沙尘媒质微波衰减特性研究

摘要

Objective To research characteristics of microwave attenuation in sand and dust medium.Methods A model on microwave attenuation and phase shift of sand and dust medium along horizontal and earth-space paths was given according to the electromagnetic wave propagation theory in random media. The model was compared with results according to attenuation models proposed by Sharief, Erdenekhuu and Wenyan.Results The attenuation model was consistent with the Goldhirsh model and the validity of proposed model was verified. The result predicted by the model agreed with that of the Sharif's model.Con-clusion The simulation results verify accuracy and validity of the proposed model. The model is a quick and easy calculating way suitable for different frequencies.%目的 研究沙尘媒质中微波衰减特性.方法 根据随机媒质电磁波传播理论,给出了沙尘媒质中沿水平路径和沿地空路径的微波衰减和相移模型,与Sharief,Erdenekhuu和尹文言衰减模型计算结果 进行比较和分析.结果 衰减模型与Goldhirsh模型比较吻合,验证了其正确性.模型预测结果 与Sharief模型结果 一致.结论 仿真结果 验证了提出模型的有效性,模型计算方便,适用于不同频率.