Modeling and Forecasting of the Variable Geomagnetic Field by Support Vector Machine
详细信息
- 责任者：Yi Shihua (The Second Artillery Engineering University ; Xi’an 710025 ; China) ; Liu Daizhi
- 刊名：Chinese Journal of Geophysics
- 出版年：2013
- 卷期：56(1)
- 关键词：地磁场 ; geomagnetic field ; 支持向量机 ; support vector machine
- 页码：p.127-135
- 图表：illus., 3 tables, 27 refs.
- 分类号：0400
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
Modeling and forecasting of the variable geomagnetic field is an important research topic in geomagnetic navigation and space environment monitoring.The variable geomagnetic field belongs to the sun-earth system,it depends on a variety of factors,and the present value of the variable geomagnetic field is related to the past.In this paper,we established the comprehensive model of variable geomagnetic field by the support vector machines.The model combines the space and ground monitoring data,and it uses the ground measuring data of the variable geomagnetic field,local time,the solar radio flux,the southern component of the interplanetary magnetic field as input.Experiments show that the mean absolute error of the model forecasting three hours are less than 1.61 nT when Kp is less than 4.
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