Accession Number : AD0669833

Title :   MEASUREMENT OF THE TIME-VARYING COMPONENT OF RADIATION FROM INFRARED SOURCES,

Corporate Author : MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY

Personal Author(s) : Hall,E. C. ; Fecteau,M. L. ; Roe,C. L.

Report Date : MAY 1968

Pagination or Media Count : 51

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. (Author)

Descriptors :   (*INFRARED RADIATION, MEASUREMENT), (*RADIOMETERS, CALIBRATION), SOURCES, BLACKBODY RADIATION, BANDWIDTH, SCANNING, ELECTROMAGNETIC WAVE FILTERS, SAMPLING, SPECTRUM ANALYZERS, ACCURACY, FREQUENCY, DISTRIBUTION

Subject Categories : Infrared Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE