The core function of the system is the tunnel positioning function. The additional personnel vehicle position is sent, the alarm report and the evacuation command are issued three functions. The one-way flight precision positioning system innovatively developed by Xingte based on UWB positioning principle can meet the above requirements. UWB is an ultra-wideband radio technology that meets the requirements of underground engineering location and communications. The UWB positioning system includes at least one base station and a tag, and the tag and the base station can perform wireless communication, and the distance between the base station and the tag is calculated by using the time when the radio wave is transmitted between the base station and the tag, thereby realizing speed measurement and positioning. Xingte Electric's one-way flight technology has higher capacity and endurance, as well as excellent anti-interference performance.