(1) Each positioning tag repeatedly sends data frames without interrupting UWB pulses;

(2) the positioning base station receives the UWB pulse sequence sent by the positioning tag;

(3) each positioning base station uses a high-sensitivity short pulse detector to measure the time when the data frame of each positioning tag reaches the receiving antenna;

(4) The positioning engine refers to the calibration data sent by the tag to determine the time difference when the tag arrives at different positioning base stations, and uses the three-point positioning technology and optimization algorithm to calculate the tag position.

(5) TDOA (Time Difference of Arrival) algorithm is often used for multi-base station positioning.

The following functions can be realized:

Satellite navigation and positioning management system

Real-time position display and monitoring: tracking the track of a single person; Find/filter personnel location information by statistical list;

System management: map support, real-time monitoring of base station working status, configuration of various functional parameters;

Electronic fence: a polygon fence; Docking authority, entering+staying+leaving to form a flexible fence rule;

Intelligent attendance: draw the attendance area by yourself and set the attendance shift of the department; Automatically judge late arrival and leave early, and automatically generate attendance reports; Record commuting time and on-the-job time;

Organizational structure and personnel management; Self-defined organizational structure, easy to manage at department level, low battery reminder, paging /SOS record.

Trajectory playback: flexible screen playback according to personnel, time period and area; Intelligent filtering removes time periods without positioning data; Multi-target and multi-speed playback of historical trajectory;

Video linkage: support the camera access system of six major security brands in the world; 360 rotation, multi-angle view of the scene picture violation automatically saved; Multi-target video tracking, automatically switching cameras to track targets;

Automatic inspection: the inspection area is automatically reported for repair; Through accurate positioning and face recognition, the problem of on-site personnel in place is solved to prevent missed inspection and false data; Visualize the process state and realize visual closed-loop management;

Call for help: When an emergency happens, employees can press the "call for help" button in the label and send out a call for help in time. After receiving the distress signal, the management software will pop up a window to remind the supervisor to deal with it in time; When there is a disaster or other abnormal situation in the factory, the supervisor clicks the evacuation instruction on the real-time monitoring interface of the software, and then selects the area to be evacuated through the mouse. The software background will send evacuation instructions to employees in the area. After receiving the evacuation instructions, the labels carried by employees in the area will prompt people to evacuate the dangerous area urgently through audible and visual alarms.