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本文给出了利用卫星重力梯度张量TT_(zz)分量恢复地球重力场模型的最小二乘配置法与调和分析法的基本原理公式,通过数值实验对两种方法确定地球重力场模型的精度进行了比较,最后总结评述了两种方法在反演地球重力场模型时的优缺点.
In this paper, the basic principles and formulas of least square collocation method and harmonic analysis method for recovering the Earth’s gravitational field from satellite gravitational gradient tensor (TTZ) components are given. The accuracy of the two methods to determine the Earth’s gravitational field model Finally, the advantages and disadvantages of the two methods in retrieving the Earth’s gravitational field model are summarized.