Aerospace Instrument-Making Annotation << Back On Indirect Certification of a Thermal Imaging Devices for Range Through Their Physical Simulation Ovsyannikov V.A., Ovsyannikov Ya.V. A scientifically based methodology is proposed for obtaining a statistically reliable predictive estimate of the range of thermal imaging devices (TID) when detecting and recognizing a test object through their physical simulation – using TID control with parameters different from those of the simulated TID. At the same time, the maximum value of the lower limit of the confidence interval (lower estimate) is achieved for the desired range of the TID with a sufficiently high reliability of the results of fi eld tests of the TID control and their fixed volume, limited by the number of expert operators involved. The methodology takes into account the operation of the TID in both noise-limited and contrastlimited mode, includes recalculation of the test results of the TID control for normalized weather conditions and radiation contrast of the test object and provides the possibility of comparing estimates of the TID range of domestic and foreign production. An example of the practical implementation of the methodology is given. Keywords: thermal imaging device, physical simulation. DOI: 10.25791/aviakosmos.12.2025.1526 Pp. 49-63.