DocumentCode :
2931674
Title :
Microwave technology innovations in orbiting VLBI
Author :
D´Addario, L.R.
Author_Institution :
Nat. Radio Astron. Obs., Charlottesville, VA, USA
fYear :
1992
fDate :
1-5 June 1992
Firstpage :
1375
Abstract :
The radio astronomical technique of very long baseline interferometry (VLBI) will soon be extended beyond the Earth´s surface by placing antennas and receiving systems in high Earth orbit. Two such orbiting VLBI telescopes are expected to be in operation by 1995. The technical challenges of these projects have produced several interesting innovations in the microwave area, including designs of large, deployable antennas; designs of multifrequency feed systems; cryogenic low-noise amplifiers; and methods of precise time synchronization with ground telescopes.<>
Keywords :
artificial satellites; microwave amplifiers; microwave antennas; radioastronomical techniques; radiotelescopes; radiowave interferometry; cryogenic low-noise amplifiers; deployable antennas; microwave; multifrequency feed systems; orbiting VLBI telescopes; radio astronomical technique; radiotelescopes; receiving systems; time synchronization; very long baseline interferometry; Earth; Microwave antennas; Microwave technology; Microwave theory and techniques; Optical design; Radio interferometry; Receiving antennas; Space technology; Technological innovation; Telescopes;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Symposium Digest, 1992., IEEE MTT-S International
Conference_Location :
Albuquerque, NM, USA
ISSN :
0149-645X
Print_ISBN :
0-7803-0611-2
Type :
conf
DOI :
10.1109/MWSYM.1992.188262
Filename :
188262
Link To Document :
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