NL50753C - - Google Patents
Info
- Publication number
- NL50753C NL50753C NL88711A NL88711A NL50753C NL 50753 C NL50753 C NL 50753C NL 88711 A NL88711 A NL 88711A NL 88711 A NL88711 A NL 88711A NL 50753 C NL50753 C NL 50753C
- Authority
- NL
- Netherlands
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
- G01S3/04—Details
- G01S3/06—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna
-
- 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
- G01S3/04—Details
- G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Waveguide Aerials (AREA)
- Noise Elimination (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE207544X | 1937-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL50753C true NL50753C (xx) | 1941-08-15 |
Family
ID=5793777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL88711A NL50753C (xx) | 1937-07-10 | 1938-07-06 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2213281A (xx) |
| CH (1) | CH207544A (xx) |
| FR (1) | FR840405A (xx) |
| GB (1) | GB500524A (xx) |
| NL (1) | NL50753C (xx) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE880005C (de) * | 1942-08-19 | 1953-06-18 | Telefunken Gmbh | Kompensiertes U-Adcock-Antennensystem |
| US2422026A (en) * | 1943-07-28 | 1947-06-10 | Rca Corp | Radio direction finding |
-
1938
- 1938-07-04 CH CH207544D patent/CH207544A/de unknown
- 1938-07-06 NL NL88711A patent/NL50753C/xx active
- 1938-07-06 FR FR840405D patent/FR840405A/fr not_active Expired
- 1938-07-09 US US218382A patent/US2213281A/en not_active Expired - Lifetime
- 1938-07-11 GB GB20498/38A patent/GB500524A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB500524A (en) | 1939-02-10 |
| FR840405A (fr) | 1938-04-25 |
| CH207544A (de) | 1939-11-15 |
| US2213281A (en) | 1940-09-03 |