线列探测器非均匀性对点目标检测的影响  

Influence of Nonuniformity of Line Array Detector on Point Target Detection

作　　者：郭杰锋[1,2] 陈桂林[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院研究生院,北京100039

出　　处：《红外技术》2009年第2期103-106,共4页Infrared Technology

摘　　要：为了向点目标检测系统的非均匀性校正提供指标依据,从数学上推导并分析了线列探测器非均匀性对点目标检测的影响,同时提出了一种仿真实验方法,得到了非均匀性对点目标信噪比和检测概率的影响程度数据。实验结果表明,在信噪比小于3的情况下,非均匀性每增加10%,点目标信噪比下降约3.6%,检测概率平均下降约90.8%。在信噪比大于3的情况下,非均匀性每增加10%,点目标信噪比下降约3.5%,检测概率平均下降约34.8%。In order to provide indicators to nonuniformity correction in point target detection system, the influence of nonuniformity of line array detector on point target detection is mathematically derived and analyzed. A method of simulation experiment is presented. Experimental data of signal to noise ratio of point target and probability of detection impacted by different degrees ofnonuniformity is got. The results indicate that when signal to noise ratio is less than 3, each increase of 10% of nonuniformity will cause signal to noise ratio decrease 3.6% and probability of detection averagely decrease 90.8%. When signal to noise ratio is more than 3, each increase of 10% of nonuniformity will cause signal to noise ratio decrease 3.5% and probability of detection averagely decrease 34.8%.

关 键 词：非均匀性 点目标 检测 线列探测器 红外 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]