Robust method for calculating temperature, pressure, and absorber mole fraction from broadband spectra.
Robust method for calculating temperature, pressure, and absorber mole fraction from broadband spectra.
复制标题
从宽带光谱计算温度、压力和吸收剂摩尔分数的稳健方法。
作者：
L. Kranendonk;A. Caswell;S. Sanders
描述了一种从测量的吸收光谱(吸收系数对光学频率)计算温度、摩尔分数和压力的稳健方法。该方法的关键是平滑、微分、谱轴弯曲和线性最小二乘拟合。当光谱覆盖目标分子的整个旋转分支时，该方法效果最好，但原则上它适用于任何光谱范围。给出的例子假定测量光谱在7246.4-7518.8厘米(-1)范围内，包括H(2)O的v(1)+v(3)带的R分支；然而，这些技术应该适用于大多数测量光谱。
A robust method is described for calculating temperature, mole fraction, and pressure from measured absorption spectra (absorption coefficients versus optical frequency). The key components to the method are smoothing, differentiation, spectral axis warping, and linear least-squares fitting. The method works best when spectra span a full rotational branch of the target molecule, but in principle it works for any spectral span. The examples presented assume a measured spectrum over the 7246.4-7518.8 cm(-1) range, which encompasses the R branch of the v(1)+v(3) band of H(2)O; however, the techniques should work for most measured spectra.