Similar recommendation method and system for coronal mass ejection space environment events

A space environment and recommendation method technology, applied in the interdisciplinary field of space physics and artificial intelligence, can solve the problems of unstable results, no recommended model system for coronal mass ejection space environment events, large prediction time errors, etc.

Active Publication Date: 2021-09-14
NAT SPACE SCI CENT CAS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most models predict the arrival time of coronal mass ejection, without the recommendation function, and the error of the forecast time is large, the res

Method used

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  • Similar recommendation method and system for coronal mass ejection space environment events
  • Similar recommendation method and system for coronal mass ejection space environment events
  • Similar recommendation method and system for coronal mass ejection space environment events

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Experimental program
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Effect test

Embodiment 1

[0055] Embodiment 1 of the present invention proposes a method for similarly recommending a coronal mass ejection space environment event, the method comprising:

[0056] Collect CPA, MPA, CME angular width, linear velocity, initial velocity, final velocity, velocity at 20 solar radii, longitude and latitude coordinates of CME source area, F10 on the day when CME erupts within a set time period .7 index and solar wind average velocity, temperature, proton density, dynamic pressure, plasma β value and magnetic field components in three directions, after preprocessing, get the characteristic parameter values ​​of 18 kinds of coronal mass ejection events;

[0057] Input the characteristic parameter values ​​of 18 coronal mass ejection events into the pre-established and trained CME recommendation model to obtain similar historical CME events and predicted arrival times;

[0058] The CME recommendation model is used to weight the characteristic parameter value according to the wei...

Embodiment 2

[0088] Embodiment 2 of the present invention proposes a similar recommendation system for coronal mass ejection space environmental events. The system includes: a CME recommendation model, a feature parameter acquisition and processing module, and a recommendation output module; the specific processing process is the same as that of Embodiment 1, wherein,

[0089] Feature parameter collection and processing module, used to collect CPA, MPA, CME angular width, linear velocity, initial velocity, final velocity, velocity at 20 solar radii, longitude and latitude coordinates of CME source area within a set time period , the F10.7 index on the day when the CME erupted, and the average velocity, temperature, proton density, dynamic pressure, plasma β value, and magnetic field components in three directions of the solar wind, after preprocessing, the characteristic parameters of 18 CME events were obtained value; preprocessing includes calculating the corresponding daily average value...

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Abstract

The invention discloses a coronal mass ejection space environment event similar recommendation method and system. The method comprises the following steps: collecting CPA, MPA, coronal mass ejection angular width, linear velocity, initial velocity, final velocity, velocities at 20 solar radiuses, latitude and longitude coordinates of a coronal mass ejection source area, an F10.7 index of a coronal mass ejection burst day, and average solar wind velocity, temperature, proton density and dynamic pressure and a plasma beta value and magnetic field components in three directions in a set time period; performing preprocessing to obtain characteristic parameter values of 18 coronal mass ejection events; inputting a pre-established and trained CME recommendation model to obtain historical similar CME events and predicted arrival time; employing the CME recommendation model for carrying out weighting processing on the characteristic parameter values according to the weight of each characteristic parameter, then carrying out distance matching with historical events of a pre-established CME historical database, and finding the nearest historical event.

Description

technical field [0001] The invention relates to the interdisciplinary technical field of space physics and artificial intelligence, in particular to a similar recommendation method and system for coronal mass ejection space environmental events, and is applied to real business applications of space weather forecasting. Background technique [0002] The impact of solar activities on the earth is divided into three rounds of attacks according to the time span, among which coronal mass ejections (Coronal Mass Ejections, CMEs) are the main source of the third round of attacks, which are important events that occur in the solar atmosphere and affect the heliosphere. One of the eruption phenomena. The essence of coronal mass ejection is to throw a large amount of plasma carrying a magnetic field into the helioterrestrial space, and it will cause violent disturbance to the sun's corona and even more layers. When the projectile reaches the Earth, it is called an interplanetary coro...

Claims

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Application Information

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IPC IPC(8): G06F30/27G06Q10/04G06Q50/26G06K9/62G01W1/10G06F119/12
CPCG06F30/27G06Q10/04G06Q50/26G01W1/10G06F2119/12G06F18/214
Inventor 石育榕陈艳红刘四清师立勤王晶晶崔延美罗冰显袁天娇
Owner NAT SPACE SCI CENT CAS
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