第6卷第1期2023年1月飞控与探测FlightControl&DetectionVol.6No.1January2023低温环境下红外辐射标定技术研究*赵海涛1,李士刚2(1.海装上海局驻南京地区第一军事代表室·南京·210000;2.海装驻上海地区第六军事代表室·上海·201109)摘要:低温环境下,红外场景生成装置的标定是对低温红外目标特征评估和精准探测的前提。通过标定过程中热辐射-光子-电子转换测量的传递途径,建立基于红外热像仪灰度的低温标定模型,采用最小二乘法进行拟合,得到模型中的辐射出射度响应函数和系统固有偏置。搭建了低温标定实验装置,根据热像仪对低温辐射源不同辐射出射度的测量结果,得到标定方程。分析了理论值和实际测量值的误差,在低温黑体辐射出射度9.79W/m2处,热像仪的辐射出射度误差最大,为-0.17W/m2,此时的灰度误差为-9.91DN。关键词:低温;标定;红外场景生成装置;误差分析中图分类号:TN215文献标志码:A文章编号:2096-5974(2023)01-0075-05ResearchonInfraredRadiationCalibrationTechnologyinLowTemperatureEnvironmentZHAOHaitao1,LIShigang2(1.TheFirstMilitaryRepresentativeOfficeoftheNavalEquipmentShanghaiBureauinNanjing,Nanjing210000;2.SixthMilitaryRepresentativeOfficeoftheNavalEquipmentDepartmentinShanghai,Shanghai201109)Abstract:Thecalibrationofinfraredscenegenerationdevicesinlowtemperatureenvironmentisthepremiseoflowtemperatureinfraredtargetfeatureevaluationandaccuratedetection.Throughthetransmissionpathofthermalra-diation-photon-electronconversionmeasurementinthecalibrationprocess,alow-temperaturecalibrationmodelbasedonthegrayscaleoftheinfraredthermalimagerisestablished,andtheleastsquaresmethodisusedtofitit,andtheradiationejectionresponsefunctionandtheinherentbiasofthesysteminthemodelareobtained.Alow-temperaturecalibrationexperimentaldeviceissetup,andthecalibrationequationisobtainedaccordingtothemeas-urementresultsofdifferentradiationemissiondegreesoflow-temperatureradiationsourcesbythethermalimager.Theerrorbetweenthetheoreticalvalueandtheactualmeasuredvalueisanalyzed.Atthelowtemperatureblackbodyradiationexitdegreeof9.79W/m2,theradiationemissionerrorofthethermalimageristhelargest(-0.17W/m2),andthegrayscaleerroratthistimeis-9.91DN.Keywords:lowtemperat...
