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为验证CO2探测仪光学设计的合理性和可行性,采用单通道模拟样机,利用太阳光加漫反射板模式对大气光谱进行实验测试,并在实验室对单通道模拟样机进行光谱定标。利用光谱配准算法对两种方法得出的谱线位置进行匹配计算,结果表明:在吸收线深度稳定位置的配准峰值点偏差小于0.006 nm,满足算法的精度要求。此种方法不仅验证了匹配算法的有效性,也验证了光学系统设计的合理性和可行性,为以后的光谱仪设计提供了理论与实验数据。
In order to verify the rationality and feasibility of the optical design of the CO2 detector, a single-channel simulation prototype was used to experimentally measure the atmospheric spectrum by using sunlight and diffuse reflectance spectroscopy. The single-channel simulation prototype was spectrum-calibrated in the laboratory. Spectral registration algorithm is used to match the spectral line positions obtained by the two methods. The results show that the deviation of the registered peak in the stable position of the absorption line is less than 0.006 nm, which meets the accuracy requirements of the algorithm. This method not only verifies the validity of the matching algorithm, but also verifies the rationality and feasibility of optical system design. It provides theoretical and experimental data for the future design of spectrometer.