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.

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.