12 October 2010 Calibration source and temperature standard for passive millimetre wave imagers
Author Affiliations +
Abstract
This paper discusses a practical and affordable approach to the accurate calibration of electronic beam-forming passive millimetre-wave imagers. With the aim of calibrating imagers with radiometric sensitivities ΔT < 1 K, we have constructed a thermal radiation source at ambient temperature that fills the imager field-of-view at close range and can support several controllable thermal radiation sources to provide absolute and differential radiation temperature standards. Using a variety of temperature sensors, which have been extensively cross-calibrated against each other and a commercially provided calibration standard that is accurate to < 0.1 K, we have achieved absolute and relative calibration temperature uncertainties of less than 0.25 K.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Chris T. Taylor, Chris T. Taylor, Peter Scicluna, Peter Scicluna, Peter Wilkinson, Peter Wilkinson, Neil Salmon, Neil Salmon, } "Calibration source and temperature standard for passive millimetre wave imagers", Proc. SPIE 7837, Millimetre Wave and Terahertz Sensors and Technology III, 78370N (12 October 2010); doi: 10.1117/12.864847; https://doi.org/10.1117/12.864847
PROCEEDINGS
6 PAGES


SHARE
Back to Top