红外成像系统对点目标动态探测概率分析

检测概率、虚警概率和信噪比是红外点目标检测系统的3个核心指标，本文在恒虚警检测准则下，分析了红外点目标单帧检测（单一门限检测）的检测概率、虚警概率和信噪比三者之间的关系。重点分析计算了采用多帧累积检测的双门限检测方法时，第二门限的选取策略，实现了在不提高对系统信噪比要求的前提下，提高检测概率、降低虚警概率的目的，解决了威胁度大、误报和漏报代价高的高价值目标的检测问题。

An analysis on dynamic detecting probability of IR imaging system for point targets

The probability of detection, probability of false alarm, and signal-to-noise ratio (SNR) are three core indicators of the detection system for infrared point targets. Under the criterion of constant false alarm detection, this study analyzed the relationship between probability of detection, probability of false alarm, and signal-to-noise ratio(SNR) using single frame detection method, also called single threshold detection for infrared point target systems. This study focused on the analysis and calculation of the selection strategy of the second threshold under a multi-frame accumulation detection method (called the double threshold detection algorithm) and achieved a higher probability of detection and lower probability of false alarm with a lower SNR. A good solution was also found for the problem of detecting high-value targets with high threat and cost for false and missed alarms.