US Patent 9420412 Vehicle position calibration method and apparatus

A vehicle position calibration method and apparatus thereof are disclosed. The vehicle position calibration method is applicable to a vehicle having a mobile calibration positioning device and at least a vehicle having a positioning device to be calibrated. The method starts with the mobile calibration positioning device transmitting a message of positioning precision level to the positioning device to be calibrated. Then, the positioning device to be calibrated sends a calibration request to the mobile calibration positioning device according to the message of positioning precision level; then the mobile calibration positioning device detects a relative position between the mobile calibration positioning device and the positioning device to be calibrated according to the calibration request. The mobile calibration positioning device computes and transmits a calibrated position to the positioning device to be calibrated; and the positioning device to be calibrated updates the position of the positioning device to be calibrated.