A Method for Analyzing the Long-term Change of the Total Electron Content in the Ionosphere

Abstract

The invention relates to a method for analyzing the long-term change of the total electron content of the ionosphere. First, the influence of solar activity, geomagnetic activity and neutral atmospheric components is considered, and on this basis, a model of the total electron content of the ionosphere changes with time is established, and then the global observation is used to The long-term observation results of the ionospheric total electron content obtained by the system establish a system of equations and calculate the model coefficients; further use the long-term observations of the ionospheric total electron content to calculate the correlation between the model value and the observed value, and use it as an evaluation of the model accuracy standard. The model correlation analysis is carried out on the long-term observations of the multi-source ionospheric total electron content, and the weight of each influencing factor on the long-term change of the ionospheric total electron content is judged. The above analysis is carried out on different regions of the world, and the differences in the total electron content of the ionosphere over time in each region are judged. This method can effectively analyze the long-term changes in the total electron content of the global ionosphere.

Description

technical field

[0001] The invention belongs to the field of ionosphere, and in particular relates to a method for analyzing the long-term change of the total electron content of the ionosphere. Background technique

[0002] The ionosphere is the upper atmosphere located 60km to 1000km above the earth, and it is an important space strategic resource. The ionosphere is filled with a large number of charged particles and free electrons, which have a certain impact on the radio waves penetrating the earth's atmosphere, and are one of the important sources of ranging errors for satellite navigation signals in the atmosphere. The total electron content of the ionosphere is an important physical quantity reflecting the activity and state of the ionosphere. It is affected by solar activity and the space magnetic field, and will be strongly disturbed during solar storms and geomagnetic storms. The total electron content of the ionosphere can be obtained by inversion of dual-frequen...

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