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OPTICAL CORRELATOR [1 record]
Record 1 - internal organization data 2012-01-09
Record 1, English
Record 1, Subject field(s)
- Range Measurements (Telecommunications)
- Radar, Radio Guidance and Goniometry
Record 1, Main entry term, English
- optical correlator
1, record 1, English, optical%20correlator
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A device that measures the coherence between two wave systems to detect weak signals lost in noise. 2, record 1, English, - optical%20correlator
Record number: 1, Textual support number: 1 CONT
While most of existing SAR [synthetic aperture radar] image registration methods try to pre-filter the speckle noise before applying an optical correlator, here we estimate the correlation directly from complex images. 3, record 1, English, - optical%20correlator
Record 1, French
Record 1, Domaine(s)
- Mesures à distance (Télécommunications)
- Radar, radioguidage et radiogoniométrie
Record 1, Main entry term, French
- corrélateur optique
1, record 1, French, corr%C3%A9lateur%20optique
masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Dispositif mesurant la cohérence entre deux systèmes d'onde afin de détecter les signaux faibles plus ou moins perdus dans le bruit. 2, record 1, French, - corr%C3%A9lateur%20optique
Record number: 1, Textual support number: 1 CONT
Pour répondre à cette interrogation, un concept d'expérience original a été imaginé : deux impulsions laser ultrabrèves de longueurs d'onde différentes mais dont la somme de fréquence est suffisante pour exciter la fluorescence d'un colorant dilué dans la microcavité sont décalées temporellement (expérience pompe-sonde). La fluorescence n'est excitée que lorsque les deux paquets d'onde se recouvrent spatialement : on réalise ainsi un corrélateur optique. 3, record 1, French, - corr%C3%A9lateur%20optique
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Medidas de distancia (Telecomunicaciones)
- Guía radárica, radioguía y radiogoniometría
Record 1, Main entry term, Spanish
- correlador óptico
1, record 1, Spanish, correlador%20%C3%B3ptico
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 CONT
Hace más de 30 años Van der Lugt inició una época de expansión de la óptica de Fourier al introducir por primera vez una exitosa configuración para el procesado óptico de datos - el llamado correlador óptico. Esta operación está basada en la capacidad de una lente convexa de realizar una operación proporcional a la transformada de Fourier en dos dimensiones de un objeto y cuya respuesta está localizada en el plano focal. 1, record 1, Spanish, - correlador%20%C3%B3ptico
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