中文摘要：

沙粒带电是以表面部分区域带电的方式存在，应用沙粒的等效介电常数模型，对沙尘暴引起毫米波的衰减和相移进行了分析和仿真计算。结果表明，频率小于35GHz时，沙尘对电磁波的衰减影响较小；当水含量增大时，衰减会随之显著增加。沙粒带电量越大，沙尘引起的相移频率随之而增大。

英文摘要：

According to having part electric charge of sand particles, the millimeter wave attenuation and phase shift induced by sand and dust storm of different water contents were analyzed and simulated by equivalent permittivity method. It was shown that the attenuation evidently increases with water content in sand particles increasing; generally, the change of attenuation is small for the electromagnetic wave frequency below 35 GHz; but the change of the influence is obvious with the change of water content; when the electric charge of sand particles increases, the phase shift increases with electromagnetic wave frequency.