Fig. 20
From: Estimation of phase velocity using array observation of microtremors with arbitrary shape
Comparisons of estimated phase velocities obtained through DSPAC method with those obtained through conventional methods using the observed data. The legend is the same as those in Figs. 11 and 12. The properties of each method agree well with the results of the numerical calculations. To avoid spatial aliasing in the analysis of the FK method, we searched over a limited range of phase velocities, which resulted in the misalignment with the target value in the frequency range above 12 Hz