FR971272A - Improvements to direction-finding systems - Google Patents
Improvements to direction-finding systemsInfo
- Publication number
- FR971272A FR971272A FR971272DA FR971272A FR 971272 A FR971272 A FR 971272A FR 971272D A FR971272D A FR 971272DA FR 971272 A FR971272 A FR 971272A
- Authority
- FR
- France
- Prior art keywords
- finding systems
- finding
- systems
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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 |
---|---|---|---|
FR971272T | 1940-03-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR971272A true FR971272A (en) | 1951-01-15 |
Family
ID=9512112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR971272D Expired FR971272A (en) | 1940-03-12 | 1940-03-12 | Improvements to direction-finding systems |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR971272A (en) |
-
1940
- 1940-03-12 FR FR971272D patent/FR971272A/en not_active Expired
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