| IMU | Inertial Measurement Unit |
| US | Ultrasounds |
| IR-LI | Light Intensity Infrared |
| VC | Video Camera |
| ODR | Output Data Rate |
| IR-ToF | Infrared Time-of-Flight |
| AoI | Angle of Incidence |
| IFD | Inter-Foot Distance |
| D-MuSe | Distance-MultiSensing |
| MIMU | Magnetic and Inertial Measurement Unit |
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