Elevation angle backscatter ionogram inversion method containing ionosphere oblique measurement information under multiple constraint conditions

Abstract

The invention discloses an elevation angle backscatter ionogram inversion method containing ionosphere oblique measurement information under multiple constraint conditions, which comprises the following steps: step 1, acquiring a group distance-elevation angle distribution curve with fixed frequency, and determining tracing points; step 2, acquiring an oblique detection ionosphere diagram frequency-group distance curve; step 3, sampling tracing points of ionogram; step 4, performing ionosphere parameter inversion; step 5, generating an electronic concentration profile. According to the backscattered ionogram electronic concentration inversion method based on elevation scanning, ionosphere monitoring equipment which is widely distributed at present can be fully utilized, ionosphere monitoring network cooperation is achieved, and high-precision ionosphere monitoring is achieved; the ionospheric monitoring quality of the ionospheric monitoring network is improved; and a current ionospheric monitoring means can be supplemented and enriched.

Description

technical field [0001] The invention belongs to the field of ionospheric electron concentration simulation calculation, in particular to a backscatter ionogram electron concentration inversion method based on elevation angle scanning in the field. Background technique [0002] Short-wave propagation mainly depends on the reflection of the ionosphere. In order to achieve good short-wave communication, it is necessary to make correct adjustments to the changes in the ionosphere, the propagation conditions, and the effect of the best operating frequency that may be used in normal and abnormal conditions. Timely understanding, and the characteristics of the ionospheric medium lead to the obvious weakness of short-wave communication: short-wave communication has a communication blind zone; the multipath effect is serious, causing the multipath delay of the signal to spread, causing frequency selective fading; the random fluctuation of the ionosphere causes the signal phase Fluctu...

AI Technical Summary

Problems solved by technology

[0002] Short-wave propagation mainly depends on the reflection of the ionosphere. In order to achieve good short-wave communication, it is necessary to make correct adjustments to the changes in the ionosphere, the propagation conditions, and the effect of the best operating frequency that may be used in normal and abnormal conditions. Timely understanding, and the characteristics of the ionospheric medium lead to the obvious weakness of short-wave communication: short-wave communication has a communication blind zone; the multipath effect is serious, causing the multipath delay of the signal to spread, causing frequency selective fading; the random fluctuation of the ionosphere causes the signal phase Fluctuations, resulting in Doppler broadening and time-selective fading; large variability in ionospheric parameters, making short-wave communication performance change with time, frequency, and location

[0003] These weaknesses make the effectiveness, reliability and adaptability of short-wave communication worse

Images