FR2284887A1 - Indicateur de direction - Google Patents
Indicateur de directionInfo
- Publication number
- FR2284887A1 FR2284887A1 FR7430533A FR7430533A FR2284887A1 FR 2284887 A1 FR2284887 A1 FR 2284887A1 FR 7430533 A FR7430533 A FR 7430533A FR 7430533 A FR7430533 A FR 7430533A FR 2284887 A1 FR2284887 A1 FR 2284887A1
- Authority
- FR
- France
- Prior art keywords
- direction indicator
- indicator
- 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.)
- Withdrawn
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
- G01S3/143—Systems for determining direction or deviation from predetermined direction by vectorial combination of signals derived from differently oriented antennae
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4612173A GB1475289A (en) | 1973-10-03 | 1973-10-03 | Direction finders |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2284887A1 true FR2284887A1 (fr) | 1976-04-09 |
Family
ID=10439926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7430533A Withdrawn FR2284887A1 (fr) | 1973-10-03 | 1974-09-10 | Indicateur de direction |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2284887A1 (fr) |
GB (1) | GB1475289A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998018018A1 (fr) * | 1996-10-24 | 1998-04-30 | Northern Telecom Limited | Determination de la direction de deplacement d'un terminal mobile dans un systeme de communications cellulaire |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2095497B (en) * | 1981-03-24 | 1984-08-15 | Racal Communications Equip | Improvements in and relating to direction finding |
-
1973
- 1973-10-03 GB GB4612173A patent/GB1475289A/en not_active Expired
-
1974
- 1974-09-10 FR FR7430533A patent/FR2284887A1/fr not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998018018A1 (fr) * | 1996-10-24 | 1998-04-30 | Northern Telecom Limited | Determination de la direction de deplacement d'un terminal mobile dans un systeme de communications cellulaire |
Also Published As
Publication number | Publication date |
---|---|
GB1475289A (en) | 1977-06-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |