A Test Based on Beam Angle of Ultrasonic Transducer Array

Ultrasonic transducer array is the crucial parts of the audio directional transmission weapon system. Beam angle is also an important performance index. In order to make a change on the disordered actuality of audio signal beam angle test methods, improve the testing efficiency and accuracy, and shorten the testing time, directivity model of ultrasonic transducer array is analyzed in this paper. By a digital simulation, the ranges of the angle and intensity are obtained, and angle step in test was put forward. Through parametric array theoretical calculation and experimental verification, the test distance is acquired. Finally, a new beam angle test method has been proposed. It can be the reference and basis for the beam angle testing of the audio directional transmission weapon system based on ultrasonic transducer array.