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    Quantitative echo sounder and method of quantitative sounding of fish
    1.
    发明授权
    Quantitative echo sounder and method of quantitative sounding of fish 有权
    定量回声测深仪和鱼类定量测深法

    公开(公告)号：US07193930B2

    公开(公告)日：2007-03-20

    申请号：US11099574

    申请日：2005-04-06

    申请人： Takanori Satoh ,  Osamu Kubota ,  Katsuhisa Yamamoto ,  Satoshi Misonoo ,  Youhei Kinoshita ,  Yuriko Onishi ,  Hiroyuki Toda

    发明人： Takanori Satoh ,  Osamu Kubota ,  Katsuhisa Yamamoto ,  Satoshi Misonoo ,  Youhei Kinoshita ,  Yuriko Onishi ,  Hiroyuki Toda

    IPC分类号： G01S15/96

    CPC分类号： G01S7/521 ,  G01S7/539 ,  G01S15/42 ,  G01S15/96 ,  G10K11/346

    摘要： A quantitative echo sounder includes delay circuits, phase correction circuits, an incidence angle calculator and a directivity correction unit. The delay circuits adjust transmission start timing or phases of acoustic waves radiated by individual vibrating elements based on pitch and roll angles measured by a motion sensing device so that the direction of an acoustic axis of a transmitting beam matches a sounding direction. The phase correction circuits adjust phases of received echo signals based on the pitch and roll angles so that the direction of an acoustic axis of a receiving beam matches the sounding direction. The incidence angle calculator calculates echo signal incidence angle with respect to the sounding direction from phase differences among receiving beam signals obtained by four vibrating element groups. The directivity correction unit corrects a measured target strength by using the echo signal incidence angle calculated by the incidence angle calculator.

    摘要翻译： 定量回声测深仪包括延迟电路，相位校正电路，入射角计算器和指向性校正单元。 延迟电路基于由运动感测装置测量的俯仰角和滚动角度来调整由各个振动元件辐射的声波的传输开始时刻或相位，使得发射波束的声轴方向与发声方向匹配。 相位校正电路基于俯仰角和倾斜角调节接收的回波信号的相位，使得接收波束的声轴的方向与探测方向一致。 入射角计算器根据由四个振动元件组获得的接收光束信号之间的相位差来计算相对于探测方向的回波信号入射角。 指向性校正单元通过使用由入射角计算器计算的回波信号入射角来校正测量的目标强度。

    Quantitative echo souner and method of quantitative sounding of fish
    2.
    发明申请
    Quantitative echo souner and method of quantitative sounding of fish 有权
    鱼类定量回声定量检测方法

    公开(公告)号：US20050226099A1

    公开(公告)日：2005-10-13

    申请号：US11099574

    申请日：2005-04-06

    申请人： Takanori Satoh ,  Osamu Kubota ,  Katsuhisa Yamamoto ,  Satoshi Misonoo ,  Youhei Kinoshita ,  Yuriko Onishi ,  Hiroyuki Toda

    发明人： Takanori Satoh ,  Osamu Kubota ,  Katsuhisa Yamamoto ,  Satoshi Misonoo ,  Youhei Kinoshita ,  Yuriko Onishi ,  Hiroyuki Toda

    IPC分类号： G01S7/521 ,  G01S7/523 ,  G01S7/539 ,  G01S15/00 ,  G01S15/42 ,  G01S15/96 ,  G10K11/34

    CPC分类号： G01S7/521 ,  G01S7/539 ,  G01S15/42 ,  G01S15/96 ,  G10K11/346

    摘要： A quantitative echo sounder includes delay circuits, phase correction circuits, an incidence angle calculator and a directivity correction unit. The delay circuits adjust transmission start timing or phases of acoustic waves radiated by individual vibrating elements based on pitch and roll angles measured by a motion sensing device so that the direction of an acoustic axis of a transmitting beam matches a sounding direction. The phase correction circuits adjust phases of received echo signals based on the pitch and roll angles so that the direction of an acoustic axis of a receiving beam matches the sounding direction. The incidence angle calculator calculates echo signal incidence angle with respect to the sounding direction from phase differences among receiving beam signals obtained by four vibrating element groups. The directivity correction unit corrects a measured target strength by using the echo signal incidence angle calculated by the incidence angle calculator.

    摘要翻译： 定量回声测深仪包括延迟电路，相位校正电路，入射角计算器和指向性校正单元。 延迟电路基于由运动感测装置测量的俯仰角和滚动角度来调整由各个振动元件辐射的声波的传输开始时刻或相位，使得发射波束的声轴方向与发声方向匹配。 相位校正电路基于俯仰角和倾斜角调节接收的回波信号的相位，使得接收波束的声轴的方向与探测方向一致。 入射角计算器根据由四个振动元件组获得的接收光束信号之间的相位差来计算相对于探测方向的回波信号入射角。 指向性校正单元通过使用由入射角计算器计算的回波信号入射角来校正测量的目标强度。