Method for modeling detection of camouflaged targets

摘要

The methods for determining the probability of detection of a thermally camouflaged target at various ranges by the sensor includes determining an “inherent” temperature difference, ΔT_RSS, between the target and its immediate surroundings. Once ΔT_RSS is determined, a scaled N₅₀ cycle criterion, or the number of resolvable cycles needed by the sensor for a fifty percent probability of detection, is determined according to the relationship N₅₀=A/(ΔT_RSS)^B+C, where A, B and C are constants that are predetermined according to whether the immediate surroundings are of a woodland or a littoral nature. The scaled N₅₀ cycle criterion is then used in an empirical Target Transfer Probability Function (TTPF) defined by P=(N/N₅₀)^E/(1+(N/N₅₀)^E), where E=2.7+0.7(N/N₅₀), in order to determine the probability of detection of the thermally camouflaged target.