FR2177504B1 - - Google Patents
Info
- Publication number
- FR2177504B1 FR2177504B1 FR7210757A FR7210757A FR2177504B1 FR 2177504 B1 FR2177504 B1 FR 2177504B1 FR 7210757 A FR7210757 A FR 7210757A FR 7210757 A FR7210757 A FR 7210757A FR 2177504 B1 FR2177504 B1 FR 2177504B1
- Authority
- FR
- France
- 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
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7210757A FR2177504B1 (ja) | 1972-03-28 | 1972-03-28 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7210757A FR2177504B1 (ja) | 1972-03-28 | 1972-03-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2177504A1 FR2177504A1 (ja) | 1973-11-09 |
FR2177504B1 true FR2177504B1 (ja) | 1976-10-29 |
Family
ID=9095893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7210757A Expired FR2177504B1 (ja) | 1972-03-28 | 1972-03-28 |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2177504B1 (ja) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB399957A (en) * | 1931-08-06 | 1933-10-19 | Soc Ind Des Procedes Loth | Improvements in apparatus for determining the direction of magnetic or electro-magnetic fields |
US1968068A (en) * | 1931-08-06 | 1934-07-31 | American Loth Corp | Process and apparatus for measuring the phase difference of electric currents |
-
1972
- 1972-03-28 FR FR7210757A patent/FR2177504B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2177504A1 (ja) | 1973-11-09 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |