摘要
红外数据作为信息化数据库的重要组成部分,在夜视侦察、武器制导、远程预警等方面具有广泛应用。红外辐射特性测量系统在环境温度变化时会产生温漂,从而导致目标的红外反演精度受到较大影响。针对该问题,本文提出一种基于环境温度自适应修正的内外联合定标方法。通过自适应插值的方式对环境温度变化的影响进行修正。以高精度面源黑体作为目标进行辐射反演测量试验。实验结果表明:最小误差为6.82%、最大误差为10.21%。同时对水上动态目标开展辐射特性反演实验,得到高置信度的实测目标辐射特性数据。通过黑体以及水上动态目标的测量试验可以得到:本方法可以在海洋气候复杂环境下实现环境温度变化对辐射反演精度的影响修正。验证了所提出的定标算法的有效性,同时可以基于修正参数进行红外系统环境温度敏感性的有效评估测试。
As an important component of the information database,infrared data has been extensive used in night vision,weapon guidance,long-range early warning systems and more.Shipborne infrared radiation characteristic measuring systems work in the marine environment,where the variation in temperature and humidity is vast.In view of the fact that variation in ambient temperature greatly affects the measuring system,this paper presents an internal and external united calibration method based on ambient temperature self-adaptive correction.It corrects temperature influence through self-adaptive interpolation,thus confirming the validity of the proposed measuring system for sensibility and responsive characteristics of external targets.Radiant calibration in different infrared wavebands has been implemented by the measuring system,serial temperatures have been set in each integrating time to calibrate and fit,and the method's effectiveness has been determined by error statistics.Meanwhile,the radiation characteristics of high-precision blackbody and aquatic targets are inversed.As a result,the minimum and the maximum errors obtained for blackbody measuring precision were 6.82%and 10.21%,respectively.The high confidence coefficient for measured radiant inversion value verifies the effectiveness and application prospects of the calibration method presented in this paper.
作者
孙晓东
陈德明
杨国庆
苏龑
赵李健
SUN Xiao-dong;CHEN De-ming;YANG Guo-qing;SU Yan;ZHAO Li-jian(Satellite Maritime Measurement and Control Department of China,Jiangyin 214431,China;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)
基金
国家自然科学基金(No.62305337)。
关键词
自适应
辐射定标
特性反演
船载系统
self-adaptive
radiant calibration
characteristic inversion
ship-borne system
作者简介
孙晓东(1991-),男,吉林敦化人,博士,中国卫星海上测控部工程师,2019年于陆军工程大学获得博士学位,研究方向光学测量与红外辐射特性处理技术。E-mail:xdsun199109@126.com;杨国庆(1992-),男,吉林长春人,博士,中国科学院长春光学精密机械与物理研究所工程师,2020年于中国科学院大学获得博士学位,研究方向为红外辐射特性测量系统设计与数据处理、目标特征提取与识别技术。E-mail:yangguoqing2022@163.com。
