Measurement of small temperature fluctuations at high average temperatureBoth absolute and differential temperature measurements were simultaneously performed as a function of time for a pixel on a high-temperature, multi-spectral, spatially and temporally varying infrared target simulator. A scanning laser beam was used to maintain a pixel at an on-the-average constant temperature of 520 K. The laser refresh rate of up to 1 kHz resulted in small-amplitude temperature fluctuations with a peak-to-peak amplitude of less than 1 K. The experimental setup to accurately measure the differential and the absolute temperature as a function of time is described.
Document ID
19900023116
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Scholl, James W. (Alenka Associates Tempe, AZ, United States)
Scholl, Marija S. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)