Lora propagation testing in soil for wireless underground sensor networks

LoRa provides new communication solution for wireless underground sensor network. A LoRa propagation testing node is presented in this paper. The configuration of the testing node is discussed in detail. Tests about in-soil LoRa propagation were carried out. The LoRa propagation characteristics related to volumetric water content, burial depth and payload are experimentally evaluated with the testing node. And some suggestions are proposed for LoRa-based WUSN which is applied in soil.