公开(公告)号：NO328954B1

公开(公告)日：2010-06-28

申请号：NO982698

申请日：1998-06-11

Applicant: INPUT OUTPUT INC

Inventor： RAGAN BRYANT G ,  CRONVICH JAMES T ,  OLIVIER ANDRE W

IPC: G01V1/38 ,  B63B21/66 ,  G01V1/16

Abstract: A depth control device 100 for an underwater cable 10 includes a rotary actuator 171 having a rotating output shaft connected to a swash plate 190. Rotation of the swash plate 190 by the actuator 171 causes a rocker arm 220 to pivot about an axis transverse to the axis of the output shaft. The rocker arm 220 is drivingly connected to a drive shaft 145 for rotating wings 140 about their pitch axes. The pitch axes of the wings 140 can be perpendicular to and intersecting the axis of the actuator output shaft, enabling the depth control device 100 to be extremely compact.

公开(公告)号：NO315487B1

公开(公告)日：2003-09-08

申请号：NO943308

申请日：1994-09-07

Applicant: INPUT OUTPUT INC

Inventor： WILLIAMS ROSS E ,  RAGAN BRYANT G ,  KEMP JR ROBERT H

IPC: G01S5/30 ,  G01S7/292 ,  G01S7/52 ,  G01S7/527 ,  G01S11/14 ,  G01S13/18 ,  G01S15/18 ,  G01S15/87 ,  G01V1/36 ,  G01V1/38

Abstract: The underwater acoustic signal tracking appts. synchronises the tracking appts. to a synchronising event. A transducer converts underwater acoustic energy into electrical energy. A receiver connected to the transducer extracts pulse signals from the electrical energy. The pulse signals represent individual acoustic pulses having predetermined characteristics propagated underwater in response to the synchronising event. The receiver is enabled during an adjustable time window relative to the synchronising event. A pulse detector is connected to the receiver and has an adjustable detection threshold characteristic varying within the time window. The pulse detector selects a maximum pulse signal whose amplitude exceeds the detection threshold characteristic according to a predetermined criterion during the time window. A time of reception is assigned relative to the associated synchronising event to the maximum pulse signal. The detection threshold characteristic of the pulse detector is adjusted as a function of the time of reception of the maximum pulse signal.

公开(公告)号：AU740881B2

公开(公告)日：2001-11-15

申请号：AU6999798

申请日：1998-06-09

Applicant: INPUT OUTPUT INC

Inventor： OLIVIER ANDRE W ,  RAGAN BRYANT G ,  CRONVICH JAMES T

IPC: B63B21/66 ,  G01V1/38 ,  G05D1/04

Abstract: A depth control device 100 for an underwater cable 10 includes a rotary actuator 171 having a rotating output shaft connected to a swash plate 190. Rotation of the swash plate 190 by the actuator 171 causes a rocker arm 220 to pivot about an axis transverse to the axis of the output shaft. The rocker arm 220 is drivingly connected to a drive shaft 145 for rotating wings 140 about their pitch axes. The pitch axes of the wings 140 can be perpendicular to and intersecting the axis of the actuator output shaft, enabling the depth control device 100 to be extremely compact.

公开(公告)号：DE69426849T2

公开(公告)日：2001-07-26

申请号：DE69426849

申请日：1994-08-17

Applicant: INPUT OUTPUT INC

Inventor： WILLIAMS ROSS E ,  RAGAN BRYANT G ,  KEMP JR ROBERT H

IPC: G01S5/30 ,  G01S7/292 ,  G01S7/52 ,  G01S7/527 ,  G01S11/14 ,  G01S13/18 ,  G01S15/18 ,  G01S15/87 ,  G01V1/36 ,  G01V1/38

Abstract: The underwater acoustic signal tracking appts. synchronises the tracking appts. to a synchronising event. A transducer converts underwater acoustic energy into electrical energy. A receiver connected to the transducer extracts pulse signals from the electrical energy. The pulse signals represent individual acoustic pulses having predetermined characteristics propagated underwater in response to the synchronising event. The receiver is enabled during an adjustable time window relative to the synchronising event. A pulse detector is connected to the receiver and has an adjustable detection threshold characteristic varying within the time window. The pulse detector selects a maximum pulse signal whose amplitude exceeds the detection threshold characteristic according to a predetermined criterion during the time window. A time of reception is assigned relative to the associated synchronising event to the maximum pulse signal. The detection threshold characteristic of the pulse detector is adjusted as a function of the time of reception of the maximum pulse signal.

公开(公告)号：DE69426849D1

公开(公告)日：2001-04-19

申请号：DE69426849

申请日：1994-08-17

Applicant: INPUT OUTPUT INC

Inventor： WILLIAMS ROSS E ,  RAGAN BRYANT G ,  KEMP JR ROBERT H

IPC: G01S5/30 ,  G01S7/292 ,  G01S7/52 ,  G01S7/527 ,  G01S11/14 ,  G01S13/18 ,  G01S15/18 ,  G01S15/87 ,  G01V1/36 ,  G01V1/38

Abstract: The underwater acoustic signal tracking appts. synchronises the tracking appts. to a synchronising event. A transducer converts underwater acoustic energy into electrical energy. A receiver connected to the transducer extracts pulse signals from the electrical energy. The pulse signals represent individual acoustic pulses having predetermined characteristics propagated underwater in response to the synchronising event. The receiver is enabled during an adjustable time window relative to the synchronising event. A pulse detector is connected to the receiver and has an adjustable detection threshold characteristic varying within the time window. The pulse detector selects a maximum pulse signal whose amplitude exceeds the detection threshold characteristic according to a predetermined criterion during the time window. A time of reception is assigned relative to the associated synchronising event to the maximum pulse signal. The detection threshold characteristic of the pulse detector is adjusted as a function of the time of reception of the maximum pulse signal.