Study on the propagation characteristic of electromagnetic wave based on WUSN

Wireless underground sensor network (WUSN) is widely used in agriculture, frontier defense, and other fields with great research value. This paper takes the propagation characteristics of the electromagnetic waves that propagate in WUSN as research target, and systematically tests the effect of influence factors on the communication quality of electromagnetic waves. The influence factors are chosen on the basis of the propagation theory of electromagnetic waves. Specifically, the influence factors include the burial depth of sensor sub-node, the horizontal distance between nodes, the communication frequency, and the thickness of snow. Moreover, the experiments are carried out in normal and snow-covered soil. The propagation characteristic of electromagnetic waves is measured by received signal strength (RSS) and symbol error rate (SER). Finally, the selection of communication frequency in different application scenarios is concluded. The conclusions have a great significance for guiding the arrangement of WUSN nodes in different scenarios.