FR2229980A1 - - Google Patents
Info
- Publication number
- FR2229980A1 FR2229980A1 FR7318137A FR7318137A FR2229980A1 FR 2229980 A1 FR2229980 A1 FR 2229980A1 FR 7318137 A FR7318137 A FR 7318137A FR 7318137 A FR7318137 A FR 7318137A FR 2229980 A1 FR2229980 A1 FR 2229980A1
- 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.)
- Withdrawn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
- G01S3/52—Systems for determining direction or deviation from predetermined direction using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal
- G01S3/54—Systems for determining direction or deviation from predetermined direction using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal the apparent movement of the antenna being produced by coupling the receiver cyclically and sequentially to each of several fixed spaced antennas
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
- G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar Systems Or Details Thereof (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7318137A FR2229980A1 (en) | 1973-05-18 | 1973-05-18 | |
JP5464074A JPS5020686A (en) | 1973-05-18 | 1974-05-17 | |
DE19742424159 DE2424159A1 (en) | 1973-05-18 | 1974-05-17 | ARRANGEMENT FOR GUIDING AIRCRAFT ALONG AN ANGLE COORDINATE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7318137A FR2229980A1 (en) | 1973-05-18 | 1973-05-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2229980A1 true FR2229980A1 (en) | 1974-12-13 |
Family
ID=9119567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7318137A Withdrawn FR2229980A1 (en) | 1973-05-18 | 1973-05-18 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS5020686A (en) |
DE (1) | DE2424159A1 (en) |
FR (1) | FR2229980A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5614944B1 (en) * | 1971-03-15 | 1981-04-07 | ||
JPS5426150U (en) * | 1977-07-26 | 1979-02-20 | ||
DE2813189C2 (en) * | 1978-03-25 | 1984-03-08 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Procedure for precise flight guidance and navigation |
-
1973
- 1973-05-18 FR FR7318137A patent/FR2229980A1/fr not_active Withdrawn
-
1974
- 1974-05-17 JP JP5464074A patent/JPS5020686A/ja active Pending
- 1974-05-17 DE DE19742424159 patent/DE2424159A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS5020686A (en) | 1975-03-05 |
DE2424159A1 (en) | 1974-12-05 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |