对流层波导中电波传播的抛物方程法及误差分析  

Troposphere Radio Waves Propagation in Duct of Parabolic Equation Method and Error Analysis

作　　者：杨明珊[1] 邱志勇[1] 杜晓燕[2] 

机构地区：[1]郑州大学信息工程学院,河南郑州450001 [2]信息工程大学,河南郑州450001

出　　处：《郑州大学学报（工学版）》2015年第1期101-104,109,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：河南省科技厅资助项目(112300410055)

摘　　要：对窄角抛物方程推导过程中引入的主要误差进行分析,建立近似过程产生的误差与传播仰角、大气折射指数变化的关系,关系式明确了两因子引入误差的大小与方程适用范围.并验证在对流层大气折射指数变化与较小传播仰角情况下,窄角抛物方程求解的可靠性.最后,运用该算法分别计算标准大气、蒸发波导与表面波导中电磁波传播的损耗值.The main error which is introduced in the process of the Narrow-angle parabolic equation derivation is analyzed. Then,the relationship between the approximation error and propagation elevation and atmospheric refraction index changes is established. The established expression ascertains the value of the error brought by the two operators and verifies the reliability of the derivation of narrow-angle parabolic equation in the condition of small changes of propagation elevation and atmospheric refraction index. Finally,the loss values of electromagnetic wave propagation in standard atmosphere,evaporation duct and surface duct are calculated.

关 键 词：对流层波导 抛物方程算法 传播损耗 误差 

分 类 号：TN011[电子电信—物理电子学]