Ionospheric Disturbance Propagation Measurement Method and System Based on Three Station Data Feature Points

Abstract

The invention discloses a three observation station data feature point-based ionospheric disturbance propagation measurement method and system. The method includes the following steps that: a local coordinate system is built, monitoring data feature points are selected, and time when an anomaly arrives at three points is obtained, and the propagation time difference of anomaly disturbance is obtained; and the slope of an anomaly propagation path and the coordinates of projection points in a disturbance propagation direction are calculated, and the propagation velocity and azimuth angle of the anomaly are calculated, and measurement results are obtained. According to the three observation station data feature point-based ionospheric disturbance propagation measurement method and system of the invention, the velocity and direction of ionospheric disturbance propagation can be accurately and automatically calculated with only a small number of feature points based on the precise geometrical relationships of observation station puncture points under a condition that ionospheric disturbance time is short. The three observation station data feature point-based ionospheric disturbance propagation measurement method and system have great scientific significance and application value for the study of the solar-terrestrial space environment, ionosphere, magnetosphere coupling and traveling ionospheric disturbance propagation patterns.

Description

technical field [0001] The invention relates to the technical field of ionospheric fluctuation propagation analysis, in particular to a technical solution for ionospheric disturbance propagation measurement based on the spatial relationship of three measuring stations and monitoring data feature points. Background technique [0002] As the upper atmosphere of the earth is subjected to too severe radiation, atoms and molecules are ionized to form a large number of free electrons, thus forming an ionosphere within the altitude range of 60-2000km. Ionospheric disturbance refers to the drastic change of ionospheric structure deviating from its normal shape, also known as ionospheric disturbance. The ionospheric disturbance can be caused by the sudden change of the ionization source, the non-equilibrium dynamic process, the unstable magnetocurrent dynamic process and some human factors. Ionospheric disturbances will have a serious impact on satellite communications and GNSS posi...

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Problems solved by technology

Among them, the distance-time graph method is mainly calculated according to the slope on the graph, which has poor accuracy and large deviations in the calculation results; the three-station interferometry method requires a long stable disturbance waveform, and the calculation process is very complicated and is easily affected by external factors. influence, the calculation result is inaccurate when the disturbance waveform is short

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