Peculiarities and results of infrared signature measurement on 4-slot disk target and absolutely black body at wavelengths 7–14 μm

Abstract

Object and purpose of research. This paper discusses infrared signature measurements for test targets. The purpose of the study was to control and investigate infrared signature and its dynamics in different conditions of its generation by a simulator of an absolutely black body. Subject matter and methods. The measurement was performed with a set of automatically rotating 4-slot targets. From one side, these targets were subject to the radiation from an absolutely black body and a 7–14 μm IR thermal imager. On the other side, the targets had the instrumentation that recorded infrared signals. Main results. The study yielded infrared signature estimates for six different targets. It also yielded the expressions linking the parameters of the target field, the field around target slots and the initial field generated by the absolutely black body. It was also possible to obtain the parameters that determine the efficiency of IR imager in the detection of targets of different size. The study established the boundaries for 50 % loss of target structure detection and investigated the methods that maintain the applicability of this technique. Conclusion. The study yielded the data about acceptable resolution parameters of the IR imager, as well as the methods for maintaining its capabilities and further development paths for this control technology based on test targets.