NL18344C - - Google Patents
Info
- Publication number
- NL18344C NL18344C NL18344DA NL18344C NL 18344 C NL18344 C NL 18344C NL 18344D A NL18344D A NL 18344DA NL 18344 C NL18344 C NL 18344C
- 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)
- Eye Examination Apparatus (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR442462X | 1925-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL18344C true NL18344C (xx) |
Family
ID=8900212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL18344D NL18344C (xx) | 1925-05-08 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE442462C (xx) |
| FR (1) | FR610443A (xx) |
| GB (1) | GB251984A (xx) |
| NL (1) | NL18344C (xx) |
-
0
- NL NL18344D patent/NL18344C/xx active
-
1925
- 1925-05-08 FR FR610443D patent/FR610443A/fr not_active Expired
-
1926
- 1926-04-25 DE DES74260D patent/DE442462C/de not_active Expired
- 1926-05-01 GB GB11532/26A patent/GB251984A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB251984A (en) | 1927-04-07 |
| FR610443A (fr) | 1926-09-06 |
| DE442462C (de) | 1927-03-31 |