项目名称: 基于参量下转换的精细光谱定标方法及其应用研究
项目编号: No.11204318
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 物理学I
项目作者: 李健军
作者单位: 中国科学院合肥物质科学研究院
项目金额: 25万元
中文摘要: 光辐射传感器定标对研究传感器性能变化、大气参数反演、地球收支平衡、全球气候变化、海洋生产力评估等方面的科学研究起到非常重要的作用。为了克服传统的基于标准传递探测器和基于辐射源方法对初级标准和标准传递过程的依赖性,本项目研究"无标准传递"的参量下转换定标新方法,利用参量下转换产生的连续可调谐相关光子光源,对光辐射遥感器进行系统级、精细光谱响应定标,可以获得仪器的中心波长、带宽和光谱响应度等核心定标参数。解决基于参量下转换过程连续相关光子对制备、精细光谱空间分离和符合探测、推广应用到模型探测器定标的相关函数测量等关键科学技术问题。本项目开展基于参量下转换效应在400-1100nm波段的辐射定标,预计辐射定标不确定度优于0.5%,光谱定标精度优于0.1nm。 本项目将利用申请者已具有的相关光子定标基础,发展自身绝对的、"无标准传递"的定标方法。其研究成果将有利于探索光辐射定标和和应用的新途径。
中文关键词: 遥感;相关光子;辐射定标;测量不确定度;
英文摘要: Calibration of optical radiation sensor has an important role for researching sensor's performance change, atmosphere parameter retrieval, globle unbalanced, global climate change, ocean production evaluation, etc., In order to overcome severe dependence on primary standard and transferring standard about methods of standard detector and standard source, This item will research new technology of no standard transferring, using continious and tunable correlated photons sources produced by parametric downconversion,optical radiation sensor will be systemically and fine calbrated.the major calibration parameter will be obtained such as center wavelength, bandwidth,and spectral responsivity etc.,The key technology problem will be solved, such as production of continue and correlated photons based on parametric downconversion, the experiment of space segregation of fine spectra and concidence detection,correlation function measurement used for analog detectors etc.This item will research optical radiation calibration range from 400nm to 1100nm,the calibration uncertainty will be estimated by 0.5%,the spectral calibration uncertainty is exceed 0.1nm. This item will use applicant's calibration foundation of correlated photons, and develop absolute, no standard transferring calibration method. Its research fruits will
英文关键词: remote sensing;correlated photons;radiometric calibration;measurement uncertainty;