杨梦雨,管雪元,李文胜.IGRF国际地磁参考场模型的计算[J].电子测量技术,2017,40(6):97-100
IGRF国际地磁参考场模型的计算
Calculation of IGRF international geomagnetic reference field model
  
DOI:
中文关键词:  IGRF;地磁;等值线图  球谐模型;球谐系数
英文关键词:IGRF  geomagnetic  contour map
基金项目:
作者单位
杨梦雨 南京理工大学瞬态物理国家重点实验室南京210003 
管雪元 南京理工大学瞬态物理国家重点实验室南京210003 
李文胜 南京理工大学瞬态物理国家重点实验室南京210003 
AuthorInstitution
Yang Mengyu State Key Laboratory of transient physics, Nanjing University of Science and Technology, Nanjing 210003, China 
Guan Xueyuan State Key Laboratory of transient physics, Nanjing University of Science and Technology, Nanjing 210003, China 
Li Wensheng State Key Laboratory of transient physics, Nanjing University of Science and Technology, Nanjing 210003, China 
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中文摘要:
      在研究地磁场时,首先应该建立地磁场及其长期变化的分布模型,而用以描述地球地磁场和地球磁场长期变化的地磁场模型的国际地磁参考场(IGRF)是目前国际上通用的标准,国际地磁和高空大气物理学协会(IAGA)给出了每5年的IGRF和相应的球谐系数。使用球谐分析方法来表示地球的基本磁场和它长期变化的分布,通常称为地磁场的球谐模式。通过编写Java程序完成了地磁场的解算,然后用解算的地磁数据,画出地磁要素等值线图,且误差在合理范围内。因此通过此程序可以解算出任意点的地磁要素值并且绘制出其等值线图。
英文摘要:
      In the study of geomagnetic field, firstly, the distribution model of geomagnetic field and its secular variation should be established. While the international geomagnetic reference field (IGRF) is used to describe the global geomagnetic field and its secular variation of the geomagnetic field model standard, the international association of geomagnetism and aeronomy (IAGA) every five years is given a set of spherical harmonic coefficients and the international geomagnetic reference field (IGRF). The distribution of the earth′s basic magnetic field and its secular variation is indicated by the spherical harmonic analysis method, which is usually called the spherical harmonic mode of the geomagnetic field. In this paper, through the preparation of the program to complete the calculation of the geomagnetic field, and then use the calculation of the geomagnetic data, draw the geomagnetic elements contour map. Therefore, this program can be calculated at any point of the geomagnetic elements of the value and draw its contour map.
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