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WIRELESS OPTICS [2 records]
Record 1 - internal organization data 2009-08-28
Record 1, English
Record 1, Subject field(s)
- Optical Telecommunications
Record 1, Main entry term, English
- free-space optics
1, record 1, English, free%2Dspace%20optics
correct
Record 1, Abbreviations, English
- FSO 1, record 1, English, FSO
correct
Record 1, Synonyms, English
- free space optics 2, record 1, English, free%20space%20optics
correct
- FSO 3, record 1, English, FSO
correct
- FSO 3, record 1, English, FSO
- free-space photonics 4, record 1, English, free%2Dspace%20photonics
correct
- FSP 5, record 1, English, FSP
correct
- FSP 5, record 1, English, FSP
- optical wireless 6, record 1, English, optical%20wireless
correct
- wireless optics 1, record 1, English, wireless%20optics
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A technology that uses light propagating in free space to transmit data between two points. 7, record 1, English, - free%2Dspace%20optics
Record number: 1, Textual support number: 1 CONT
Free-Space Optics(also known as FSO, Wireless Optics or Optical Wireless) is an optical data, voice and video transmission system. Like fiber optic cable, wireless optics communication systems use laser light to transmit a digital signal between two transceivers. However, unlike fiber, the laser like is transtmited through the air(free-space) instead of through a glass strand. In order for the digital signal to be transmitted and received, there must be clear line of site between each wireless optics unit. In other words, there should be no obstructions such as trees or buildings between the transceiver units. 1, record 1, English, - free%2Dspace%20optics
Record number: 1, Textual support number: 2 CONT
The technology is useful where the physical connection of the transmit and receive locations is difficult, for example in cities where the laying of fibre optic cables is expensive. Free Space Optics is also used to communicate between space-craft, since outside of the atmosphere there is little to distort the signal. The optical links usually use infrared laser light, although low-data-rate communication over short distances is possible using LEDs [Light Emitting Diode]. IrDA [Infrared Data Association] is a very simple form of free-space optical communications. Distances up to the order of 10 km are possible, but the distance and data rate of connection is highly dependent on atmospheric conditions. 7, record 1, English, - free%2Dspace%20optics
Record number: 1, Textual support number: 1 OBS
In Information Technology and Communications, IrDA refers to Infrared Data Association, a standard for communication between devices (such as computers, PDAs and mobile phones) over short distances using infrared signals. 8, record 1, English, - free%2Dspace%20optics
Record 1, Key term(s)
- free space photonics
Record 1, French
Record 1, Domaine(s)
- Télécommunications optiques
Record 1, Main entry term, French
- optique sans fil
1, record 1, French, optique%20sans%20fil
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
L'optique sans fil et la radio sont deux technologies foncièrement différentes qui ont longtemps été considérées comme concurrentes. [...] Avec l'optique sans fil, on obtient de très hauts débits garantis jusqu'à 10 Gb [gigabits] se propageant sur de courtes ou de moyennes distances (entre 100 m et 2 km), en «full duplex». 1, record 1, French, - optique%20sans%20fil
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2001-04-25
Record 2, English
Record 2, Subject field(s)
- Astronautics
Record 2, Main entry term, English
- wireless power transmission
1, record 2, English, wireless%20power%20transmission
correct, officially approved
Record 2, Abbreviations, English
- WPT 2, record 2, English, WPT
correct, officially approved
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The goal of this activity is to conduct research for Space Solar Power Wireless Power Transmission(WPT) technology development to reduce the cost of electrical power and provide a stepping stone to NASA for delivery of power between objects in space, between space and surface sites, between ground and space and between ground and air platform vehicles. WPT can involve lasers or microwave along with the associated power interfaces. Microwave and laser transmission techniques have been studied with several promising approaches to safe and efficient WPT identified. These investigations have included microwave phased array transmitters, as well as visible light laser transmission and associated optics. 3, record 2, English, - wireless%20power%20transmission
Record number: 2, Textual support number: 1 OBS
wireless power transmission; WPT: term and abbreviation officially approved by the International Space Station official approval Group (ISSOAG). 4, record 2, English, - wireless%20power%20transmission
Record 2, French
Record 2, Domaine(s)
- Astronautique
Record 2, Main entry term, French
- transport d'énergie sans fil
1, record 2, French, transport%20d%27%C3%A9nergie%20sans%20fil
correct, masculine noun, officially approved
Record 2, Abbreviations, French
- TESF 1, record 2, French, TESF
correct, masculine noun, officially approved
Record 2, Synonyms, French
- transmission d'énergie sans fil 2, record 2, French, transmission%20d%27%C3%A9nergie%20sans%20fil
correct, feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
La transmission d'énergie sans fil est conceptuellement semblable à la transmission d'informations à l'aide de satellites de télécommunications, mais elle est réalisée à une intensité plus élevée. Puisque le faisceau d'énergie est destiné à être converti en électricité à très haute efficacité, il serait possible de transmettre des quantités utiles d'énergie à des intensités inférieures à celle de la lumière solaire. Les possibilités de la transmission sans fil ont été démontrées jusqu'à un niveau de 30 kW sur de courtes distances (1,6 km), avec un rendement de conversion de l'énergie radiofréquence en énergie électrique supérieur à 85 %. 3, record 2, French, - transport%20d%27%C3%A9nergie%20sans%20fil
Record number: 2, Textual support number: 2 CONT
Le TESF (transport d'énergie sans fil) [...] suppose trois opérations relativement simples : la conversion de l'électricité en ondes, la transmission de ces ondes et enfin leur reconversion en électricité après réception [...] Pour faire voyager l'électricité, il vaut mieux utiliser des micro-ondes, qui ont une longueur plus importante (environ 12 centimètres) et qui sont pratiquement insensibles aux perturbations atmosphériques. Dans le cas du transport d'énergie sans fil (TESF), l'électricité est transformée en un rayon de micro-ondes, similaire au rayon laser [...] mais invisible. Le faisceau est dirigé vers une antenne de réception, composée de milliers de radiopiles. [On peut] produire de l'électricité à partir des micro-ondes en redressant les courants produits dans une antenne avec une diode à haute fréquence, qui nous donne du courant continu. L'élément combinant une antenne haute fréquence et le composant redresseur s'appelle une radiopile. Chaque radiopile ne produit qu'un peu d'électricité, mais en en associant des dizaines, des milliers, des millions, on obtient à la sortie le nombre de gigawatts demandés. 4, record 2, French, - transport%20d%27%C3%A9nergie%20sans%20fil
Record number: 2, Textual support number: 1 OBS
transport d'énergie sans fil; TESF : terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI). 5, record 2, French, - transport%20d%27%C3%A9nergie%20sans%20fil
Record 2, Spanish
Record 2, Textual support, Spanish
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