BE621855A - - Google Patents
Info
- Publication number
- BE621855A BE621855A BE621855DA BE621855A BE 621855 A BE621855 A BE 621855A BE 621855D A BE621855D A BE 621855DA BE 621855 A BE621855 A BE 621855A
- Authority
- BE
- Belgium
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
- G01S3/02—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 radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/52—Systems for determining direction or deviation from predetermined direction using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB31222/61A GB991365A (en) | 1961-08-30 | 1961-08-30 | Radio direction finding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE621855A true BE621855A (fr) |
Family
ID=10319862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE621855D BE621855A (fr) | 1961-08-30 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3149334A (fr) |
| BE (1) | BE621855A (fr) |
| CH (1) | CH417702A (fr) |
| FR (1) | FR1340251A (fr) |
| GB (2) | GB991365A (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2269086B1 (fr) * | 1974-04-26 | 1980-01-04 | Onera (Off Nat Aerospatiale) | |
| US4644358A (en) * | 1982-11-13 | 1987-02-17 | Nihon Musen Kabushiki Kaisha | Stem orientation measurement apparatus |
| US5099248A (en) * | 1991-03-15 | 1992-03-24 | Lockheed Sanders, Inc. | Transmission signal direction finding apparatus and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2481509A (en) * | 1945-09-05 | 1949-09-13 | Paul G Hansel | Directional system |
| GB758139A (en) * | 1954-05-21 | 1956-09-26 | Standard Telephones Cables Ltd | Radio direction finding system |
-
0
- BE BE621855D patent/BE621855A/xx unknown
-
1961
- 1961-08-30 GB GB31222/61A patent/GB991365A/en not_active Expired
- 1961-09-01 GB GB31549/61A patent/GB991366A/en not_active Expired
-
1962
- 1962-07-11 US US208986A patent/US3149334A/en not_active Expired - Lifetime
- 1962-08-08 CH CH946762A patent/CH417702A/de unknown
- 1962-08-29 FR FR908088A patent/FR1340251A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB991366A (en) | 1965-05-05 |
| US3149334A (en) | 1964-09-15 |
| GB991365A (en) | 1965-05-05 |
| CH417702A (de) | 1966-07-31 |
| FR1340251A (fr) | 1963-10-18 |