红外焦平面探测器输出图像信噪比计算和分析

Analysis of the Imaging Performance of an FPA Detector

推导了红外焦平面探测器输出图像信噪比的一般计算公式 ,并针对红外焦平面探测器在地面面目标自动识别系统中的具体应用 ,计算了其在不同天气情况下的成像信噪比。由计算结果可知 :采用高性能的焦平面探测器后 ,红外成像的图像信噪比非常高 ,即使在较恶劣的天气 (大雾 )情况下也可获取质量较好的红外图像 。

In this paper we deduce the formula of image's SNR which is based on infrared focal plane array (FPA) detector. Based on the information of various weather conditions, we calculate the SNR of image output from the FPA detector used in IR ATR system and get the conclusion that the FPA detector can output high quality images, which meet the need of IR ATR system, even in an adverse weather.