Accession Number:
AD0669833
Title:
MEASUREMENT OF THE TIME-VARYING COMPONENT OF RADIATION FROM INFRARED SOURCES
Descriptive Note:
Technical Report
Corporate Author:
MICHIGAN UNIV ANN ARBOR ANN ARBOR
Personal Author(s):
Report Date:
1968-05-01
Pagination or Media Count:
52.0
Abstract:
Techniques for the calibration of a temporal radiometer were studied. The calibration described for either periodic or random fluctuations utilizes sinusoidally modulated radiation from a blackbody. A complete description is given of the data acquisition and analysis facilities which were assembled for this study and used to calibrate a test radiometer. The practical aspects of spectral analysis including the interplay among filter bandwidth, scan rate, data sample length, and averaging time are discussed, and a technique for measuring the noise equivalent bandwidth of the frequency-selective filter in the spectrum analyzer is described.