摘要
国际地磁参考场(IGRF)是一种表示地磁场正常场及其长期变化的数学模式——球谐模式。为使用高斯级数表达式,推导出了Schmidt-Legendre函数的递推公式,编制了计算各种坐标系的地磁三分量和地磁场总强度及其它地磁要素的程序,以便于对航磁数据进行正常场改正。
The International Geomagnetic Reference Field (IGRF) is defined as a mathematicalmodel (spherical harmonic model) of the normal geomagnetic field and its secularvariation. In order to use the Gaus Series expression, the recurrence formulas of Schmidt-Legendre Fuction has been deduced. The program for the calculation of the total intensityand three components and the other geomagnetic elements of the normal geomagneticfield in various coordrinate systems has been coded, so as to perform the normal geomag-netic field modification from aeromagnetic data.
出处
《铀矿地质》
CSCD
北大核心
1992年第1期48-52,共5页
Uranium Geology
关键词
地磁场
国际参考场
正常场
计算
International Geomagnetic Reference Field
Spherical harmonic coefficients
Gaus series expressions
Coordinates transformation
Schmidt-Legendre Function
