摘要
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。
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. Conclusion The simulation results verify accuracy and validity of the proposed model. The model is a quick and easy calculating way suitable for different frequencies.
出处
《装备环境工程》
CAS
2016年第6期85-89,共5页
Equipment Environmental Engineering
基金
国家自然科学基金项目(61102018)
中国博士后基金项目(2014M562371)
陕西省自然科学基础研究项目(2014JM8312).
关键词
微波
沙尘
衰减
microwave
sand and dust
attenuation
