机构地区: 哈尔滨工业大学
出 处: 《红外与激光工程》 2007年第z2期177-181,共5页
摘 要: 针对凝视型红外成像系统点目标探测,基于线性系统点扩散函数理论,对传统的探测性能分析方法进行修正,建立实际成像情况下信噪比与作用距离的数学模型。结合非周期传递函数与目标尺寸函数,分析并比较理想和实际成像情况下的点目标探测性能,对模拟结果进行精度分析。分析结果表明,对于典型的红外探测系统,点扩散函数因素的影响不可忽略。 As a point target detection of staring infrared imaging system is considered,a traditional analysis method of detection performance is modified and a mathematical model on signal-to-noise ratio and maximum detection range in actual imaging situation based on linear PSF theory.Point target detection performance in actual and ideal situation and the precision of simulated results are analyzed based on aperiodic transfer function and target size function.As typical infrared imaging system is concerned,the effect of PSF cannot be ignored in terms of analysis result.
关 键 词: 点目标 点扩散函数 光学响应指数 非周期传递函数 目标尺寸函数
领 域: [电子电信]