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

A kp index, geomagnetic technology, applied in measurement devices, electrical/magnetic exploration, radio wave measurement systems, etc., can solve problems such as no definite mode, unsatisfactory effect, and inability to realize real-time calculation, and achieve stable calculation results.

Active Publication Date: 2020-02-28
NAT SATELLITE METEOROLOGICAL CENT +1
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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

Method used

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

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Embodiment 1

[0052] The K index is an index used by a single geomagnetic station to describe the intensity of geomagnetic disturbances in every 3 hours of the day, called the three-hour index or magnetic index. In 1938, the Nimeck Geomagnetic Observatory in Germany first adopted this index. This is a quantitative grading index, which is divided into 10 levels from 0 to 9. The larger the number, the stronger the geomagnetic disturbance. Each day is divided into 8 time periods, the first time period is from 00:00 to 02:59, the second time period is from 03:00 to 05:59, and the eighth time period is from 21:00 to 23:59. A K value is determined for each period, and the value of K is determined by the magnitude of pure interference changes in each period. The magnitude of the pure disturbance change is the magnitude of the pure geomagnetic disturbance after the solar quiet day and the lunar day are eliminated, that is, the difference between the maximum value and the minimum value of the horiz...

Embodiment 2

[0090] This embodiment provides a retrieval system of geomagnetic Kp index, such as image 3 As shown, the inversion system includes: a geomagnetic field observation unit, a geomagnetic field disturbance amplitude calculation unit, a cumulative geomagnetic disturbance amplitude value calculation unit, and a geomagnetic Kp index inversion unit.

[0091] The geomagnetic field observation unit is used to record the geomagnetic field observations on the observation day, and select the horizontal component observations therein to form the time series F of the horizontal component observations i ;

[0092] The calculation unit of the magnitude value calculation unit of the geomagnetic field is connected with the geomagnetic observation unit, and is used to receive the time series F of the horizontal component observation values ​​observed by the geomagnetic observation unit i , and remove the background magnetic field Fb of the geomagnetic field from the horizontal component observ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/40
CPCG01V3/40
Inventor 薛炳森周率贺晓冬李绍帅
Owner NAT SATELLITE METEOROLOGICAL CENT
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