DocumentCode :
1062785
Title :
An infrared heterodyne radiometer for high-resolution measurements of solar radiation and atmospheric transmission
Author :
Peyton, Bernard J. ; DiNardo, Anthony J. ; Cohen, Steven C. ; McElroy, John H. ; Coates, Robert J.
Author_Institution :
Airborne Instruments Laboratory, Cutler-Hammer, Inc., Melville, NY, USA
Volume :
11
Issue :
8
fYear :
1975
fDate :
8/1/1975 12:00:00 AM
Firstpage :
569
Lastpage :
574
Abstract :
A tunable, Dicke-switched, infrared heterodyne radiometer (IHR) has been designed, fabricated, tested, and used to observe solar radiation and determine the atmospheric transmissivity in the 
m spectral band. The IHR provides a spectral resolution of 
cm-1, a minimum detectable power level of 
W/Hz, and a temperature resolution of less than 1 K for a source temperature of 1000 K, an IF predetection bandwidth of 100 MHz, and an integration time of 30 s. Detailed design equations and measured IHR performance are presented. The IHR was used to make solar and atmospheric transmission measurements and a vertical path atmospheric attenuation of 2.3 dB has been established under favorable weather conditions. The attenuation of solar radiation due to cloud cover and haze have also been investigated.
m spectral band. The IHR provides a spectral resolution of cm-1, a minimum detectable power level of W/Hz, and a temperature resolution of less than 1 K for a source temperature of 1000 K, an IF predetection bandwidth of 100 MHz, and an integration time of 30 s. Detailed design equations and measured IHR performance are presented. The IHR was used to make solar and atmospheric transmission measurements and a vertical path atmospheric attenuation of 2.3 dB has been established under favorable weather conditions. The attenuation of solar radiation due to cloud cover and haze have also been investigated.Keywords :
Atmospheric measurements; Attenuation measurement; Bandwidth; Clouds; Equations; Infrared spectra; Radiometry; Solar radiation; Temperature; Testing;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1975.1068764
Filename :
1068764
Link To Document :
