Abstract: To address the issues of insufficient signal coverage and unstable communication in remote and complex forest areas using existing forest fire emergency communication methods, a forest fire vehicle emergency communication system based on Beidou satellite communication is proposed to enhance the emergency communication capabilities of firefighting teams. The designed system is based on the Regional Short Message Service (RSMC) provided by the Beidou Satellite Navigation System. The hardware architecture includes parameter acquisition, relay, and gateway nodes, and a complete communication link is constructed through sensor networks, LoRa wireless communication networks, and Beidou satellite communication networks. The entire process of simulating a fire was tested 3 660 times, and the overall communication success rate of the system was 9.42%. The experimental results show that the forest fire emergency communication system based on Beidou RSMC can establish a reliable communication link in an environment with limited ground networks, effectively meeting the emergency communication needs of forest fire operations..

Key words: forest firefighting, BDS, RSMC, sensor networks, LoRa wireless communication networks