摘要 : Over 35 years ago, a theory was developed by Sawyers [K. N. Sawyers, J. Acoust. Soc. Am. 44, 523-524 (1968)] to predict the underwater sound pressure field due to loading of the water surface with an idealized sonic boom. In Sawye... 展开 Over 35 years ago, a theory was developed by Sawyers [K. N. Sawyers, J. Acoust. Soc. Am. 44, 523-524 (1968)] to predict the underwater sound pressure field due to loading of the water surface with an idealized sonic boom. In Sawyers' theory, the sonic-boom N wave was taken to be uniform and of infinite extent in the cross-track direction, i.e., the horizontal direction perpendicular to the direction of motion. The resulting prediction is thus two-dimensional, depending only on the in-track position and the depth into the water. The current paper presents a generalization of Sawyers' theory from two to three spatial dimensions. Three sample problems are solved, with one of the results showing that the three-dimensional method correctly reproduces Sawyers' two-dimensional results when the surface disturbance is uniform in crosstrack. Results from the final problem provide actual predictions of underwater sound generated by a cruise missile flying at an altitude of 20 feet and a speed of 2500 ft/s. (c) 2006 Acoustical Society of America. 收起