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提高大气吸收光谱测量分辨率的新方法
引用本文:魏合理,邬承就,马志军,袁怿谦,曹百灵,龚知本.提高大气吸收光谱测量分辨率的新方法[J].光学学报,2002,22(2).
作者姓名:魏合理  邬承就  马志军  袁怿谦  曹百灵  龚知本
作者单位:中国科学院安徽光学精密机械研究所国家863计划大气光学重点实验室,合肥,230031
基金项目:国家高技术发展计划激光技术领域资助课题
摘    要:在仪器函数和吸收线型已知的情况下 ,提出了一种非线性拟合退卷积法 ,用于提高气体吸收测量的光谱分辨率。数值模拟和实际应用都表明 :该方法用于室内气体吸收光谱的测量 ,在保持吸收线型不变的情况下 ,可以显著地提高测量的光谱分辨率 ,降低测量噪声。将该方法用于怀特池中模拟大气吸收光谱测量 ,减小了激光线宽对测量结果的影响 ,获得了比较理想的结果。

关 键 词:非线性拟合退卷积  气体吸收光谱  光谱分辨率提高

A New Method for Improving the Measurement Spectral Resolution of Atmospheric Absorption Spectra
Wei Heli,Wu Chengjiu,Ma Zhijun,Yuan Yiqian,Cao Bailing,Gong Zhiben.A New Method for Improving the Measurement Spectral Resolution of Atmospheric Absorption Spectra[J].Acta Optica Sinica,2002,22(2).
Authors:Wei Heli  Wu Chengjiu  Ma Zhijun  Yuan Yiqian  Cao Bailing  Gong Zhiben
Abstract:A nonlinear-fitting-deconvolution method is put forward for improving the measurement spectral resolution of gas absorption spectra when the instruments function and the absorption line-shape are previously known. The simulated results and experiments show that the method can obviously enhance the spectral resolution and decrease the experiment noise of absorption spectra by gases in the laboratory. The method was used to the measurement of high-resolution atmospheric absorption-spectra in the White cell and the results are satisfactory, the effect of laser line-width was decreased.
Keywords:nonlinear-fitting-deconvolution  absorption spectra by gases  enhancement of spectral resolution
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