傅里叶变换红外光谱测量热气体温度新方法初步研究

详细地讨论了分子转振光谱理论，总结了影响分子转振光谱结构和强度分布的因素，得知各谱线相对光谱强度(即归一化光谱)只与温度有关，其分布结构与温度一一对应。根据这种特性，文章提出了一种利用傅里叶变换红外光谱测量热气体温度的新方法。从HITRAN标准数据库中提取数据建立了一个测温数据库，并用4个不同温度的实测光谱数据对建立的测温数据库进行定标和检验。用定标后的测温数据库所得的测量温度与实测温度吻合得非常好。与目前常用的两种遥感测温方法(分子发射基带最大强度光谱测温法，分子转振光谱测温法)相比，该方法的优点是：物理过程简单，容易计算，精度高，是一种简单实用的方法。

Initial Study of a New Method for Measuring the Temperature of Hot Gas by FTIR Spectrometry

The present paper analyzed the molecular spectra theory detailedly and summarized the factors affecting the structure and intensity-distribution of molecular rotation-vibration spectra.The authors knew that every spectral line's relative intensity is only related to external temperature.According to this conclusion.The authors showed a new method for measuring the temperature of hot gas by FTIR spectrometry.The authors established a database for measuring the temperature-database using the database of HITRAN.The authors calibrated and validated the database using four experimental spectral data at different temperatures.After calibration,the result was very good.Compared with molecular rotation-vibration emission spectra method and maximum spectral line intensity method,this method has many advantages:simple physical-contents,easy calculation(done by a C program),high precision etc.It was a simple and applied method.