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 SPIE.
Original language | English |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering|Proc SPIE Int Soc Opt Eng |
Place of Publication | Proc. SPIE 7837, 78370N (2010) |
Publisher | SPIE |
Volume | 7837 |
ISBN (Print) | 9780819483553 |
DOIs | |
Publication status | Published - 2010 |
Event | Millimetre Wave and Terahertz Sensors and Technology III - Toulouse Duration: 1 Jul 2010 → … |
Conference
Conference | Millimetre Wave and Terahertz Sensors and Technology III |
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City | Toulouse |
Period | 1/07/10 → … |
Keywords
- Calibration
- Imagers
- Millimetre wave
- Passive
- Temperature standard