FR51057E - Appareil de répérage par le son - Google Patents
Appareil de répérage par le sonInfo
- Publication number
- FR51057E FR51057E FR51057DA FR51057E FR 51057 E FR51057 E FR 51057E FR 51057D A FR51057D A FR 51057DA FR 51057 E FR51057 E FR 51057E
- Authority
- FR
- France
- Prior art keywords
- tracking device
- sound tracking
- sound
- tracking
- 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
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound 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
- 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)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR51057T | 1939-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR51057E true FR51057E (fr) | 1941-08-06 |
Family
ID=8685975
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR864172D Expired FR864172A (fr) | 1939-12-19 | 1939-11-16 | Appareil de repérage par le son |
FR51057D Expired FR51057E (fr) | 1939-12-19 | 1939-12-19 | Appareil de répérage par le son |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR864172D Expired FR864172A (fr) | 1939-12-19 | 1939-11-16 | Appareil de repérage par le son |
Country Status (1)
Country | Link |
---|---|
FR (2) | FR864172A (fr) |
-
1939
- 1939-11-16 FR FR864172D patent/FR864172A/fr not_active Expired
- 1939-12-19 FR FR51057D patent/FR51057E/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR864172A (fr) | 1941-04-21 |
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