FR2275835B1 - - Google Patents
Info
- Publication number
- FR2275835B1 FR2275835B1 FR7519472A FR7519472A FR2275835B1 FR 2275835 B1 FR2275835 B1 FR 2275835B1 FR 7519472 A FR7519472 A FR 7519472A FR 7519472 A FR7519472 A FR 7519472A FR 2275835 B1 FR2275835 B1 FR 2275835B1
- 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
-
- 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
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/933—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of aircraft or spacecraft
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/12—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18057871A | 1971-09-15 | 1971-09-15 | |
| US481902A US3921172A (en) | 1971-09-15 | 1974-06-21 | Proximity indication with range and bearing measurements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2275835A2 FR2275835A2 (fr) | 1976-01-16 |
| FR2275835B1 true FR2275835B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-05-16 |
Family
ID=26876454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7519472A Granted FR2275835A2 (fr) | 1971-09-15 | 1975-06-20 | Dispositif de localisation radio-electrique de mobiles |
Country Status (3)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2281613A2 (fr) * | 1971-09-15 | 1976-03-05 | Litchstreet Co | Dispositif de localisation radio-electrique de mobiles |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1512433A (fr) * | 1966-12-23 | 1968-02-09 | Materiel Telephonique | Système de mesure digitale d'azimut |
| US3757324A (en) * | 1971-09-15 | 1973-09-04 | Litchstreet Co | Proximity indication with range and bearing measurements |
-
1975
- 1975-06-16 GB GB2561275A patent/GB1471246A/en not_active Expired
- 1975-06-20 FR FR7519472A patent/FR2275835A2/fr active Granted
- 1975-06-20 DE DE19752527656 patent/DE2527656A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| GB1471246A (en) | 1977-04-21 |
| DE2527656A1 (de) | 1976-01-15 |
| FR2275835A2 (fr) | 1976-01-16 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |