FR731833A - Perfectionnement aux appareils de repérage des aéronefs - Google Patents
Perfectionnement aux appareils de repérage des aéronefsInfo
- Publication number
- FR731833A FR731833A FR731833DA FR731833A FR 731833 A FR731833 A FR 731833A FR 731833D A FR731833D A FR 731833DA FR 731833 A FR731833 A FR 731833A
- Authority
- FR
- France
- Prior art keywords
- development
- tracking devices
- aircraft tracking
- aircraft
- devices
- 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.)
- 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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR731833T | 1931-04-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR731833A true FR731833A (fr) | 1932-09-08 |
Family
ID=9119648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR731833D Expired FR731833A (fr) | 1931-04-08 | 1931-04-08 | Perfectionnement aux appareils de repérage des aéronefs |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE385620A (fr) |
FR (1) | FR731833A (fr) |
-
0
- BE BE385620D patent/BE385620A/fr unknown
-
1931
- 1931-04-08 FR FR731833D patent/FR731833A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE385620A (fr) |
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