中文摘要：

在计算重力梯度时使用波数域，引入别列兹金滤波因子来压制求导过程的误差放大，理论模型试验表明其空间参量图更接近实际；通过对谐波数N和滤波因子指数n的选择，压制复杂地形中干扰源的影响，并阐述了N和n的关系；通过对Vzz和Vxz沿测线方向的水平求导来精确确定台阶转折点位置，并根据重力异常曲线和地质资料剔除无意义的波峰和波谷，减少计算工作量。

英文摘要：

This article used wave number space in the calculation of the gravity gradient,the introduction of B. M derivative filter factor to suppress the error amplification process. Model experiments show that the spatial parameters is closer to the aetual figure;Filtering the harmonic number N and the choice of filter factor index n to suppress interference sources in the complex terrain, and describe the relationship between N and n ; Gravity gradient method is usually the peak and trough for Vzz choice with the subjectivity of human experience,Author think by Vzz and Vxz of the lateral line along the horizontal direction of the derivative position to aceurately determine the level turning point,using gravity anomalies curves and geological data to eliminate meaningless peaks and troughs, to reduce the computational workload.