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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 properties of quasi-orthogonal Legendre function and the spherical harmonic analysis of geomagnetic field are introduced. The calculation software of the earth’s magnetic field is designed. It is found that the model magnetic field can effectively provide a reference for field geomagnetic survey.