Research on infrasonic directional simulation technology based on phased parametric array

This paper proposes a method based on the phased parametric array to solve the problem of the orientation of infrasonic waves in the air. Firstly, the principles and models of the phased parametric array are introduced, and the models are analyzed via simulation, thus proving that this orientation method can generate infrasonic waves with good directivity. At the same time, the Doyle-Chebyshev beam control method is used to suppress the sidelobes and concentrate the generated infrasonic waves in the direction of the main axis. Finally, the important parameter, namely the infrasonic wave array length, is analyzed to find out at which length the infrasound source level reaches the approximate peak. Through comparison, it is found that the actual array length is smaller than the effective array length.