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. 2019 Nov 13;19(22):4947. doi: 10.3390/s19224947

Figure 4.

Figure 4

An example of successive diagonal stride obtained from GNSS data. Upper figure is the raw waveform of head vertical displacement obtained from GNSS data, the middle is the change in head altitude (slope inclination) calculated from the 0.9 seconds moving average of head vertical displacement, and the bottom is the net vertical displacement calculated from vertical head displacement–head altitude.