GB1241663A - Improvements in or relating to echo sounders - Google Patents

Improvements in or relating to echo sounders

Info

Publication number
GB1241663A
GB1241663A GB474368A GB474368A GB1241663A GB 1241663 A GB1241663 A GB 1241663A GB 474368 A GB474368 A GB 474368A GB 474368 A GB474368 A GB 474368A GB 1241663 A GB1241663 A GB 1241663A
Authority
GB
United Kingdom
Prior art keywords
echo
power
ramp
voltage
soundings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB474368A
Inventor
Roy Patrick Tingay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconi Sounding Device Co Ltd
Original Assignee
Marconi Sounding Device Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marconi Sounding Device Co Ltd filed Critical Marconi Sounding Device Co Ltd
Priority to GB474368A priority Critical patent/GB1241663A/en
Publication of GB1241663A publication Critical patent/GB1241663A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/523—Details of pulse systems
    • G01S7/524—Transmitters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

1,241,663. Echo-sounding. MARCONI SOUNDING DEVICE CO. Ltd. 13 Nov., 1968 [30 Jan., 1968], No. 4743/68. Heading H4D. To reduce disturbing effects of reverberation when an echo-sounder is used in shallow water the transmitted acoustic power is controlled automatically in dependence on the water depth so that the power is lower for shallow soundings than for deep soundings. In a preferred embodiment a ramp-voltage generator is triggered at the acoustic pulse transmission instant and a gate is opened by the corresponding sea bottom echo to sample the ramp voltage. The sample voltage is applied via an amplifying and integrating stage to control the gain of a power amplifier which provides drive pulses for a transmitting/ receiving transducer. Echo signals are fed to a chart recorder which may also be used to trigger the ramp-voltage generator. The transmitted power may be controlled in dependence on the strength of received bottom echoes instead of on their occurrence time, and the power variation may be stepped instead of continuous.
GB474368A 1968-01-30 1968-01-30 Improvements in or relating to echo sounders Expired GB1241663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB474368A GB1241663A (en) 1968-01-30 1968-01-30 Improvements in or relating to echo sounders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB474368A GB1241663A (en) 1968-01-30 1968-01-30 Improvements in or relating to echo sounders

Publications (1)

Publication Number Publication Date
GB1241663A true GB1241663A (en) 1971-08-04

Family

ID=9782944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB474368A Expired GB1241663A (en) 1968-01-30 1968-01-30 Improvements in or relating to echo sounders

Country Status (1)

Country Link
GB (1) GB1241663A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985030A (en) * 1974-10-29 1976-10-12 William Mcgeoch & Company Ultrasonic acoustic pulse echo ranging system
EP0152895A2 (en) * 1984-02-18 1985-08-28 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Circuit for an ultrasonic range finder
DE3513270A1 (en) * 1985-04-13 1986-10-23 Swf Auto Electric Gmbh Device for distance measurement, in particular for motor vehicles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985030A (en) * 1974-10-29 1976-10-12 William Mcgeoch & Company Ultrasonic acoustic pulse echo ranging system
EP0152895A2 (en) * 1984-02-18 1985-08-28 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Circuit for an ultrasonic range finder
EP0152895A3 (en) * 1984-02-18 1986-12-30 Bayerische Motoren Werke Aktiengesellschaft Circuit for an ultrasonic range finder
DE3513270A1 (en) * 1985-04-13 1986-10-23 Swf Auto Electric Gmbh Device for distance measurement, in particular for motor vehicles

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