In this work a spectral designed coating from SPECTROGON is evaluated. Spectral design in this case means that the coating has a reflectivity equal to one at 3-5 and 8-12 microns were sensors operate and a much lower reflectivity in the other wave length regions. Three boxes are evaluated: one metallic, one black-body and one with a spectral designed surface, all with a 15 W radiator inside the box. It is shown that the box with the spectral designed surface can combine the two good characteristics of the other boxes: low signature from the metallic box and reasonable inside temperature from the black-body box. The measurements were verified with calculations using RadThermIR.
Anna Pohl, Jan Fagerström, Hans Kariis, Roland Lindell, Tomas Hallberg, and Herman Högström, "Camouflage in thermal IR: spectral design," Proc. SPIE 9997, Target and Background Signatures II, 99970C (Presented at SPIE Security + Defence: September 26, 2016; Published: 24 October 2016); https://doi.org/10.1117/12.2241174.
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