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提出利用地面重力异常数据计算地面扰动位径向二阶梯度，将该梯度的积分表达式转换为卷积形式的谱表达式，便于应用ＦＦＴ／ＦＨＴ技术进行快速计算。这一将地面重力异常化为重力梯度的实用算法为将卫星重力梯度和航空重力梯度观测数据与地面重力数据的联合处理提供了一种有效途径。最后，以本文导出的数学模型为基础，给出了模型（ＷＤＭ９４）数据的试算结果并作了分析
In this paper, we propose to calculate the second order radial gradient of ground perturbation using the data of ground gravity anomalies, and convert the integral expression of the gradient into the spectral form of convolution form, which is convenient for fast calculation by FFT / FHT. This practical algorithm of anomalous ground gravity to a gravitational gradient provides an effective way to combine satellite gravity gradients and aerogravity gravity observations with surface gravity data. Finally, based on the mathematical model derived from this paper, the experimental results of the model (WDM94) data are given and analyzed