此现象不仅与宁静时完全相反，而且与中低纬电离层形态变化也有很大差别。
The morphology is not only entirely changed from the quiet period, but also much different in comparison with that at middle and low latitudes.
本文通过对电离层形态结构的分析以及建立适当的模型来讨论电离层折射对干涉仪输出的影响，并提出了改正方案。
The influence of ionospheric refraction on the output of interferometer is discussed and the method used to correct it is suggested.
另一方面，电离层对流形态和晨昏对流圈的经向跨度及其两端的位置是基本不变的。
At the same time, the longitudinal range and the positions of the two boundaries of the ionospheric convection pattern remain basically unchanged.
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