Title :
Millimeter radio astronomical research: acousto-optic spectrometer device and measurement uncertainties
Author :
Pacheco, Gefeson Mendes ; Scalise, Eugenio, Jr.
Author_Institution :
Div. of Astrophys., Nat. Space Res. Inst., Sao Jose dos Campos, Brazil
Abstract :
To overcome the limits imposed by acoustic attenuation and velocity, a low cost acousto-electro-optic interaction configuration with high channel number possibilities is proposed. From the turbulence and temperature effects on the measurement uncertainties, the authors establish the relative importance of those two parameters for radio astronomical observations at millimeter wavelengths
Keywords :
acousto-optical devices; acoustoelectric devices; millimetre wave devices; optoelectronic devices; radiofrequency spectrometers; radiotelescopes; spectroscopy; acoustic attenuation; acoustic velocity; acousto-electro-optic interaction configuration; channel number; measurement uncertainties; millimeter radio astronomical research; radio astronomical observations; temperature effects; turbulence; Acoustic beams; Acoustic waves; Extraterrestrial measurements; Frequency; Measurement uncertainty; Millimeter wave devices; Optical attenuators; Optical refraction; Optical sensors; Spectroscopy;
Conference_Titel :
Microwave and Optoelectronics Conference, 1995. Proceedings., 1995 SBMO/IEEE MTT-S International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-2674-1
DOI :
10.1109/SBMOMO.1995.509655
