“…In the maritime tracking and control system, the angle self tracking is the pre-condition for the completion of the measurement and control task [1,2]. At present, most of the angle tracking systems adopts the dual channel monopulse tracking scheme, which is of the properties such as high precision, hig data speed, far distance and strong anti-interference ability [3,4]. However, the phase difference between the sum and difference channels should be calibrated to obtain the angle error voltage correctly.…”