The algorithm used in the past was usually based on Fourier transform, but there are clearly limitations in the method, because the seismic amplitude spectrum that it evaluated is the function of time windows.
The algorithm used in the past was usually based on Fourier transform, but there are clearly limitations in the method, because the seismic amplitude spectrum that it evaluated is the function of time windows.
如果所选时窗过短，振幅谱会与变换窗函数褶积，失去频率的局部化特徵，而且过短的时窗会使子波的旁瓣呈现为单一反射的假像。