GB987230A - Improvements in or relating to methods and apparatus for echo sounding with submarine sounds - Google Patents

Improvements in or relating to methods and apparatus for echo sounding with submarine sounds

Info

Publication number
GB987230A
GB987230A GB2410861A GB2410861A GB987230A GB 987230 A GB987230 A GB 987230A GB 2410861 A GB2410861 A GB 2410861A GB 2410861 A GB2410861 A GB 2410861A GB 987230 A GB987230 A GB 987230A
Authority
GB
United Kingdom
Prior art keywords
housing
echo
energized
frequency
sounding
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
GB2410861A
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.)
ELAC Electroacustic GmbH
Original Assignee
ELAC Electroacustic GmbH
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 ELAC Electroacustic GmbH filed Critical ELAC Electroacustic GmbH
Publication of GB987230A publication Critical patent/GB987230A/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/96—Sonar systems specially adapted for specific applications for locating fish
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
    • G10K11/006—Transducer mounting in underwater equipment, e.g. sonobuoys

Landscapes

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

Abstract

987,230. Recording-apparatus. ELECTROACUSTIC G.m.b.H. July 4, 1961 [July 4, 1960], No.24108/61. Heading G1J. [Also in Divisions G4 and H4] A sound pulse received from remote subaqueous sounding apparatus initiates the time base of an indicator. A water-tight housing 3 carried on a trawl net 2 encloses upwardly and downwardly transmitting/receiving transducers 9, 10 pulsed from a triggering source 14. The echo pulses are demodulated and remodulated on to frequencies # 4 , # 5 , and the triggering pulses modulate a frequency f 3 ; these sound transmissions are received on trawler 1 by transducers 8 which may be directed in azimuth and elevation. The apparatus in housing 3 is powered by an accumulator 24 charged from a generator 25 itself driven by propeller 27. On the trawler electro-chemical or spark discharge recorder stylusses 41, 43, Fig.6 are energized by rectified pulses from receiving transducers 31 (# 4 ) and 30 (# 5 ) respectively; they are carried by a band 39 driven from a motor 36 via an electromagnetic clutch 35 which is energized, by a thyratron 33 when the latter is fired by the triggering pulse received on frequency # 3 by transducer 29, and which is de-energized by camoperated switch 37. During each pulse-echo sounding period the stylusses move in opposite directions from the centre to the edges of the recording strip and then spring back to their initial positions. In a modified circuit arrangement for the transmissions from housing 3, demodulation is avoided by frequency-changing, Figs. 4 and 5 (neither shown). Cathode-ray tube displays may be provided. The housing 3 may have surfaces so controlled by servo-mechanisms fed with the echo-sounding results that it remains a fixed distance from the surface, or bed, of the sea; the circuits in the housing may be transistorised. The housing may be anchored to the sea bed, or be suspended from an anchored buoy, or be a self-propelled buoyant device.
GB2410861A 1960-07-04 1961-07-04 Improvements in or relating to methods and apparatus for echo sounding with submarine sounds Expired GB987230A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1960E0019564 DE1261785B (en) 1960-07-04 1960-07-04 Method and device for echo sounding with underwater sound

Publications (1)

Publication Number Publication Date
GB987230A true GB987230A (en) 1965-03-24

Family

ID=7070043

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2410861A Expired GB987230A (en) 1960-07-04 1961-07-04 Improvements in or relating to methods and apparatus for echo sounding with submarine sounds

Country Status (2)

Country Link
DE (1) DE1261785B (en)
GB (1) GB987230A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523276A (en) * 1967-08-02 1970-08-04 Krupp Gmbh Echo sounder system
GB2277182A (en) * 1993-04-16 1994-10-19 Elliot Joseph Gray Sea-going vessel warning system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1029713B (en) * 1954-02-23 1958-05-08 Electroacustic Gmbh Device for the detection of objects under water, such. B. schools of fish, obstacles, etc. with the help of underwater sound

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523276A (en) * 1967-08-02 1970-08-04 Krupp Gmbh Echo sounder system
GB2277182A (en) * 1993-04-16 1994-10-19 Elliot Joseph Gray Sea-going vessel warning system
GB2277182B (en) * 1993-04-16 1997-04-23 Elliot Joseph Gray Sea-going vessel warning system

Also Published As

Publication number Publication date
DE1261785B (en) 1968-02-22

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