Key Features Summary statistics Mode Description Reference
Distance Mean, SD, IQR, Skewness, Kurtosis GPS Euclidean distance between consecutive GPS points along a trajectory. [c@32060]
[c@32061]
[c@32062]
Speed Rate of change in net displacement
Net displacement The squared net displacement between the current relocation and the first relocation of the trajectory.
Height Relative altitude of a point along the trajectory from the ground.
Relative turning angle A relative angle between successive GPS points along a trajectory.
Vector magnitude of acceleration Accelerometer A square root of the squared sums of directional accelerations along X,Y and Z axes.
Peak intensity of acceleration Max The number of the signal (acceleration) peak appearances within a certain period of time ‘t’ [c@32059]
[c@32063]
Dominant frequency of acceleration Max The peak (max) acceleration obtained after performing a Fast Fourier transform on the acceleration signal.
Signal power of acceleration Mean The instantaneous power of the acceleration signal – calculated as the square of the acceleration magnitude at instant ‘t’