Abstract: [Purposes] With the successful formation of the BeiDou-3 satellite network,the industrialization trend of BeiDou technology applications has become evident.Beyond providing location services,BeiDou also possesses short message transmission capabilities independent of operator signals.This paper aims to address the challenge of personnel safety supervision in highway tunnel construction under conditions lacking operator signal coverage. [Methods] A positioning system combining BeiDou short messages and UWB is established in a highway tunnel construction project without operator signal coverage. [Findings] Relying on the BeiDou short message receiving and sending terminal in the open area at the tunnel entrance,the system realizes the stable real-time transmission of tunnel workers' real-time locations and early warning information without operator signals. [Conclusions] It effectively ensures the safety of personnel during highway tunnel construction and improvs the intelligence and refinement level of construction safety supervision.

Key words: BeiDou, location service, UWB, highway construction, tunnel construction, personnel safety