Backscatter-and-oblique-ionograms-based joint inversion method for ionospheric parameters

Abstract

The invention discloses a backscatter-and-oblique-ionograms-based joint inversion method for ionospheric parameters. The method comprises the following steps of: determining an ionospheric model required by the backscatter detection and oblique detection joint inversion as a quasi-parabolic model; setting parameters of the ionospheric model, and calculating by using the set ionospheric parameters to obtain a simulated backscatter ionogram front edge and a simulated oblique ionogram; adding random errors into the simulated backscatter ionogram front edge and the simulated oblique ionogram, wherein the simulated backscatter ionogram front edge and the simulated oblique ionogram into which the random errors are added serve as the backscatter ionogram front edge and the oblique ionogram for the final inversion; and performing data sampling on the backscatter ionogram front edge and the oblique ionogram which are used for the final inversion and comparing the difference between the inversed result and the set parameters of the ionospheric model to judge the effectiveness of a retrieval algorithm, wherein the sampled data serves as the input of the inversion. By introducing the novel ionospheric joint detection technology and taking detection data, in different forms, of the same detection area as the input of the retrieval algorithm, the precision and stability of the inversion are effectively improved.

Description

technical field [0001] The invention relates to the technical field of ionospheric inversion and reconstruction, in particular to a method for jointly inverting ionospheric parameters based on backscattering and oblique ionograms. Background technique [0002] With the wide application of HF radio waves in broadcasting, communication, radar and other fields, the research on HF channel ionosphere is getting more and more in-depth. The ionosphere has characteristics that change with time and space, so it is very important to detect the ionosphere in real time and understand the structure of the ionosphere. Ionospheric inversion is a technique to obtain the state of the ionosphere based on real-time detection data. [0003] In the ionospheric inversion problem, the inversion of ionospheric model parameters based on the model is more commonly used. Based on the model method, scholars at home and abroad have developed a variety of ionospheric parameter inversion methods using d...

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a method for jointly inverting ionospheric parameters based on backscatter and oblique ionograms to solve many problems existing in existing detection methods

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