Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Irwin J. Abramovitz"'
Publikováno v:
SPIE Proceedings.
A multistage optically implemented microwave frequency synthesizer has been designed and fabricated. The concept and implementation are described with emphasis on operational characteristics of a prototype 3-stage unit. The synthesizer is designed as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ec0443835a3468afbf9d0c48aed816b
https://doi.org/10.1117/12.218522
https://doi.org/10.1117/12.218522
Publikováno v:
SPIE Proceedings.
An acousto-optic correlator has been developed for application to radar report-track association. This correlator employs a 2D, ferro-electric liquid crystal spatial light modulator for storage of track data while report data is input to the system's
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0f00607f1d459264e110f70645a6086
https://doi.org/10.1117/12.177423
https://doi.org/10.1117/12.177423
Autor:
Irwin J. Abramovitz, D. Mergerian, C. Y. Lyu, D. E. Flechsig, D. Kenneth Davies, E. C. Malarkey, Anastasios P. Goutzoulis, M. M. Driscoll
Publikováno v:
Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III.
An optical approach to the implementation of RF synthesis is described which utilizes the single-sideband feature of acousto-optic modulation to achieve synthesis via the mix-and-divide approach without the use of filters. Alternative approaches to r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::934cb5d772097868410230589f10a2c2
https://doi.org/10.1117/12.138412
https://doi.org/10.1117/12.138412
Autor:
M.D. Wohlers, W.H. Haydl, Gianfranco Manes, John E. Bowers, P.C. Brossard, R.A. St. Cyr, C.R. Vale, E.G. Kosco, Y. Uemura, G.S. Kino, T. Kodama, D.C. Malocha, Irwin J. Abramovitz, K. Hazama, T. Murata, N.G. Jones, L. P. Solie, John N. Lee, C.J. Huber, J.H. Goll, P. Tournois, N. J. Berg, Shuji Matsuura, J.H. Collins, P.G. Dragonetti, Peter Grant, B.J. Darby, K. Sato, M.W. Casseday, W. Sander, H. Gautier, Richard A. Moore, J.M. Hannah, J. Henaff, Wulf-D. Wirth, H. Olaisen, S.A. Reible, D. Behar, W.J. Tanski
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 29:507-512
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3da00a95618621205e062c014b8b2ed
https://doi.org/10.1109/tmtt.1981.1130384
https://doi.org/10.1109/tmtt.1981.1130384
Publikováno v:
SPIE Proceedings.
The sophisticated requirements of modern-day communications, radar, and electronic warfare (EW) systems have strained the capabilities of currently available signal-processing hardware. Specifically, the require-ment for real-time, large-bandwidth an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d49e41febc9f47023633e6597916887
https://doi.org/10.1117/12.958513
https://doi.org/10.1117/12.958513
Autor:
Irwin J. Abramovitz
Publikováno v:
SPIE Proceedings.
A compact acousto-optic time integrating correlator has been developed for passive surveillance applications. The correlator has a bandwidth of 100 MHz about a center frequency (IF) of 300 MHz to provide time-difference-of-arrival information with a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96e773e5b2047ca7d10e38b6d904b06a
https://doi.org/10.1117/12.945196
https://doi.org/10.1117/12.945196
Publikováno v:
1980 Intl Optical Computing Conf II.
A new architecture for performing time-integration correlation is described. The correlator uses a surface acoustic wave (SAW) delay line, and features the optical interference of two coherent light beams which have been Bragg-diffracted by SAW's pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea03a7a17328a4624c489839bc8c941b
https://doi.org/10.1117/12.958878
https://doi.org/10.1117/12.958878
Publikováno v:
The Journal of the Acoustical Society of America. 82:1470-1470
An acousto-optic diffraction and signal mixing device. A laser light beam is expanded and shaped into a sheet beam which is directed across the surface of an acousto-optic medium. Four acoustic transducers are disposed on the acousto-optic medium, tw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15906780e1a11936760b3adbf74a433a
https://doi.org/10.1121/1.395201
https://doi.org/10.1121/1.395201
Publikováno v:
The Journal of the Acoustical Society of America. 78:1926-1926
A method and device for processing spread-spectrum and other wideband comications and radar signals to obtain three and four product correlated signals. A laser beam is split and shaped into first and second sheet beams. The first beam is directed to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82420dc56675c6f3f896308da309bfff
https://doi.org/10.1121/1.392706
https://doi.org/10.1121/1.392706
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