短波射线追踪技术中的电离层混合建模方法  

Ionosphere hybrid modeling method for short-wave ray tracing

作　　者：栗伟珉[1] 苏东林[1] 阎照文[1] 刘焱[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《北京航空航天大学学报》2012年第4期473-477,共5页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金资助项目(60831001);国防基金资助项目(9140A31010109HK0101);创新群体基金资助项目(60921001)

摘　　要：在国际参考电离层模型和多层准抛物模型的基础上,提出了一种混合应用两种模型进行电离层建模的新方法.利用射线追踪技术,分别对混合模型和传统国际参考电离层模型下短波射线在电离层中的轨迹进行了仿真,得到了电波群路径.通过与实测电波群路径的对比,结果表明:对中国中纬度地区在电离层混合模型下的射线追踪精度优于传统国际参考电离层模型下的射线追踪精度,同时混合建模方法降低了多层准抛物模型对输入条件的要求,扩展了多层准抛物模型在射线追踪技术中的应用范围.Based on the international reference ionosphere（IRI） and the quasi-parabolic segments（QPS） model,a new ionosphere hybrid modeling method for short-wave ray tracing was proposed.The group ranges which show the short-wave propagation trace in the ionosphere were obtained separately by simulation in the hybrid model and the IRI model.By comparing the simulated results and the ionospheric oblique incidence sounding experimental data,the hybrid modeling method accuracy at mid-latitude region in China was analyzed.It indicates the ray tracing simulation accuracy in the hybrid model on experimental day better than the one in the IRI model.The limit to the QPS model＇s input is reduced by the hybrid modeling method and the QPS model＇s application range is extended in ray tracing technology.

关 键 词：电离层 混合建模 射线追踪 群路径 

分 类 号：TN011.2[电子电信—物理电子学]