Table A3.
List of features for snowplow and snowplow-steered turn prediction.
| Feature | Description |
|---|---|
| Turn_DurationSec | Duration of Turn (s) |
| mean_TD_Gyro_Roll_filt | Mean gyroscope roll axis angular velocity of turn (mean of left and right boot) (rad/s) |
| max_TD_Symmetry_Roll | Maximum symmetry of the roll axis angular velocity of turn between left and right boot (rad/s) |
| max_EA_Edge_Angle | Maximum estimated inclination angle of turn (mean of left and right boot) (degree) |
| locEA_Edge_Angle | Position (1–100) of the max estimated inclination angle of the turn |
| mean_EA_Edge_Angle | Mean estimated inclination angle of turn (mean of left and right boot) (degree) |
| mean_EA_Edge_AngleLeftRight | Mean of the maximum estimated inclination angle of the left and right foot of turn (degree) |
| mean_ACC_Z_filt | Mean of the maximum of the acceleration of the Z-axis of left and right foot of turn (m/s2) |
| mean_ACC_Y_filt | Mean of the maximum of the acceleration of the Y-axis of left and right foot of turn (m/s2) |
| mean_ACC_X_filt | Mean of the maximum of the acceleration of the X-axis of left and right foot of turn (m/s2) |
| mean_GF_GForce_PitchYaw | Mean resultant frontal plane acceleration of turn (mean of left and right boot) (m/s2) |
| max_GF_GForce_PitchYaw | Maximum resultant frontal plane of turn (mean of left and right boot) (m/s2) |
| mean_GF_GForce_PitchYaw_LeftRight | Mean of the maximum resultant frontal plane acceleration of the left and right foot of turn (m/s2) |
| Left_Right_Acc_filt | Mean of the maximal acceleration of the left and right foot of each turn (m/s2) |
| mean_TD_AbsRRate_Roll | Mean absolute roll axis angular velocity (mean of left and right boot) (rad/s) |
| mean_TD_Decision_Roll | Filtered (using a fourth-order, zero-lag, low-pass Butterworth filter with cut-off frequency of 0.5 Hz) roll axis angular velocity (mean of left and right boot) (rad/s) |
| mean_TD_Gyro_Roll | Mean gyroscope roll axis angular velocity of turn (mean of left and right boot) (rad/s) |
| mean_TD_Symmetry_Roll | Mean symmetry roll axis angular velocity of turn between left and right boot (rad/s) |
| sd_TD_Symmetry_Roll | Standard deviation of symmetry of the roll axis angular velocity of turn between left and right boot (rad/s) |
| sd_TD_Symmetry_Yaw | Standard deviation of symmetry of the yaw axis angular velocity of turn between left and right boot (rad/s) |