复杂路径上空过渡区域低频电波传播损耗求解  

Solution to Low-frequency Radio Wave Propagation Problems in Transition Regions over Irregular Terrain

作　　者：周丽丽[1,2] 白学胜 穆中林[3] 蒲玉蓉[2] 席晓莉[2] 何立凤 

机构地区：[1]陕西科技大学电气与信息工程学院,西安710021 [2]西安理工大学自动化与信息工程学院,西安710048 [3]空军工程大学航空航天工程学院,西安710038

出　　处：《电子与信息学报》2017年第8期2019-2022,共4页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61401261);中国博士后科学基金(2016M600803);陕西科技大学科研启动基金(BJ11-20)~~

摘　　要：该文基于宽角抛物方程方法,对复杂路径上空过渡区域低频电波传播损耗问题进行研究。增加了高空接收场分量的方向因子公式推导及其约束条件;仿真了3种典型路径模型下,距地面上空60 km范围内的垂直电场分布,并比较分析了其与近地表面变化规律的异同。所提方法能够更好地将近地面与高空过渡区域场量求解方法统一起来,提高了计算精度,可为复杂地—电离层波导中低频天波传播问题解决提供技术支持。Based on the wide-angle parabolic equation method, propagation characteristics of low-frequency radio wave in transition regions over irregular terrain are analyzed. The formula of the direction factor is deduced with certain assumptions. Electric field distributions within 60 km height of three path models are simulated, and the propagation characteristics are compared with those on the ground. By the proposed approach calculation schemes of the electric field both on the ground and in transition regions can be unified with high accuracy, which is important for solutions of the sky-wave propagation problems in a complex earth-ionosphere waveguide.

关 键 词：低频电波 过渡区域 宽角抛物方程 方向因子 

分 类 号：TN011[电子电信—物理电子学]