含光纤传像束耦合离散采样成像系统调制传递函数评价方法与测试技术研究

项目名称： 含光纤传像束耦合离散采样成像系统调制传递函数评价方法与测试技术研究

项目编号： No.61307114

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 何煦

作者单位： 中国科学院长春光学精密机械与物理研究所

项目金额： 22万元

中文摘要： 光电成像系统中加入光纤传像束可大幅改善仪器综合性能，由于存在具有多级耦合关系的离散采样光电元件，基于空间不变假设的傅里叶变换、级联相乘等经典算法推导与评价其调制传递函数存在适用性问题，造成耦合离散成像系统调制传递函数的评价与测试标准尚不统一，多级耦合离散系统传递函数计算与测试方法已经成为发展新概念光电成像技术急待解决的关键理论与技术问题。课题通过推导光强余弦分布光学信号经多级耦合离散采样光电元件传递后输出信号的光强分布函数，采用统计平均思想基于传递函数调制度定义建立系统调制传递函数解析表达式，揭示耦合离散成像系统调制传递函数与像元匹配精度、频域特性、元件制造误差等参数间的作用规律，探索耦合离散系统成像机理。希望获得高精度余弦光学信号发生、调制度实时测定等耦合离散系统传递函数测试的关键技术，为包含光纤传像束的新概念光电成像系统设计、制造、装调、成像质量评价提供理论与试验基础。

中文关键词： 面阵光纤传像束；耦合离散采样成像系统；耦合调制传递函数；像元耦合误差；光强余弦分部目标

英文摘要： Joining fiber-optic image bundles can improve the synthetically performance of the electro-optical imaging system significantly. However, for the reason that multiple discrete sampling optical-electro components with determined coupled relationship in the system，there are suitable problem to derivation and evaluation the Modulation transfer function (MTF) by classical algorithm such as Forier transform or cascade multiplication. For this reason, the characteristics and evaluation standard haven’t unified, which has become a key technology and theory restricting the development of new concept optical-electro imaging technology.Therefore, the topic will deduce the intensity distributed function of output signal transferred by multiple coupled discrete sampling optical-electro components from intensity cosine distribution as object function. The derivation based on the statistic average route to define the coupled Modulation transfer function. The study hope to establish analytical expression of MTF for coupled discrete system, which help to explore imaging principle of the system, and reveal the relationship of the coupling accuracy, frequency domain , components manufacturing error with the coupled MTF of coupled discrete imaging system. The topic expects to resolve the key technology such as the generation metho

英文关键词： Array fiber-optic image bundle；Coupled-discrete-sampling imaging system；Coupled modulation transfer function；Pixel coupling error；Optical intensity cosine segment optical target