背景杂波对红外成像系统性能的影响  

Impact of background clutter on IR imaging system performance

作　　者：张建奇[1] 何国经[1] 刘德连[1] 常洪花[1] 

机构地区：[1]西安电子科技大学技术物理学院,陕西西安710071

出　　处：《红外与激光工程》2008年第4期565-568,共4页Infrared and Laser Engineering

基　　金：国家自然科学基金资助项目(60777042);航空科学基金资助项目(20070181006)

摘　　要：结合红外成像系统的组成结构以及红外辐射信号的传递过程,给出了杂波的定义,即杂波是场景中包含的与目标信号相似的信号,同时分析了杂波的特征依赖性和相对性。基于杂波仅通过信号处理算法对目标信号产生影响的认识,给出了杂波影响下的系统探测性能模型,并与不考虑杂波时的系统探测性能模型进行对比,指出背景杂波导致的目标检测难度远远大于不考虑杂波的情况,系统的探测性能是目标、背景间均值、方差差异的复杂函数。According to the IR imaging system structure and the procedure of IR radiation transmission,the definition of background clutter was given,which was similar to the target signal in background. The two characteristics of background clutter were analyzed,which were feature-dependence and relativity. Background clutter had its impact on the target signal only through signal processing algorithm. The model of IR imaging system detection performance influenced by background clutter was obtained. Compared with the performance model without the consideration of background clutter,it is conclued that background clutter greatly enhance the difficulty of target detection. The system performance varies complexly with the difference between the targets and background in the mean values and variances.

关 键 词：背景杂波 红外成像系统 探测性能模型 

分 类 号：TN216[电子电信—物理电子学]