为了提高空间目标的红外辐射测量准确度, 提出了基于精确校准的红外标准星的红外辐射标校方法.测量不同大气质量处多颗具有较高光谱分辨率的红外标准星, 采用天文孔径测光法对望远镜拍星数据进行处理, 依据大气消光模型进行最小二乘线性拟合, 获得了测量系统的红外辐射响应率和大气消光.1.2 m望远镜上中波红外成像终端验证性实验结果表明, 该方法的恒星辐照度反演误差最大为16.28%.且该方法无需增加额外设备, 操作简单, 易于实现, 可随时对测量设备进行实时标校.对地基大口径望远镜的红外辐射测量具有一定的应用价值.

A method of calibration based on accurate Infrared standard stars was proposed for increasing infrared radiation measurement precision.By measuring a series of Infrared calibration stars at different air masses,the infrared radiation responsivity of measurement system and atmospheric extinction can be obtained simultaneously.The data were reduced with astronomical aperture photometry and least-squares fitting according to more thorough atmospheric extinction models.Validation experiments on the 1.2 m telescope′s infrared imaging terminal for the proposed method indicated that the maximum error of stellar irradiance inversion was 16.28%.Without additional calibration device,the proposed calibration method is simple and easy to implement.Real-time calibration of the telescope could be realized at any time.The proposed calibration method has important application value for infrared radiometry of large aperture ground-based telescopes.