介绍了准正交化勒让德(Legendre)谛合函数的数学性质和地磁场球谐分析方法,设计了地球磁场的计算软件,发现了模型磁场可有效地为野外地磁测量提供参考比对。
The mathematical feature of the quasi-orthonormalization Legendre function and the spherical harmonic analysis method are introduced.The computing software for geomagnetism is designed.The comparison between the geomagnetic data of the model and the actual measured data indicates that the model s data is valuable for the practical application in geomagnetic field survey.