FR2663489B1 - METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS. - Google Patents
METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS.Info
- Publication number
- FR2663489B1 FR2663489B1 FR9007512A FR9007512A FR2663489B1 FR 2663489 B1 FR2663489 B1 FR 2663489B1 FR 9007512 A FR9007512 A FR 9007512A FR 9007512 A FR9007512 A FR 9007512A FR 2663489 B1 FR2663489 B1 FR 2663489B1
- Authority
- FR
- France
- Prior art keywords
- low frequency
- frequency signals
- acoustic detection
- acoustic
- detection
- 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 - Lifetime
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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
- G01S3/802—Systems for determining direction or deviation from predetermined direction
- G01S3/803—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from receiving transducers or transducer systems having differently-oriented directivity characteristics
-
- 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
- G01S3/86—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves with means for eliminating undesired waves, e.g. disturbing noises
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9007512A FR2663489B1 (en) | 1990-06-15 | 1990-06-15 | METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS. |
PCT/FR1991/000443 WO1991019996A1 (en) | 1990-06-15 | 1991-06-04 | Low-frequency signal acoustic detection method |
AU79643/91A AU7964391A (en) | 1990-06-15 | 1991-06-04 | Low-frequency signal acoustic detection method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9007512A FR2663489B1 (en) | 1990-06-15 | 1990-06-15 | METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2663489A1 FR2663489A1 (en) | 1991-12-20 |
FR2663489B1 true FR2663489B1 (en) | 1992-09-11 |
Family
ID=9397670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9007512A Expired - Lifetime FR2663489B1 (en) | 1990-06-15 | 1990-06-15 | METHOD FOR ACOUSTIC DETECTION OF LOW FREQUENCY SIGNALS. |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU7964391A (en) |
FR (1) | FR2663489B1 (en) |
WO (1) | WO1991019996A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2533323C1 (en) * | 2013-03-21 | 2014-11-20 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) | Vector receiving device |
RU2569201C1 (en) * | 2014-06-27 | 2015-11-20 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) | Combined hydroacoustic receiver |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2452115B1 (en) * | 1979-03-23 | 1985-10-18 | Sperry Corp | ULTRASONIC RADAR DETECTION ASSEMBLY |
US4283767A (en) * | 1979-05-03 | 1981-08-11 | Raytheon Company | Multiple correlator reference processor |
JPS57124267A (en) * | 1981-01-26 | 1982-08-03 | Oki Electric Ind Co Ltd | Elimination system for noise of sonar |
JPS59174723A (en) * | 1983-03-25 | 1984-10-03 | Fujitsu Ltd | Sound monitoring device |
FR2615682B1 (en) * | 1987-05-19 | 1989-07-13 | Thomson Csf | GEOPHONE COMPRISING A SENSITIVE ELEMENT IN PIEZOELECTRIC POLYMER |
-
1990
- 1990-06-15 FR FR9007512A patent/FR2663489B1/en not_active Expired - Lifetime
-
1991
- 1991-06-04 AU AU79643/91A patent/AU7964391A/en not_active Abandoned
- 1991-06-04 WO PCT/FR1991/000443 patent/WO1991019996A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2663489A1 (en) | 1991-12-20 |
AU7964391A (en) | 1992-01-07 |
WO1991019996A1 (en) | 1991-12-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |