Abstract:Fast Fourier transform advances the gravitational and magnetic data processing from single space domain to frequency domain, The two domain processing systems make up each other"s deficiencies and supplement each other, thus obviously improving the processing and interpretation techniques. The frequency spectrum theory and experimental model show that the trends of gravitational and magnetic abnormals caused by geological body are perpendicular to the trends of the frequency spectra of the abnormals in frequency domain, Various directional filters can be designed according to the directional characteristic of the frequency spectra of gravitational and magnetic fields. The signals on two different directions are enhanced or attenuated by the directional ellipse filter, that is to say, by the length difference of its a and b axes as well as the ellipse center position (i. e.the center frequency of the filter.This filter can effectively filter 3D abnormals;particulary, it can identify the local and regional fields whose trends are different.
引用本文:
魏献齐. 椭圆窗方向滤波器在重力资料处理中的应用[J]. 石油地球物理勘探, 1984, 19(6): 556-566.
Wei Xianqi. The application of directional ellipse filter to gravity data processing. OGP, 1984, 19(6): 556-566.