IT949657B - SYSTEM FOR THE TRANSMISSION OF RADIANT ENERGY AT LOW FREQUENCY IN PARTICULAR FOR UNDERWATER DETECTION AND PERSPECTIONS - Google Patents

SYSTEM FOR THE TRANSMISSION OF RADIANT ENERGY AT LOW FREQUENCY IN PARTICULAR FOR UNDERWATER DETECTION AND PERSPECTIONS

Info

Publication number
IT949657B
IT949657B IT4776272A IT4776272A IT949657B IT 949657 B IT949657 B IT 949657B IT 4776272 A IT4776272 A IT 4776272A IT 4776272 A IT4776272 A IT 4776272A IT 949657 B IT949657 B IT 949657B
Authority
IT
Italy
Prior art keywords
perspections
transmission
low frequency
radiant energy
underwater detection
Prior art date
Application number
IT4776272A
Other languages
Italian (it)
Original Assignee
Raytheon Co
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 Raytheon Co filed Critical Raytheon Co
Application granted granted Critical
Publication of IT949657B publication Critical patent/IT949657B/en

Links

Classifications

    • 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G10K11/343—Circuits therefor using frequency variation or different frequencies
    • 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
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • 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
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Radio Transmission System (AREA)
  • Transmitters (AREA)
IT4776272A 1971-02-01 1972-01-15 SYSTEM FOR THE TRANSMISSION OF RADIANT ENERGY AT LOW FREQUENCY IN PARTICULAR FOR UNDERWATER DETECTION AND PERSPECTIONS IT949657B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11121871A 1971-02-01 1971-02-01

Publications (1)

Publication Number Publication Date
IT949657B true IT949657B (en) 1973-06-11

Family

ID=22337233

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4776272A IT949657B (en) 1971-02-01 1972-01-15 SYSTEM FOR THE TRANSMISSION OF RADIANT ENERGY AT LOW FREQUENCY IN PARTICULAR FOR UNDERWATER DETECTION AND PERSPECTIONS

Country Status (12)

Country Link
JP (1) JPS5328784B1 (en)
AU (1) AU459096B2 (en)
BE (1) BE778760A (en)
CA (1) CA950105A (en)
DE (1) DE2204028C3 (en)
ES (1) ES399340A1 (en)
FR (1) FR2124285B1 (en)
GB (1) GB1360901A (en)
IT (1) IT949657B (en)
NL (1) NL160656C (en)
NO (1) NO133984C (en)
SE (1) SE377385B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385271A1 (en) * 1977-03-25 1978-10-20 Thomson Csf REMOTE TRANSMISSION OF INFORMATION DEVICE, ESPECIALLY FOR REMOTE GUIDANCE SYSTEMS FOR VEHICLES SUBJECT TO HIGH ACCELERATIONS, AND REMOTE GUIDANCE SYSTEM INCLUDING SUCH A DEVICE
FR2431137A2 (en) * 1977-12-20 1980-02-08 Inst Francais Du Petrole SONAR FOR OBTAINING A TOPOGRAPHIC REPRESENTATION OF AN UNDERWATER SURFACE AND THE UNDERLYING LAYERS
FR2589248B1 (en) * 1978-02-17 1988-01-22 Thomson Csf IMPROVEMENT OF ACOUSTIC SELF-GUIDING SYSTEMS OF UNDERWATER VEHICLES
FR2441180A1 (en) * 1978-11-10 1980-06-06 Thomson Csf DOPPLER CURRENTOMETER FOR LARGE FUNDS
JPS55114980A (en) * 1979-02-28 1980-09-04 Sumitomo Metal Mining Co Ltd Inspection method for massive object on sea bottom and its unit
DE2920330C2 (en) * 1979-05-19 1987-01-02 Fried. Krupp Gmbh, 4300 Essen Depth sounder with two transmission frequencies
WO1981000456A1 (en) * 1979-07-30 1981-02-19 Dorian Ind Pty Ltd Method and device for measuring distances
FR2538124B1 (en) * 1982-12-17 1986-02-07 Thomson Csf ACOUSTIC SYSTEM WITH MULTI-BEAM PARAMETRIC ANTENNAS
GB8405099D0 (en) * 1984-02-28 1984-04-04 Donnelly K Hydrographic survey module
DE3416246C1 (en) * 1984-05-02 1985-10-24 Ski-Data Computer-Handelsgesellschaft mbH, St. Leonhard, Grödig Device for controlling the movements of the grading tools of snow groomer vehicles
FR2594233A1 (en) * 1986-02-07 1987-08-14 Morand Christian Device for analysis and colour display of objects possibly masked by a screen

Also Published As

Publication number Publication date
NO133984B (en) 1976-04-20
DE2204028B2 (en) 1973-11-08
AU459096B2 (en) 1975-03-20
ES399340A1 (en) 1975-06-01
GB1360901A (en) 1974-07-24
CA950105A (en) 1974-06-25
DE2204028C3 (en) 1974-06-12
NL160656B (en) 1979-06-15
NL7201109A (en) 1972-08-03
SE377385B (en) 1975-06-30
FR2124285A1 (en) 1972-09-22
DE2204028A1 (en) 1972-08-10
JPS5328784B1 (en) 1978-08-16
BE778760A (en) 1972-05-16
AU3766472A (en) 1973-07-12
NL160656C (en) 1979-11-15
FR2124285B1 (en) 1977-04-01
NO133984C (en) 1976-07-28

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