NL49973C - - Google Patents
Info
- Publication number
- NL49973C NL49973C NL49973DA NL49973C NL 49973 C NL49973 C NL 49973C NL 49973D A NL49973D A NL 49973DA NL 49973 C NL49973 C NL 49973C
- 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
- G01S3/065—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 by using non-directional aerial
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB827732X | 1936-10-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL49973C true NL49973C (ko) |
Family
ID=10535652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL49973D NL49973C (ko) | 1936-10-21 |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR827732A (ko) |
NL (1) | NL49973C (ko) |
-
0
- NL NL49973D patent/NL49973C/xx active
-
1937
- 1937-10-11 FR FR827732D patent/FR827732A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR827732A (fr) | 1938-05-03 |