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针对多层电离层,采用反抛物层作为连接层来描述电离层之间区域的电子密度分布.以电子密度和其相对于高度的一阶偏导数连续为依据,拟合出连接层的临界频率、半厚度和底高等电离层参数.将电离层的准抛物模型和连接层的反抛物模型中计算出来的等离子频率代入Appleton-Hartree公式和Snell定理,结合射线的几何结构完成多层电离层中的射线追踪,同时计算群路径、相路径和传输距离这3种重要的路径参数.分析当给定频率时,路径参数与入射角之间的关系,群路径、相路径与传输距离之间的关系,频率对路径参数之间变化关系的影响;同时分析了给定入射角时,路径参数与射线工作频率之间关系和入射角对于路径参数之间变化关系的影响.
For the multi-layer ionosphere, the anti-parabolic layer is used as the connecting layer to describe the electron density distribution in the region between the ionosphere. Based on the electron density and the first-order partial derivative of the height with respect to the height, the critical frequency , Half-thickness and base-height ionosphere parameters.According to the Appleton-Hartree formula and the Snell’s theorem, the ionospheric quasi-parabolic model and the inversely parabolic model of the connecting layer are substituted into the Appleton-Hartree formula and the ray geometry to complete the multi-layer ionosphere , And calculates three important path parameters of the group path, the phase path and the transmission distance at the same time.Considering the relationship between the path parameters and the incident angle when the given frequency is analyzed, the relationship between the group path, the phase path and the transmission distance The relationship between the path parameters and the working frequency of the radiation and the influence of the incident angle on the relationship between the path parameters are also analyzed.