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Calibration of IR Test Chambers with the Missile Defense Transfer Radiometer

Published

Author(s)

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

Abstract

The Missile Defense Transfer Radiometer (MDXR) is designed to calibrate infrared collimated and flood sources over the fW/cm2 to W/cm2 power range from 3 m to 28 m in wavelength. The MDXR operates in three different modes: as a filter radiometer, a Fourier-transform spectrometer (FTS)- based spectroradiometer, and as an absolute cryogenic radiometer (ACR). Since 2010, the MDXR has made measurements of the collimated infrared irradiance at the output port of seven different infrared test chambers at several facilities. We present a selection of results from these calibration efforts compared to signal predictions from the respective chamber models for the three different MDXR calibration modes. We also compare the results to previous measurements made of the same chambers with a legacy transfer radiometer, the NIST BXR. In general, the results are found to agree within their combined uncertainties, with the MDXR having 30 % lower uncertainty and greater spectral coverage.
Proceedings Title
Proceedings of SPIE Vol 8707
Conference Dates
April 29-May 3, 2013
Conference Location
Baltimore, MD
Conference Title
Technologies for Synthetic Environments: Hardware-in-the-Loop XVIII

Keywords

infrared, radiometry, calibration, cryogenics, transfer radiometer, Fourier-transform spectrometer
Created September 30, 2013, Updated February 19, 2017