High-precision personnel positioning system and method for three-dimensional space in plant area

The invention discloses a high-precision personnel positioning system and method for a three-dimensional space in a plant area. In the system, an onsite data acquisition layer comprises a UWB base station, a fusion positioner and an inertial navigation relay base station, the fusion positioner comprises an inertial navigation module and a UWB module, the inertial navigation module corrects the position based on ranging data of the UWB module, and the inertial navigation relay base station transmits the corrected position data to a control analysis layer; the control analysis layer comprises afusion positioning system and a BIM system, the fusion positioning system receives the corrected position data, and the three-dimensional coordinates of the personnel and the specific positions of thepersonnel in the production plant area site are displayed in the BIM system. According to the method, independence of the inertial navigation system is fused with positioning stability and high precision of UWB, the UWB high