^pUniversity,;
School;
of;
Earth;
Sciences;
and;
Engineering,;
Nanjing;
210098,;
China.;
^pFirst;
Geological;
Brigade;
of;
Jiangsu;
Geology;
and;
Mineral;
Exploration;
Bureau,;
Nanjing;
210041,;
China.;
重力梯度张量; 滤波方法; 重力异常; 子域; 边缘增强; 高斯白噪声; 滤波窗口; 过滤方法;