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Proceedings Paper

Testing Thermal Imaging Systems
Author(s): T. L. Williams; R. Hunt
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Paper Abstract

The design and performance of equipment for assessing complete thermal imaging systems is described. The equipment consists of a source/target unit plus control electronics which can be used for measuring the MRTD or MDTD of thermal imager systems. The system can achieve a temperature-difference resolution of better than 0.01°C and response times of the order of 10-15 seconds. Facilities are available for generating linear temperature ramps and for remote changing of targets. A scanning microphotometer using a CCD array has also been developed for analysing the output of the display of a Thermal imager. In conjunction with the source/target unit it can be used for measuring the signal transfer function (SiTF) and MTF of the thermal imageing system. A minicomputer is used for processing the data from the microphotometer. A radiometer is required to calibrate the test equipment and the design of a suitable unit which operates from the same minicomputer as the microphotometer, is outlined briefly.

Paper Details

Date Published: 29 October 1981
PDF: 7 pages
Proc. SPIE 0274, Assessment of Imaging Systems II, (29 October 1981); doi: 10.1117/12.931860
Show Author Affiliations
T. L. Williams, Sira Institute Limited (United Kingdom)
R. Hunt, Sira Institute Limited (United Kingdom)


Published in SPIE Proceedings Vol. 0274:
Assessment of Imaging Systems II
Thomas L. Williams, Editor(s)

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