Systems and methods for detection and analysis of amplitude modulation of underwater sound
    1.
    发明授权
    Systems and methods for detection and analysis of amplitude modulation of underwater sound 有权
    水下声振幅调制检测与分析系统及方法

    公开(公告)号:US07773458B2

    公开(公告)日:2010-08-10

    申请号:US12040123

    申请日:2008-02-29

    IPC分类号: G01S3/808

    CPC分类号: G01S3/8083 G01S7/52001

    摘要: Systems and methods for detection and analysis of amplitude modulation of underwater sound employ a product of a time delayed first electrical signal with a second electrical signal to generate a summed-product signal. The time delayed first electrical signal and the second electrical signal have an amplitude modulation indicative of characteristics of a vessel propeller. The summed-product signal is analyzed to detect a vessel and to determine the characteristics of the vessel propeller. In some arrangements a plurality of summed-product signals are analyzed to also determine a depth of the detected vessel.

    摘要翻译: 用于水下声音的幅度调制的检测和分析的系统和方法采用时间延迟的第一电信号与第二电信号的乘积,以产生相加产物信号。 时间延迟的第一电信号和第二电信号具有指示容器螺旋桨的特性的幅度调制。 分析总和产品信号以检测容器并确定容器螺旋桨的特性。 在一些布置中,分析多个相加产品信号以确定检测到的容器的深度。