快速算法实现电离层短波射线追踪

在不考虑地磁场和碰撞的条件下,利用基于费尔马原理的射线微分方程,采用直线几何近似和变步长技术相结合的快速算法实现了电离层短波射线追踪,达到了保证精度的同时提高运算效率的目的。引入亚大模型和附加扰动影响的准抛物模型描述电离层电子浓度剖面,验证快速算法的准确性和高效性。仿真结果表明,快速算法能够适应各种复杂的电离层电子浓度剖面,在保证精度的同时更迅速地计算射线的传播轨迹。

High-speed Algorithm for Realization of Short-wave Ray Tracing in Ionosphere

Under the condition that the geomagnetism and collision are neglected,and in accordance with the trajectory equation based on Fermat principle,the short-wave ray tracing in the ionosphere is realized by high-speed algorithm in combination of line geometry approximation with step-changing technique.Asian-Oceanian model and quasi-parabola model with added disturbance effect is introduced to describe electron density profile,and verify the veracity and efficiency of the high-speed algorithm.The simulation results indicate that the high-speed algorithm is suitable for all sorts of complicated electron density profile and could more quickly and precisely calculate the propagation tracks of the rays.