FR2281613B1 - - Google Patents
Info
- Publication number
- FR2281613B1 FR2281613B1 FR7524555A FR7524555A FR2281613B1 FR 2281613 B1 FR2281613 B1 FR 2281613B1 FR 7524555 A FR7524555 A FR 7524555A FR 7524555 A FR7524555 A FR 7524555A FR 2281613 B1 FR2281613 B1 FR 2281613B1
- 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
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- 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
- G01S13/781—Secondary Surveillance Radar [SSR] in general
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7524555A FR2281613A2 (en) | 1971-09-15 | 1975-08-06 | Surveillance secondary radar system - uses method for determination of its distance from one of its own transponder stations |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18057871A | 1971-09-15 | 1971-09-15 | |
FR7524555A FR2281613A2 (en) | 1971-09-15 | 1975-08-06 | Surveillance secondary radar system - uses method for determination of its distance from one of its own transponder stations |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2281613A2 FR2281613A2 (en) | 1976-03-05 |
FR2281613B1 true FR2281613B1 (en) | 1982-10-22 |
Family
ID=26219021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7524555A Granted FR2281613A2 (en) | 1971-09-15 | 1975-08-06 | Surveillance secondary radar system - uses method for determination of its distance from one of its own transponder stations |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2281613A2 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3735408A (en) * | 1971-04-05 | 1973-05-22 | Litchstreet Co | Common azimuth sector indicating system |
GB1471246A (en) * | 1971-09-15 | 1977-04-21 | Litchstreet Co | Bearing determination using secondary surveillance radar |
US3757324A (en) * | 1971-09-15 | 1973-09-04 | Litchstreet Co | Proximity indication with range and bearing measurements |
US3875570A (en) * | 1973-03-27 | 1975-04-01 | Litchstreet Co | Adaptive proximity indicating system |
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1975
- 1975-08-06 FR FR7524555A patent/FR2281613A2/en active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2281613A2 (en) | 1976-03-05 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |