摘要
传输损耗衰落斜率特性的研究对于对流层微波超视距传播系统的抗衰落设计和评估有重要的意义.根据在我国黄渤海区域进行的一次14.1 GHz微波超视距传播试验,结合散射抛物方程,高级折射效应预报系统(Advanced Refractive Effects Predicition System,AREPS)以及当地的气象数据分析了其衰落损耗数据的可用性;重点研究了其衰落斜率特性,根据其衰落斜率特性分析了电磁波通过波导、超折射、对流层散射三种环境及其共同作用进行超视距传播时信号的稳定性.
Study on the fade slope characteristics of the transmission loss has important significance for the design and the evaluation of the microwave over-the-horizon systems which Fade Mitigation Techniques may be implemented. Transmission loss measurements at 14.1 GHz have recently been made on the oversea paths in the areas of the Yellow sea and the Bohai sea of China. The availability of the data is analyzed combining with the troposcatter parabolic equation method, the Advance Refractive Effects Prediction System (AREPS) and the local meteorological data. Then, this paper focuses on the study of the fade slope characteristics of the transmission loss. The stability of the trans-horizon microwave signal, which propagated on oversea with the duct, the super-refractive, the troposcatter and the hybrid mechanism, has also been analyzed with the fade slope characteristics of transmission loss. Copyright © 2015 by Editorial Department of Chinese Journal of Radio Science
出处
《电波科学学报》
EI
CSCD
北大核心
2015年第6期1164-1169,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金(编号:61471329
61401410)
