Geomagnetic Kp index inversion method and system, electronic device and storage medium

Abstract

The invention provides a geomagnetic Kp index inversion method and system, an electronic device and a storage medium. The method comprises the following steps: removing a background magnetic field ofa geomagnetic field from geomagnetic field observation data to obtain geomagnetic field disturbance amplitude values DFi of an observation day at different moments; calculating an accumulated geomagnetic disturbance amplitude value DTj of each time period of the observation day according to the geomagnetic disturbance amplitude values DFi; according to the accumulated geomagnetic disturbance amplitude value, inversing the geomagnetic Kp index by a formula Kp = Aj[lg(DTj) + Bj], wherein different time periods in one day are corresponding to different Aj and Bj, and j is a time period serial number. According to the method, the geomagnetic field disturbance amplitude value serves as the calculation basis, the geomagnetic Kp index is inverted by adopting the accumulated geomagnetic disturbance amplitude value, and the calculation result is stable. According to the method, a statistical relationship can be directly established between a K index observation value and a Kp index of a singlegeomagnetic observation station, and real-time calculation can be realized. Through the inversion system of the geomagnetic Kp index, the electronic device and the storage medium, the inversion methodof the geomagnetic Kp index can be realized, and the same beneficial effects are achieved.

Description

technical field [0001] The invention relates to the technical field of geomagnetic field observation, in particular to a geomagnetic Kp index inversion method, system, electronic device and storage medium. Background technique [0002] The global distribution and short-term variation characteristics of the geomagnetic field will not only directly affect long-distance pipelines, but also increase the input of matter and energy outside the magnetosphere with the fluctuation of the geomagnetic field, causing disturbances in the ionosphere and increases in the density of the upper atmosphere. The direct effect is to reduce the quality of long-distance communication, reduce the accuracy of navigation, and increase the resistance of satellite operation. [0003] In order to effectively deal with the above effects, there are many models at home and abroad that can calculate and evaluate the changes in the ionosphere and the atmosphere, such as the ionospheric distribution model IRI...

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Problems solved by technology

However, the change of the global geomagnetic field is caused by external factors, so the changes of high-latitude stations are interrelated with those of mid-latitude stations. In this regard, many studies have proved that the geomagnetic Kp index can be calculated using the data of mid-latitude stations. But the effect is not ideal

[0005] There are also some studies at home and abroad that try to use the K index of mid-latitude geomagnetic stations to calculate the Kp index. However, these studies also have great deficiencies. The geomagnetic Kp index is calculated from the detection data, but the modulation of the geomagnetic Kp index by the solar wind and other external conditions has no definite mode, so the calculation result is unstable; However, the K index of a single station needs to deduct the effect of the Sq current system, which usually delays for more than 1 day and cannot realize real-time calculation

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