Abstract: In order to solve the problem that it is difficult to calibrate the field antenna delay parameters of UWB card reader in coal mine due to the large antenna difference and the different installation length of feeders, a field antenna calibration method based on hand-held card reader and incremental PID control algorithm is proposed. In this method, the distance between the antenna to be calibrated and the identification card is measured by a specific matching hand-held card reader, and the measured distance is transmitted to the card reader through UWB communication. Finally, the incremental PID control algorithm is used to quickly adjust the antenna delay parameters to meet the measurement requirements. The results show that the antenna delay parameter calibration can be completed in 10 seconds, and the ranging accuracy is less than 30 cm.