The mechanism of Doppler frequency shifts resulted from variations and movement of ionosphere is analysed, and a general model for the ionosphere involving several factors is assumed.
本文分析了电离层的变化和运动引起多普勒频移的物理机制，假定了一个包含多种因素的电离层模型。
Based on the ITS channel model this paper theoretically discusses the fading effect of the ionosphere to the signal which is reflected by the ionosphere.
在宽带信道模型的基础之上，从理论上分析了电波信号通过电离层信道所经受的衰落影响。
Furthermore, the background ionosphere model is very important factor in the filed of ionosphere reconstruction.
也表明了背景电离层模型在电离层重构中的重要作用。
The International Ionosphere Reference (IRI) model, as an empirical one, can reach 60 percent of the correcting effect.
国际电离层参考模型IRI的改正精度一般可以达到60％的效果；
Based on the electron density profiles which were inverted from digital ionograms, a Chapman function is used to give a fitted model of ionosphere.
在数字频高图换算电子浓度剖面的基础上，利用卡普曼函数拟合法建立模型电离层。
The results mentioned above are important for studying the characteristics of low latitude ionosphere and are significant to develop an ionospheric prediction model.
上述新结果对于认识低纬电离层特性具有重要的科学意义，对于电离层预报模型的建立也有重要的应用价值。
The main effect on the GPS signals of ionosphere and ionospheric refractive model are researched in this paper; then the dual-frequency corrected model of ionospheric refractive error is concluded.
研究了电离层对GPS观测信号的主要影响及电离层折射误差模型，总结了电离层双频改正模型。
Model calculations are used to analyse fhe function of the magnetosphere-ionosphere electrodynamic coupling and that of the ionospheric tide-dynamo.
对磁层-电离层电动耦合和电离层发电机两种效应进行了模式计算，并对所得的一些耦合现象作了综合讨论。
The TEC value of the ionosphere at any time can be calculated while the model has been modified appropriately.
该模型经适当修正，即可求出任意时刻电离层总电子含量。
The TEC value of the ionosphere at any time can be calculated while the model has been modified appropriately.
该模型经适当修正，即可求出任意时刻电离层总电子含量。
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