BE478026A - - Google Patents
Info
- Publication number
- BE478026A BE478026A BE478026DA BE478026A BE 478026 A BE478026 A BE 478026A BE 478026D A BE478026D A BE 478026DA BE 478026 A BE478026 A BE 478026A
- 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
- G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
- G01S3/48—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
-
- 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
- G01S3/02—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
- G01S3/16—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2028/44A GB586139A (en) | 1944-02-03 | 1944-02-03 | Improvements in electric wave modulating devices and electronic switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE478026A true BE478026A (enrdf_load_html_response) |
Family
ID=9732341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE478026D BE478026A (enrdf_load_html_response) | 1944-02-03 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2485578A (enrdf_load_html_response) |
| BE (1) | BE478026A (enrdf_load_html_response) |
| FR (1) | FR939342A (enrdf_load_html_response) |
| GB (1) | GB586139A (enrdf_load_html_response) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3020548A (en) * | 1958-05-19 | 1962-02-06 | Allen Bradford Inc | Portable radio direction finder |
| US4152703A (en) * | 1976-09-01 | 1979-05-01 | Dan-Mar Co. | Homing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1868945A (en) * | 1930-11-25 | 1932-07-26 | Bendix Aviat Corp | Radio direction finder |
| US2397128A (en) * | 1944-09-13 | 1946-03-26 | Us Government | Radio adapter unit |
-
0
- BE BE478026D patent/BE478026A/xx unknown
-
1944
- 1944-02-03 GB GB2028/44A patent/GB586139A/en not_active Expired
-
1945
- 1945-03-22 US US584150A patent/US2485578A/en not_active Expired - Lifetime
-
1946
- 1946-09-07 FR FR939342D patent/FR939342A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2485578A (en) | 1949-10-25 |
| FR939342A (fr) | 1948-11-10 |
| GB586139A (en) | 1947-03-07 |