[Retracted] Large-Area Saline-Alkali-Tolerant Rice Growth Environment Monitoring System Based on LoRa+UAV

Table 1

Comparison of main parameters of ZigBee and LoRa communication technology.

Parameters	ZigBee	LoRa
Standard	IEEE 802.15.4	IEEE 802.15.4 g
Transmission rate	10∼250 Kbps	Tens to hundreds of kbps
Transmission distance	100 m	5 km
Power consumption	Low	Low
Cost	Low	Low
Network topology	P2P, tree, star, grid	Star