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Infrared Transfer Radiometer for Broadband and Spectral Calibration of Space Chambers



Timothy M. Jung, Adriaan C. Carter, Solomon I. Woods, Simon G. Kaplan, Raju V. Datla


The Low-Background Infrared (LBIR) facility at NIST has recently completed construction of an infrared transfer radiometer with an integrated cryogenic Fourier transform spectrometer (Cryo-FTS). This mobile system can be deployed to customer sites for broadband and spectral calibrations of space chambers and low-background HWIL testbeds. The Missile Defense Transfer Radiometer (MDXR) has many of the capabilities of a complete IR calibration facility and will replace our existing filter-based transfer radiometer (BXR) as the NIST standard detector deployed to MDA facilities. The MDXR features numerous improvements over the BXR, including: a cryogenic Fourier transform spectrometer, an on-board absolute cryogenic radiometer (ACR), an internal blackbody reference, and an integrated collimator. The Cryo-FTS can be used to measure high resolution spectra from 4 to 20 micrometers, using a Si:As blocked-impurity-band (BIB) detector. The on-board ACR can be used for self-calibration of the MDXR BIB as well as for absolute measurements of infrared sources. A set of filter wheels and a rotating polarizer within the MDXR allow for filter-based and polarization-sensitive measurements. The optical design of the MDXR makes both radiance and irradiance measurements possible and enables calibration of both divergent and collimated sources. Details of the various MDXR components will be presented as well as initial testing data on their performance.
Proceedings Title
Proceedings of SPIE
Conference Dates
April 5-9, 2010
Conference Location
Orlando, FL, US
Conference Title
SPIE Defense and Security Symposium


calibration, cryogenic, Fourier-transform spectrometer, infrared, radiometry, transfer radiometer


Jung, T. , Carter, A. , Woods, S. , Kaplan, S. and Datla, R. (2010), Infrared Transfer Radiometer for Broadband and Spectral Calibration of Space Chambers, Proceedings of SPIE, Orlando, FL, US, [online], (Accessed April 20, 2024)
Created April 22, 2010, Updated October 12, 2021