ZA722711B - Apparatus for determining the direction of propagation of a plane wave - Google Patents
Apparatus for determining the direction of propagation of a plane waveInfo
- Publication number
- ZA722711B ZA722711B ZA722711A ZA722711A ZA722711B ZA 722711 B ZA722711 B ZA 722711B ZA 722711 A ZA722711 A ZA 722711A ZA 722711 A ZA722711 A ZA 722711A ZA 722711 B ZA722711 B ZA 722711B
- Authority
- ZA
- South Africa
- Prior art keywords
- propagation
- determining
- plane wave
- wave
- plane
- Prior art date
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
-
- 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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio 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
- 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
- G01S3/8006—Multi-channel systems specially adapted for direction-finding, i.e. having a single aerial system capable of giving simultaneous indications of the directions of different signals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7114137A FR2134136B2 (xx) | 1971-04-21 | 1971-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA722711B true ZA722711B (en) | 1973-03-28 |
Family
ID=9075678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA722711A ZA722711B (en) | 1971-04-21 | 1972-04-21 | Apparatus for determining the direction of propagation of a plane wave |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3792479A (xx) |
| BE (1) | BE782192A (xx) |
| CA (1) | CA966926A (xx) |
| DE (1) | DE2219678C2 (xx) |
| ES (1) | ES401970A1 (xx) |
| FR (1) | FR2134136B2 (xx) |
| GB (1) | GB1377574A (xx) |
| IT (1) | IT954726B (xx) |
| NL (1) | NL7205372A (xx) |
| ZA (1) | ZA722711B (xx) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2243447B1 (xx) * | 1973-09-11 | 1976-06-18 | Cit Alcatel | |
| FR2294589A1 (fr) * | 1974-12-10 | 1976-07-09 | Cit Alcatel | Dispositif de formation de voies utilisant des detecteurs repartis sur une base circulaire |
| FR2294590A1 (fr) * | 1974-12-10 | 1976-07-09 | Cit Alcatel | Dispositif de formation de voies utilisant des detecteurs repartis sur une base circulaire |
| FR2315800A1 (fr) * | 1975-06-26 | 1977-01-21 | Cit Alcatel | Dispositif de formation de voies |
| GB2140238A (en) * | 1983-05-11 | 1984-11-21 | Racal Communications Equip | Direction finding |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3449711A (en) * | 1965-08-30 | 1969-06-10 | Magnavox Co | Beam former |
| FR2049666A5 (xx) * | 1969-06-16 | 1971-03-26 | Cit Alcatel |
-
1971
- 1971-04-21 FR FR7114137A patent/FR2134136B2/fr not_active Expired
-
1972
- 1972-04-17 BE BE782192A patent/BE782192A/xx not_active IP Right Cessation
- 1972-04-20 CA CA140,185A patent/CA966926A/en not_active Expired
- 1972-04-20 NL NL7205372A patent/NL7205372A/xx active Search and Examination
- 1972-04-20 IT IT68240/72A patent/IT954726B/it active
- 1972-04-21 ZA ZA722711A patent/ZA722711B/xx unknown
- 1972-04-21 DE DE2219678A patent/DE2219678C2/de not_active Expired
- 1972-04-21 ES ES401970A patent/ES401970A1/es not_active Expired
- 1972-04-21 US US00246414A patent/US3792479A/en not_active Expired - Lifetime
- 1972-04-21 GB GB1870872A patent/GB1377574A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1377574A (en) | 1974-12-18 |
| FR2134136A2 (xx) | 1972-12-08 |
| ES401970A1 (es) | 1975-11-01 |
| FR2134136B2 (xx) | 1974-04-05 |
| BE782192A (fr) | 1972-10-17 |
| DE2219678A1 (de) | 1972-11-02 |
| US3792479A (en) | 1974-02-12 |
| IT954726B (it) | 1973-09-15 |
| DE2219678C2 (de) | 1982-04-29 |
| CA966926A (en) | 1975-04-29 |
| NL7205372A (xx) | 1972-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5756719A (en) | Measuring apparatus | |
| GB1364977A (en) | Apparatus for mechanotherapy | |
| CA952233A (en) | Acoustic surface wave apparatus | |
| ZA725073B (en) | Transducers | |
| CA965491A (en) | Acoustic surface wave devices | |
| CA945679A (en) | Wave measuring apparatus | |
| AU461183B2 (en) | Acoustic surface wave devices | |
| GB1368868A (en) | Optical wave guides | |
| ZA722938B (en) | Vibrator apparatus | |
| CA966588A (en) | Acoustic surface wave devices | |
| CA972553A (en) | Fixing apparatus | |
| ZA722711B (en) | Apparatus for determining the direction of propagation of a plane wave | |
| CS186215B2 (en) | Device for the trensmission of signals | |
| ZA723942B (en) | A frequency synthesier device | |
| CA991394A (en) | Developing apparatus | |
| IT976159B (it) | Apparecchio e procedimento per il comando di un trasduttore | |
| ZA722240B (en) | Distance measuring apparatus | |
| ZA726449B (en) | Process for the polymerization of alpha-olefins | |
| ZA722670B (en) | Developing apparatus | |
| CA861674A (en) | Inspection apparatus | |
| ZA723062B (en) | Transducer | |
| CA884426A (en) | Ultrasonic testing apparatus | |
| CA879832A (en) | Ultrasonic testing apparatus | |
| ZA715936B (en) | Swinging device for pneumatic wave generators | |
| GB1343355A (en) | Travelling wave tubes |