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 PERSPECTIONSInfo
- 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
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)
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)
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 |
-
1972
- 1972-01-03 GB GB17572A patent/GB1360901A/en not_active Expired
- 1972-01-06 AU AU37664/72A patent/AU459096B2/en not_active Expired
- 1972-01-07 CA CA131,946A patent/CA950105A/en not_active Expired
- 1972-01-15 IT IT4776272A patent/IT949657B/en active
- 1972-01-25 NO NO17972A patent/NO133984C/no unknown
- 1972-01-27 NL NL7201109A patent/NL160656C/en not_active IP Right Cessation
- 1972-01-28 FR FR7202837A patent/FR2124285B1/fr not_active Expired
- 1972-01-28 DE DE19722204028 patent/DE2204028C3/en not_active Expired
- 1972-01-29 JP JP1092872A patent/JPS5328784B1/ja active Pending
- 1972-01-31 SE SE106172A patent/SE377385B/xx unknown
- 1972-01-31 BE BE778760A patent/BE778760A/en not_active IP Right Cessation
- 1972-01-31 ES ES399340A patent/ES399340A1/en not_active Expired
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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