Ionized layer vertical electron density measurement method

Abstract

The invention discloses an ionosphere vertical electron density measurement method. In the first time period T, meteoric trail communication equipment outputs n Tp (t). Querying the value of the VP (t) according to the value of each Tp (t) in the Tp (t) and VP (t) corresponding table; the duration time Tp (t) of the meteoric trail signal intensity P and the vertical electron density of the ionized layer outside the meteoric trail area are measured, namely, the vertical electron density V (t) of the meteoric trail background ionized layer is measured; obtaining the mean value V of the vertical electron density V (t) of the background ionized layer of the meteoric trail area in the time period T; obtaining dv (t) and f (TP (t)); f (TP (t)) is the vertical electron density V of the background ionized layer of the region in the time period as the mean value of V (t) in the time period T. According to the ionosphere monitoring based on the GNSS signal, the inversion algorithm is adopted to calculate the electron density of each layer of the ionosphere, the obtained meteoric trail background ionosphere vertical electron density V is more accurate, and the disclosure of the activity rule of the ionosphere in the region is more real and powerful. The method can be widely applied to the fields of satellite navigation precision improvement, satellite communication performance improvement and short-wave communication rapid frequency selection.

Description

technical field [0001] The invention belongs to the field of communication, and in particular relates to a method for predicting ionospheric vertical electron density. Background technique [0002] When the meteor meets the earth, the meteor breaks into the earth's atmosphere and moves at a speed of 12-72 km / s relative to the earth. The high-speed moving meteor rubs violently with the air in the atmosphere. As the meteor penetrates into the dense area of ​​the atmosphere (120-80 kilometers above sea level), the friction becomes more intense, iron, calcium and other substances begin to melt and evaporate, and the atoms of the substance get greatly The speed of the thermal movement of the meteor causes the ionization of the surrounding atmosphere to be excited. With the movement of the meteor, a cylindrical column of ionized gas is formed at the tail of the meteor, which is called the "meteor trail". After the meteor trail is formed, the initial radius is only a few centimete...

AI Technical Summary

Problems solved by technology

This technology cannot accurately detect the ionosphere in layers, and introduces the limitations of the ionospheric tomographic model of the thin-layer assumption, and cannot overcome the limitations of the empirical model and traditional ground detection methods. Currently, it is only suitable for monitoring nearly one thousand kilometers. The vertical distribution of ionospheric electron density and its disturbance state on a large-scale scale, while the electron density of a small-scale ionosphere of tens of kilometers cannot be directly, real-time and accurately measured

Images