Radar calibration device for calibrating radar system and operation method therefor

An operation method for calibrating a radar system installed on a vehicle, wherein the radar system comprises an indication unit, a radar control unit and a plurality of radar modules, and each of the plurality of radar modules has a detection area and a warning area within the detection area, comprising:

• setting the radar control unit, according to a plurality of positions of the plurality of radar modules being installed on the vehicle, to combine the plurality of warning areas into a general warning area;
• setting the indication unit via a connection port of the vehicle according to a plurality operation signals of the vehicle;
• receiving a calculated speed information of the vehicle through the connection port of the vehicle while the vehicle moving and a measured speed information, provided by a speed measurement module, and
• performing a speed compensation calibration on the calculated speed information with the measured speed information to obtain a calibrated speed information.