用波数域的位场转换和快速傅立叶变换理论研究重力归一化总梯度和归一化相位；
The normalized full gradient and phase of gravity anomalies have been studied by potential field conversion and fast Fourier transform in wave-number domain.
这些滤波器应用了波数字格形滤波器概念和宽带带通滤波器的新近似变换方法。
These filters are designed by using the concept of wave digital lattice filter and by making use of a novel approximate transformation method for wide band bandpass filters.
将逆时间和空间傅立叶变换应用于估计频率-波数谱，从而产生该地震数据的轨迹内插。
An inverse temporal and spatial Fourier transform is applied to the estimated frequency-wavenumber spectrum, generating trace interpolation of the seismic data.
将逆时间和空间傅立叶变换应用于估计频率-波数谱，从而产生该地震数据的轨迹内插。
An inverse temporal and spatial Fourier transform is applied to the estimated frequency-wavenumber spectrum, generating trace interpolation of the seismic data.
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