FR2180449B1 - - Google Patents
Info
- Publication number
- FR2180449B1 FR2180449B1 FR7213440A FR7213440A FR2180449B1 FR 2180449 B1 FR2180449 B1 FR 2180449B1 FR 7213440 A FR7213440 A FR 7213440A FR 7213440 A FR7213440 A FR 7213440A FR 2180449 B1 FR2180449 B1 FR 2180449B1
- 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
- G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
- G01S3/48—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7213440A FR2180449B1 (fr) | 1972-04-17 | 1972-04-17 | |
IT4946673A IT980226B (it) | 1972-04-17 | 1973-04-16 | Radiogoniometro di pordo |
DE19732319241 DE2319241A1 (de) | 1972-04-17 | 1973-04-16 | Bordpeilgeraet |
GB1830573A GB1368926A (en) | 1972-04-17 | 1973-04-16 | Radio direction-finding apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7213440A FR2180449B1 (fr) | 1972-04-17 | 1972-04-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2180449A1 FR2180449A1 (fr) | 1973-11-30 |
FR2180449B1 true FR2180449B1 (fr) | 1976-10-29 |
Family
ID=9096982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7213440A Expired FR2180449B1 (fr) | 1972-04-17 | 1972-04-17 |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2319241A1 (fr) |
FR (1) | FR2180449B1 (fr) |
GB (1) | GB1368926A (fr) |
IT (1) | IT980226B (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2433075A1 (fr) * | 1978-08-08 | 1980-03-07 | Herstad Oystein | Plate-forme d'atterrissage pour helicopteres |
FR2617981B1 (fr) * | 1987-07-07 | 1989-06-09 | Thomson Csf | Procede et dispositif de protection contre un brouilleur dans une station radio comportant plusieurs antennes commutables et leur utilisation a la realisation de radiogoniometres |
CN109375155B (zh) * | 2018-11-28 | 2022-10-21 | 成都中星世通电子科技有限公司 | 一种基于听觉映射的无线电信号监测测向方法及处理器 |
-
1972
- 1972-04-17 FR FR7213440A patent/FR2180449B1/fr not_active Expired
-
1973
- 1973-04-16 DE DE19732319241 patent/DE2319241A1/de active Pending
- 1973-04-16 IT IT4946673A patent/IT980226B/it active
- 1973-04-16 GB GB1830573A patent/GB1368926A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1368926A (en) | 1974-10-02 |
DE2319241A1 (de) | 1973-10-25 |
IT980226B (it) | 1974-09-30 |
FR2180449A1 (fr) | 1973-11-30 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
CL | Concession to grant licenses | ||
ST | Notification of lapse |