Precise positioning system and method for underground mining operation personnel

The invention relates to a precise positioning system and method for underground mining workers, and the method comprises the steps: 1, equipment installation: installing a plurality of positioning base stations in an underground mine, and enabling the workers to carry or wear positioners; step 2, position positioning: a positioning base station sends out a positioning signal, a positioner sends out a response signal after receiving the signal, and the time difference of arrival and the signal transmission speed of the signal are obtained; step 3, data processing: denoising, filtering and calibrating the signal arrival time difference and the signal transmission speed obtained in the step 2, and establishing a model; step 4, positioning calculation: based on a Kalman filtering algorithm, calculating the position of the target object through the model in the step 3; and step 5, outputting a result: outputting the calculated position of the operator to a master control end outside the mine to complete positioni