摘要
为了形象地模拟电磁波在大气波导环境下的传播路径,以及获得射线传播过程中的各项参数,介绍了两种常用的射线追踪模式:传统积分模式与泰勒级数近似模式,并根据两种模式的优缺点分别将它们应用于高、低仰角的射线传播,形成一种混合算法并给出了详细的程序流程。此算法在计算复杂波导环境下的射线轨迹方面具有实用性强、准确度高的特点。通过对典型波导剖面、实测大气剖面以及大气水平不均匀剖面的仿真结果分析,充分验证了此算法的有效性。
To simulate propagation path of radio wave in duct environment, and obtain parameters in course of the rays＇ propagation, a hybrid algorithm integrating the traditional integral model with Taler approximate model is proposed in this paper. The algorithm can be used to trace the path of rays ＇ propagation for both low elevation and high elevation. The simulation results for representative duct, measured and varing horizontal duct profile are analysed and the validity of the hybrid algorithm is proved.
出处
《电波科学学报》
EI
CSCD
北大核心
2008年第1期179-183,194,共6页
Chinese Journal of Radio Science
关键词
射线追踪
蒸发波导
悬空波导
修正折射率
ray tracing
evaporation duct
elevated duct
the modified refractivity
