20 September 2002 Low-temperature blackbodies and facility for calibration of them
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Abstract
The calibration of IR sensors, thermal imagers, instrumentation for remote earth sensing, signature recognition, and low background spacebome radiom-eters requires development of low- and near-ambient-temperature reference standard sources capable of operating in vacuum at low or medium background conditions. The paper contains the characteristics of blackbodies (BB), developed at the All-Russian Research Institute for Optical and Physical Measurements (VNIIOFI). A novel Medium Background Facility (MBF) intended for calibrating IR sources has been developed at VNIIOFI. The MBF used for the calibration under vacuum conditions (10-3 Pa) and medium background temperatures includes a Ga Fixed-Point Blackbody (29.76 °C), Variable Temperature Blackbody (-60 °C ~ +80 °C) and Filter Radiometer. A brief description of the operating principles and specifications of the MBF is presented. The results of a comparison of the Variable Temperature Blackbody and Ga Fixed Point Blackbody in the Medium Background Facility are given. The measurement uncertainties radiance temperature associated with spectral bandwidth are discussed.
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Svetlana P. Morozova, Pavel A. Morozov, Victor I. Sapritsky, Boris E. Lisiansky, N. L. Dovgilov, Yanxi Liang, Yanmei Li, Wenlong Yue, "Low-temperature blackbodies and facility for calibration of them", Proc. SPIE 4927, Optical Design and Testing, (20 September 2002); doi: 10.1117/12.465976; https://doi.org/10.1117/12.465976
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