Fig. 12From: Experimental study on improving the accuracy of marine gravimetry by combining moving-base gravimeters with GNSS antenna arrayFourier time–frequency analysis of horizontal velocities. a, c and e are the single-sided amplitude spectra of the horizontal velocities of S1-2, S1-1 and X1-3, respectively; the small windows are enlarged views of the low-frequency band. b, d, and f are the corresponding time-domain horizontal velocitiesBack to article page