紫外臭氧垂直探测仪波长精度分析与波长定标新方法的研究

Analysis of wavelength accuracy and study on new wavelength calibration method for ultraviolet ozone vertical probe

对紫外臭氧垂直探测仪波长扫描机构中的凸轮廓线、摆杆长度和齿轮组传动等误差,及受温度因素对波长精度影响进行分析,得出理论波长精度为±0.035nm。地面采用C-T型1.5m单色仪和标准氘灯相结合的新方法,对大气臭氧吸收12条波长及160～400nm光谱进行波长定标,分析定标的不确定度为±0.026nm。通过在轨波长测试的结果表明:仪器的波长精度为±0.023nm,与理论分析值相符,验证了波长精度的理论分析、定标方法和不确定度计算的正确性。

The errors of cam profile,swing link lengthen and drive gear mechanism in the scanning mechanism of ultraviolet ozone vertical probe are analyzed,and the effect of ambient temperature factor on wavelength accuracy is also analyzed.Analyses conclude that the theoretical wavelength accuracy is ±0.035 nm.On ground,a new calibration method is proposed,which adopts a high accuracy C-T type 1.5 m monochromator and a standard deuterium lamp.Using the proposed method,the 12 ozone absorbing spectrums and 160～400 nm continuous spectrums are calibrated.The calibration uncertainty is ±0.026 nm.On orbit experimental results indicate that the wavelength accuracy of the ultraviolet ozone vertical probe is ±0.023 nm,which coincides with the theoretical analysis value.Study results prove the correctness of the theoretically analyzed wavelength accuracy,wavelength calibration method and uncertainty calculation.