BE423438A - - Google Patents
Info
- Publication number
- BE423438A BE423438A BE423438DA BE423438A BE 423438 A BE423438 A BE 423438A BE 423438D A BE423438D A BE 423438DA BE 423438 A BE423438 A BE 423438A
- Authority
- BE
- Belgium
- Prior art keywords
- calculating
- foot
- acoustic
- listening
- devices
- Prior art date
Links
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE423438A true BE423438A (enExample) |
Family
ID=84891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE423438D BE423438A (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE423438A (enExample) |
-
0
- BE BE423438D patent/BE423438A/fr unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2579170A1 (fr) | Organe de centrage d'un plateau oscillant, a bielles tangentielles, pour la commande du pas des pales d'un rotor d'helicoptere | |
| FR2651079A1 (fr) | Dispositif de transmission d'images en temps reel, a partir d'un engin volant guide | |
| EP0045265A2 (fr) | Sonde d'échographie à balayage sectoriel mécanique | |
| BE1010513A4 (fr) | Plate-forme asservie et stabilisee perfectionnee. | |
| FR2561400A1 (fr) | Dispositif de prise de vues stereoscopiques a base variable | |
| FR2634289A1 (fr) | Periscope panoramique | |
| FR2572515A1 (fr) | Dispositif de detection de position | |
| FR2525352A1 (fr) | Optique de champ refroidie pour telescopes a infrarouge | |
| FR2465240A1 (fr) | Bonnette et appareil de prise de vues l'utilisant | |
| FR2575839A1 (fr) | Objectif a distance focale variable | |
| BE423438A (enExample) | ||
| FR2463424A1 (fr) | Monture a crosse pour telescopes | |
| EP0702246B1 (fr) | Dispositif embarquable de mesure de rétrodiffusion de lumière | |
| FR2582817A1 (fr) | Objectif a longueur focale variable | |
| EP3339932A1 (fr) | Zoom optique a pupille mobile | |
| BE486296A (enExample) | ||
| FR2663735A1 (fr) | Dispositif de regulation de longueur de parcours pour gyrolasers et ces gyrolasers. | |
| EP3489152A2 (fr) | Instrument d'observation comportant un autocollimateur a miroir monte sur viseur d'etoiles | |
| EP0099769B1 (fr) | Dispositif d'analyse d'un champ spatial pour la localisation angulaire d'un objet rayonnant | |
| EP0130869A1 (fr) | Dispositif à imagerie vidéo, notamment pour autodirecteur | |
| FR2623636A1 (fr) | Dispositif de visee opto-electronique | |
| FR2739461A1 (fr) | Dispositif a imagerie video, utilisable pour autodirecteur infrarouge passif | |
| FR2690532A1 (fr) | Dispositif de pointage pour appareil optique. | |
| CH237011A (fr) | Appareil de prise de vues cinématographiques à tourelle d'objectifs. | |
| EP2703691A1 (fr) | Dispositif de positionnement angulaire à trois points morts |