公开(公告)号：US3448432A

公开(公告)日：1969-06-03

申请号：US3448432D

申请日：1967-11-02

Applicant: US NAVY

Inventor： WATLINGTON FRANCIS W

IPC: G01V1/38 ,  H04B13/02

CPC classification number: G01V1/38

公开(公告)号：US3860899A

公开(公告)日：1975-01-14

申请号：US76638268

申请日：1968-10-08

Applicant: US NAVY

Inventor： WATLINGTON FRANCIS W

IPC: G01S1/72 ,  G01V1/20 ,  G01S7/66

CPC classification number: G01V1/201 ,  G01S1/72 ,  Y10S367/901

Abstract: A device for reducing noise in a towed hydrophone system caused by cable strum is provided by producing a signal that is proportional to the strum signal but is uninfluenced by the acoustic signal. A geophone, an accelerometer or a strain gauge may be suitably positioned to be sensitive only to the distortion caused by cable strum. The strum signal thus detected is introduced in opposition to the combined acoustic and strum signal received by the hydrophone so that strum noise in the acoustic signal is erased or substantially deleted.

Abstract translation: 通过产生与弦声信号成比例但不受音响信号影响的信号来提供用于减少由电缆平台引起的拖曳水听器系统中的噪声的装置。 地理检波器，加速度计或应变仪可以适当地定位成仅对由电缆平台引起的变形敏感。 如此检测到的弦乐信号与由水听器接收的组合声和弦信号相对应地引入，使得声信号中的声音噪声被擦除或基本上被删除。

公开(公告)号：US3493902A

公开(公告)日：1970-02-03

申请号：US3493902D

申请日：1968-07-19

Applicant: US NAVY

Inventor： WATLINGTON FRANCIS W

IPC: G01V1/20 ,  G01V1/38 ,  H01H36/00 ,  H01H9/00 ,  H01H45/00

CPC classification number: G01V1/38 ,  G01V1/201 ,  H01H36/006