculated to present its application. Some interesting results are obtained.