| AG2UG | Aboveground to Underground |
| IoUT | Internet of Underground Things |
| LPWAN | Low-Power Wide Area Network |
| MI | Magnetic Induction |
| RFID | Radio Frequency Identification |
| RSSI | Received Signal Strength Indication |
| UG2AG | Underground to Aboveground |
| UG2UG | Underground to Underground |
| VWC | Volumetric Water Content |
| UAV | Unmanned Aerial Vehicle |
| WSN | Wireless Sensor Network |
| WUSN | Wireless Underground Sensor Network |
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