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Titolo:
Coherent optical beam forming with passive millimeter-wave arrays
Autore:
Blanchard, PM; Greenaway, AH; Harvey, AR; Webster, K;
Indirizzi:
Def Evaluat & Res Agcy, Elect Sector, Malvern WR14 3PS, Worcs, England DefEvaluat & Res Agcy Malvern Worcs England WR14 3PS 3PS, Worcs, England
Titolo Testata:
JOURNAL OF LIGHTWAVE TECHNOLOGY
fascicolo: 3, volume: 17, anno: 1999,
pagine: 418 - 425
SICI:
0733-8724(199903)17:3<418:COBFWP>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASED-ARRAY; ANTENNA; PROCESSOR;
Keywords:
Aperture antennas; array signal processing; millimeter-wave antenna arrays millimeter wave imaging; optical fiber applications; optical image processing optical modulation; phase measurement;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Blanchard, PM Def Evaluat & Res Agcy, Elect Sector, Malvern WR14 3PS, Worcs, England Def Evaluat & Res Agcy Malvern Worcs England WR14 3PS gland
Citazione:
P.M. Blanchard et al., "Coherent optical beam forming with passive millimeter-wave arrays", J LIGHTW T, 17(3), 1999, pp. 418-425

Abstract

Passive millimeter-wave imaging requires large apertures to achieve an angular resolution comparable to that of typical infrared imagers. Aperture synthesis offers a route to achieving high resolution without using a single large aperture, by interferometrically combining the signals from a number of smaller distributed apertures. In such a system the individual millimeter-wave signals must be transported to a common location with good phase fidelity and combined to form the image, This paper discusses a technique called coherent optical beam forming which performs optical transport of the upconverted millimeter-wave signal and direct image formation at the opticalfrequency, Proof of principle experiments are described that demonstrate coherent optical beam forming with a point source and a method of self-calibrating the array to remove phase errors.

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Documento generato il 18/09/20 alle ore 17:11:23