Temporal, Spatial, and Compositional Variability of the Infrared Signature of Objects

The property of dynamic variability of natural and technical objects has been studied.It is noted that structural objects made of different materials have a dynamic, i.e., time-dependent infrared signature, which is caused by the difference in heating and cooling rates of various materials.An optimization problem for minimizing the infrared signature of complex objects made of different materials has been formulated.It is shown that the dynamic infrared signature of composite objects heated to a certain temperature can be minimized if the cooling rate of the parts follows an exponential law that is logarithmically inversely proportional to the range of their temperature change.