A Study on Feedback and Feedforward Control of High Power Transmitters for Active Sonar

Abstract

Active sonar is mainly used for underwater communication and detection. Sensor array of active sonar has the impedance characteristics that the changes greatly and instantaneously due to mutual impedance. The impedance characteristics maybe damage the sensor array and high-power transmitter to cause over-driving conditions. Therefore, the power controller of the high-power transmitter for driving sensor array is required to drive with speed and refinement. This paper proposes and compares both a feedback and feedforward controllers that has the power limitation for driving high power stably.