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Auroral oval boundary position prediction method based on interplanetary and geomagnetic parameters

A technology of boundary position and prediction method, applied in the field of space physics, can solve problems such as impossibility of completion and cumbersome manual determination of the boundary of the aurora egg

Inactive Publication Date: 2015-12-02
SHAANXI NORMAL UNIV
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Problems solved by technology

However, it is very cumbersome to manually determine the boundary of the aurora egg from a large number of images, and it is almost impossible to complete

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  • Auroral oval boundary position prediction method based on interplanetary and geomagnetic parameters
  • Auroral oval boundary position prediction method based on interplanetary and geomagnetic parameters
  • Auroral oval boundary position prediction method based on interplanetary and geomagnetic parameters

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Embodiment Construction

[0055] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0056] see figure 1 , a UVI image aurora egg boundary position modeling and prediction method based on interplanetary and geomagnetic parameters, the present invention includes 4 kinds of UVI aurora egg boundary models based on interplanetary and geomagnetic parameters, by UVI aurora image preprocessing module, aurora The egg boundary automatic segmentation module, the interplanetary and geomagnetic parameter acquisition module, the data set construction module, the regression modeling module, and the prediction and evaluation module complete the following specific steps:

[0057] Step 1: UVI aurora image preprocessing

[0058] Before extracting and modeling the aurora egg boundary, it is necessary to preprocess the high-noise Polar satellite UVI aurora image to eliminate noise points and remove invalid background pixels, as follows:

[0059] Step 1.1: Because auror...

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Abstract

The invention discloses an auroral oval boundary position prediction method based on interplanetary and geomagnetic parameters. Estimation is performed on geomagnetic latitude of auroral oval boundaries in the equator direction and the pole direction at all magnetic places according to interplanetary and geomagnetic environment, and the method can be used in prediction for an auroral oval boundary position in space weather research. The method comprises the following achieving steps: (1) UVI image pre-processing, (2) automatic division of the auroral oval boundaries, (3) obtaining of the interplanetary and geomagnetic parameters, (4) construction of a data set, (5) regression modeling, (6) prediction of the auroral oval boundary position, and (7) evaluation of a prediction result. According to the experiment result, the method can predict the auroral oval boundary position at an about 1.7MLAT average absolute error in a relatively accurate manner, and the method has great practical value in the space weather prediction aspect.

Description

technical field [0001] The invention belongs to the field of space physics, relates to aurora physics, in particular to a method for predicting the boundary position of an aurora egg based on interplanetary and geomagnetic parameters. Background technique [0002] The aurora egg is an elliptical belt-shaped area formed by the aurora particle settlement and the magnetic pole center in the north and south poles of the earth. It is the area affected by the energy particles from the sun on the earth. The auroral oval can characterize and predict space weather on a global scale, so a good auroral oval model can effectively help understand space weather and predict its impact on polar and subpolar regions. [0003] The existing research work on the size and position of the auroral oval is divided into two categories: one is qualitative analysis, such as discussing the influence of the By and Bz components of the interplanetary magnetic field (IMF) on the boundary position of the a...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/60
Inventor 杨秋菊马骁辛经纬
Owner SHAANXI NORMAL UNIV
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