海上蒸发波导多径传输建模  

Oceanic Evaporation Duct Multipath Transmission Modeling

作　　者：陈超[1] 张业荣[1] 

机构地区：[1]南京邮电大学电子科学与工程学院,江苏南京210023

出　　处：《南京邮电大学学报（自然科学版）》2013年第2期65-71,共7页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

摘　　要：文中对电波在海上蒸发波导内的传输模型进行研究,在设定的波导模型下研究海面环境和蒸发波导对射线幅度衰减的影响。在不同海面情况进行仿真给出电波衰减模型。文中详细分析了海洋环境对波导内传输信号影响的程度。通过射线追踪技术研究蒸发波导的多径参数及其分布,给出到达角、到达高度分布的参考模型,得到传输100 km后信号的多径时延在10-9～10-7s之间。并据此建立蒸发波导多径传输模型。This paper focuses on the transmission model of radio waves in the evaporation duct. It investigates the ray amplitude attenuation influenced by the sea environment and the evaporation duct in the waveguide structure model set. It obtains a radio attenuation model by simulation in different sea conditions. In addition, the impact of the marine environment on signal in the waveguide is discussed. It uses the ray tracing technology to research multipath parameters and distributions in the evaporation waveguide. It also studies the distribution of arrival angles and reaching heights. The multipath time delay of signals 100 km far from the transmission point in the duct is between 10^-9 and 10^-7 seconds. Finally, it establishes the multipath transmission model in the evaporation waveguide.

关 键 词：蒸发波导 射线追踪 幅度特性 时延分布 多径建模 

分 类 号：TN011.3[电子电信—物理电子学]