The monitoring of the solar spectral irradiance has important scientific significance and application value. This paper describes the principle, structure and performance of the UV-VUV solar spectrometer. The calibration principle and the calibration method of the spectral irradiance responsiveness are emphatically discussed, based on synchrotron radiation. The spectral irradiance responsiveness calibration of UV-VUV solar spectrometer in the 165 nm–320 nm spectral range is realized under vacuum environment with PTB transfer standard deuterium lamp as standard source. The results of the calibration are achieved, factors affecting the accuracy of the calibration are analyzed. The synthesized uncertainty of the calibration is 5.1 %.

太阳光谱辐照度的监测具有重要的科学意义和应用价值。本文介绍了紫外-紫外-紫外光谱仪的原理，结构和性能。基于同步加速器辐射，着重讨论了光谱辐照度响应度的校准原理和校准方法。在真空环境下，以PTB转移标准氘灯为标准源，可以实现165-320 nm光谱范围内UV-VUV太阳光谱仪的光谱辐照度响应度校准。获得校准结果，分析影响校准准确性的因素。校准的综合不确定度为5.1％。