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中文摘要：
目前对蒸发波导的大量研究集中于信道的路径损耗以及对波导高度的预测上，而对蒸发波导内的多径时延特征研究很少。通过射线追踪模型仿真研究了蒸发波导的多径时延量级和天线高度问题，并有所发现。海上实验证明了仿真的正确性，结果表明：由于蒸发波导结构的特殊性，其信道的多径时延量级很小，较适于海上微波远距离高速率通信。
英文摘要：
At present,most studies on evaporation duct focus on the propagation loss and the prediction of the evaporation duct height （EDH）,while little effort has been devoted to the multi-path effect of evaporation duct. The purpose of this paper is to study the multi-path delay of the evaporation duct by simulation based on the ray trace model. The simulation results are verified by experiments over the sea. For its small multi-path delay, the e- vaporation duct can be used for the microwave communication system over the sea surface.
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