地面装备红外辐射测量不确定度分析研究

Research on Uncertainty Analysis of Ground Equipment Infrared Radiation Measurement

目的分析评价复杂背景环境下地面装备红外辐射成像特性的测量精度。方法基于红外辐射成像测量与定标原理,全面分析复杂环境下地面目标动态红外辐射成像测量中由设备性能、环境干扰、操作参数设置及相对运动等所引入的8项误差因素。采用校准黑体与被测目标等距离同视场同步标定测量方法,基于试验方法评定各测量不确定度因子,构建地面装备红外辐射表观温度测量不确定度评定模型。结果在置信概率为95%的条件下,典型地面车辆目标在静态和动态红外辐射表观温度测量不确定度分别为1.54℃和2.60℃。结论形成的基于红外热像仪的复杂背景环境下地面车辆目标红外辐射成像精确度的表征与评价方法,对于地面装备红外辐射特性精确测量与红外隐身伪装性能准确评估研究具有重要参考意义。

This paper is aimed at analyzing and evaluating the measurement accuracy of infrared radiation imaging characteristics of ground targets in a complex background environment based on the principle of infrared radiation imaging measurement and calibration.In this paper,eight error factors in dynamic infrared radiation imaging measurement of ground target in complex environment are analyzed,which result from equipment performance,environmental interference,operation parameter setting and relative motion.The error factors of ground target dynamic infrared radiation imaging measurement in complex environment are analyzed.The calibration blackbody and the measured target are simultaneously calibrated at the same distance and field of view.The measurement uncertainty factors are evaluated based on the test method,and the uncertainty evaluation model of infrared radiation apparent temperature measurement for ground equipment is established.Through the analysis,under the condition of 95%confidence probability,the measurement uncertainty of static and dynamic infrared radiation apparent temperature of typical ground vehicle target is 1.60℃and 2.64℃respectively.The characterization and evaluation method of infrared radiation imaging accuracy of ground vehicle target in a complex background environment based on infrared thermal imager is formed.It has an reference significance for accurate measurement of infrared radiation characteristics of ground equipment and accurate evaluation of infrared camouflage performance.