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pro vyhledávání: '"R. Torguet"'
Akademický článek
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Publikováno v:
IEEE 1992 Ultrasonics Symposium Proceedings.
The advantages of acoustooptic techniques over classical electronic ones for signal correlation are reviewed. The limitations of these techniques and their drawbacks as compared to electronic systems are analyzed. By an appropriate association of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78b8ba82ff505c3e9545e974ef72cc52
https://doi.org/10.1109/ultsym.1992.275953
https://doi.org/10.1109/ultsym.1992.275953
Publikováno v:
IEEE 1991 Ultrasonics Symposium.
A compact architecture for a real-time signal compressing processor based on the acoustooptic interaction is presented. The processor is designed in a single paratellurite acoustooptic Bragg cell with an access time of 40 mu s. This yields a 1023-poi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93c6c3b7a9945a85c830be8cd1f45cf6
https://doi.org/10.1109/ultsym.1991.234227
https://doi.org/10.1109/ultsym.1991.234227
Publikováno v:
Journal of the Acoustical Society of America
Journal of the Acoustical Society of America, Acoustical Society of America, 2000, 108, pp.2012-2020
Journal of the Acoustical Society of America, 2000, 108, pp.2012-2020
Journal of the Acoustical Society of America, Acoustical Society of America, 2000, 108, pp.2012-2020
Journal of the Acoustical Society of America, 2000, 108, pp.2012-2020
In this paper, a new tool is proposed to carry out acoustic cavitation monitoring and to have an overview of its effects in applications. After a brief review of the cavitation characterization techniques, it is shown that cavitation noise is a suita
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b90ca3107370d405d51fa9a8853fef47
https://pubmed.ncbi.nlm.nih.gov/11108340
https://pubmed.ncbi.nlm.nih.gov/11108340
Publikováno v:
1993 Proceedings IEEE Ultrasonics Symposium.
We propose in this paper a GPS signal processing unit based on the acousto-optic technic. A 10323-point compact correlator is reviewed. It is matched to the GPS sequences through time compression hardware. Acquisition is implemented with a single Dop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ad8ac88354115d2fcbcedc7ad508a4a
https://doi.org/10.1109/ultsym.1993.339561
https://doi.org/10.1109/ultsym.1993.339561
We propose in this paper an acousto-optic processing unit for a rapicf Doppler resolving in the GPS system. A 1023-point acousto-optic correlator is reviewed and matched to our application through an adequate sampling and time-compressing of the GPS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::338c5c20626dc4e8797e8491649b4047
https://doi.org/10.1016/b978-0-7506-1877-9.50028-7
https://doi.org/10.1016/b978-0-7506-1877-9.50028-7
Publikováno v:
Ultrasonics. 17:255-260
Ultrasonic imaging devices often use transducer arrays for sampling the incoming acoustic field and converting it into electrical signals. After some convenient processing (amplification, dephasing, summing, etc), the electrical signals are used to m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10e2d4d18a610f93e4d6b3d587dac5ea
https://doi.org/10.1016/0041-624x(79)90021-0
https://doi.org/10.1016/0041-624x(79)90021-0
Publikováno v:
International Journal of Heat and Mass Transfer. 27:511-517
Resume Cet article presente une methode non locale de mesure des conductivites thermiques, eliminant rigoureusement le probleme de la resistance de contact et reduisant l'effet des phenomenes de transport dans le cas des milieux poreux. Cette methode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e39b306bd4a0d0318712020ffa175a5
https://doi.org/10.1016/0017-9310(84)90024-3
https://doi.org/10.1016/0017-9310(84)90024-3
Publikováno v:
Journal of Applied Physics. 59:3028-3032
The application of acoustic microscopy to the nondestructive evaluation of mechanical parts in their bulk is somewhat limited by the need for a great number of lens probes (in order to analyze the sample over its whole thickness). A zooming device is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1410f64b51abeb8be4533fdd4b896844
https://doi.org/10.1063/1.336924
https://doi.org/10.1063/1.336924
Publikováno v:
Optics Communications. 16:411-416
A new optical method for measuring the acoustical wavelengths with a great accuracy has been investigated. An acousto-optical interaction is performed and the acoustical frequency range is such that the diffraction take place in “Bragg regime”. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b667813b3a22cd3e8900d895327a8a18
https://doi.org/10.1016/0030-4018(76)90030-4
https://doi.org/10.1016/0030-4018(76)90030-4