前言 美国AN/BQQ_2声纳是一部性能较好的综合站,它曾列为我们赶超国外先进水平的目标。它增大了垂直俯仰角(被动工作方式+36°～-52°),从而充分利用了声道会聚效应和海底海面反射声场,使作用距离有了大幅度提高。这一措施曾被称为“声纳发展史中较突出的成就”。本文则试图通过对深海声场的粗略分析计算,给出取得这一“突出成就”的理论根据,以便为我们设计水声设备选取俯仰角时提供可靠依据。 Foreword The United States AN / BQQ_2 sonar is a better integrated station, it has been listed as our goal to catch up with foreign advanced level. It increases the vertical pitch angle (passive mode of work +36 ° ~ -52 °), which takes full advantage of the channel convergence and the sea floor reflection sound field, the working distance has been greatly improved. This measure has been called “sonar history of the more prominent achievements.” This paper tries to provide a theoretical basis for obtaining this “outstanding achievement” through the rough analysis and calculation of the deep-sea sound field so as to provide a reliable basis for selecting the pitch angle for underwater acoustic equipment design.