将波数作为变数所进行的研究称为波数域。
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.
等效斜视的波数域算法是一种适用于大距离徙动高分辨率星载合成孔径雷达成像的优化算法。
Equivalent squint wavenumber domain algorithm is an optimized algorithm suitable for precise imaging of high resolution spaceborne SAR with large range cell migration.
利用多级汇水盆地在频率域(或波数域)中的频率差异，通过滤波方法逐级分离，并提取它们。
In this paper, multilevel water gathering basins are separated and extracted automatically with filtering from geographic map based upon their differences in frequency domain.
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