NO970678L - Lineær akustisk antenne med apparat for entydig retningsbestemmelse - Google Patents
Lineær akustisk antenne med apparat for entydig retningsbestemmelseInfo
- Publication number
- NO970678L NO970678L NO970678A NO970678A NO970678L NO 970678 L NO970678 L NO 970678L NO 970678 A NO970678 A NO 970678A NO 970678 A NO970678 A NO 970678A NO 970678 L NO970678 L NO 970678L
- Authority
- NO
- Norway
- Prior art keywords
- antenna
- hydrophones
- linear acoustic
- acoustic antenna
- directional determination
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Multimedia (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Lineær akustisk antenne (10) med en rekke hydrofoner (H^ - H¿) og beregnet for nedføring av en undervannsbåt eller et overflatefartøy. Antennen (10) omfatter en hoveddel med N hydrofoner (Hj - H¿) med omnidirek- sjonell karakteristikk, og en tilleggsdel A med to hydrofoner AG, AD med retnings- karakteristikk som en kardioide. Tilleggs- delen A brukes for å utelukke tvetydighet ved retningsbestemmelse (høyre/venstre). I en beregningskrets (34) beregnes kohe- rens mellom de signaler som kommer inn til hoveddelen, og to signaler D(t) og G(t) for hhv en høyre og en venstre kanal, mottatt av tilleggsdelen A, og ved en sanunenlikning mellom koherensverdiene finner man den største og kan derved slutte seg til hvilken side en kilde (22) ligger på i forhold til antennens midtakse (12). Anvendelse særlig for slepeantenner.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9601844A FR2745145B1 (fr) | 1996-02-15 | 1996-02-15 | Antenne lineaire acoustique avec dispositif de levee d'ambiguite |
Publications (2)
Publication Number | Publication Date |
---|---|
NO970678D0 NO970678D0 (no) | 1997-02-14 |
NO970678L true NO970678L (no) | 1997-08-18 |
Family
ID=9489209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO970678A NO970678L (no) | 1996-02-15 | 1997-02-14 | Lineær akustisk antenne med apparat for entydig retningsbestemmelse |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0790506B1 (no) |
AU (1) | AU1472897A (no) |
CA (1) | CA2197703A1 (no) |
DE (1) | DE69705136T2 (no) |
ES (1) | ES2158456T3 (no) |
FR (1) | FR2745145B1 (no) |
NO (1) | NO970678L (no) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10237761A1 (de) * | 2002-08-17 | 2004-03-04 | Stn Atlas Elektronik Gmbh | Verfahren zur Schätzung der Antennengeometrie einer akustischen Linearantenne |
FR2862439B1 (fr) * | 2003-11-17 | 2006-02-10 | Jean Marc Cortambert | Antenne cruciforme a sous-antennes lineaires et traitement associe |
FR2909457B1 (fr) * | 2006-12-01 | 2009-01-23 | Thales Sa | Procede d'elimination de sources fantomes pour un sonar passif comportant plusieurs antennes lineaires. |
US20140152503A1 (en) * | 2012-12-03 | 2014-06-05 | Qualcomm Incorporated | Direction of arrival estimation using linear array |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4129874A (en) * | 1977-09-19 | 1978-12-12 | The United States Of America As Represented By The Field Operations Bureau Of The Federal Communications Commission | Antenna pattern combiner |
US4187490A (en) * | 1978-08-03 | 1980-02-05 | Sanders Associates, Inc. | Range determining system |
DE3537759A1 (de) * | 1985-10-24 | 1987-04-30 | Krupp Gmbh | Verfahren zum eliminieren der richtungszweideutigkeit von linearantennen |
FR2685848B1 (fr) * | 1991-12-26 | 1994-02-25 | Thomson Csf | Antenne acoustique lineaire. |
-
1996
- 1996-02-15 FR FR9601844A patent/FR2745145B1/fr not_active Expired - Fee Related
-
1997
- 1997-01-30 EP EP19970400212 patent/EP0790506B1/fr not_active Expired - Lifetime
- 1997-01-30 ES ES97400212T patent/ES2158456T3/es not_active Expired - Lifetime
- 1997-01-30 DE DE1997605136 patent/DE69705136T2/de not_active Expired - Lifetime
- 1997-02-14 CA CA 2197703 patent/CA2197703A1/fr not_active Abandoned
- 1997-02-14 NO NO970678A patent/NO970678L/no unknown
- 1997-02-14 AU AU14728/97A patent/AU1472897A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
NO970678D0 (no) | 1997-02-14 |
FR2745145A1 (fr) | 1997-08-22 |
AU1472897A (en) | 1997-08-21 |
DE69705136T2 (de) | 2002-03-07 |
ES2158456T3 (es) | 2001-09-01 |
EP0790506A1 (fr) | 1997-08-20 |
DE69705136D1 (de) | 2001-07-19 |
EP0790506B1 (fr) | 2001-06-13 |
FR2745145B1 (fr) | 1998-06-12 |
CA2197703A1 (fr) | 1997-08-16 |
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