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Comparison of Wavelength Modulation and Direct Absorption Spectroscopy for Measurements of Gas Temperature in a Scramjet Combustor

机译：波长调制和直接吸收光谱法在超燃冲压燃烧器中测量气体温度的比较

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A diode laser absorption sensor which probes four spectral features of water vapor in the near infrared region to infer gas temperature near the exit of a scramjet combustor is presented. The sensor is configured to allow comparison of direct absorption and wavelength modulation spectroscopy. For the wavelength modulation measurements, a hybrid demultiplexer combines wavelength and frequency demultiplexing. Measurements using both spectroscopic techniques in the scramjet combustor under similar conditions are compared to show superior noise rejection and a doubling of the signal-to-noise ratio of the weakest absorbing feature with WMS-2f. Temperature results from a scramjet autoignition sequence and unstart event show the utility of the sensor for scramjet engine characterization and refinement.

机译：提出了一种二极管激光吸收传感器，该传感器探测近红外区域中水蒸气的四个光谱特征，以推断超燃冲压燃烧器出口附近的气体温度。传感器配置为可以比较直接吸收光谱和波长调制光谱。对于波长调制测量，混合解复用器将波长和频率解复用结合在一起。比较了在类似条件下在超燃冲压燃烧器中使用这两种光谱技术进行的测量，结果显示出卓越的噪声抑制能力以及WMS-2f吸收能力最弱的特征的信噪比增加了一倍。超燃冲压发动机自动点火序列和未启动事件的温度结果表明，该传感器可用于超燃冲压发动机的表征和改进。

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来源
《US Combustion Meeting; 20070325-28; San Diego,CA(US)》|2007年|P.2804-2814|共11页
会议地点 San DiegoCA(US)
作者
G.B. Rieker; J.B. Jeffries; R.K. Hanson; T. Mathur; C.D. Carter; M. R. Gruber;
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作者单位

Department of Mechanical Engineering, Stanford University, Stanford, California 94305, USA;

Innovative Scientific Solutions, Inc, Dayton, Ohio 45433, USA;

Air Force Research Laboratory (AFRL/PRAS), Dayton, Ohio 45433, USA;

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正文语种 eng
中图分类理论;
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1. Scanned-wavelength-modulation spectroscopy near 2.5 μm for H_2O and temperature in a hydrocarbon-fueled scramjet combustor [J] . C. S. Goldenstein, I. A. Schultz, R. M. Spearrin, Applied physics . 2014,第3期

机译：碳氢燃料超燃燃烧室中H_2O和温度的扫描波长调制光谱在2.5μm附近
2. Temperature Measurements in a Gas-Turbine-Combustor Sector Rig Using Swept-Wavelength Absorption Spectroscopy [J] . Laura A. Kranendonk, Andrew W. Caswell, Christopher L. Hagen, Journal of propulsion and power . 2009,第4期

机译：使用扫掠波长吸收光谱法测量燃气轮机燃烧室扇段中的温度
3. Temperature Measurements in a Gas-Turbine-Combustor Sector Rig Using Swept-Wavelength Absorption Spectroscopy [J] . Laura Ann Kranendonk, Andrew W. Caswell, Christopher L. Hagen, Journal of Propulsion and Power . 2009,第4期

机译：使用扫掠波长吸收光谱法测量燃气轮机燃烧室扇段中的温度
4. Simultaneous temperature, H2O concentration and pressure measurement in a scramjet combustor with combined operation mode using wavelength modulation spectroscopy [C] . Wei Rao, Ming Wen, Mingyuan Xin, International Symposium on Laser Interaction with Matte . 2019

机译：采用波长调制光谱法的同时温度，H2O浓度和压力测量，具有组合操作模式的组合操作模式
5. Wavelength-modulation spectroscopy for measurements of gas temperature and concentration in harsh environments. [D] . Rieker, Gregory Brian. 2009

机译：波长调制光谱仪用于在恶劣环境下测量气体温度和浓度。
6. A Wide-Range and Calibration-Free Spectrometer Which Combines Wavelength Modulation and Direct Absorption Spectroscopy with Cavity Ringdown Spectroscopy [O] . Zhen Wang, Yanjun Du, Yanjun Ding, 2020

机译：结合波长调制和直接吸收光谱与腔衰荡光谱的宽范围免校准光谱仪
7. Measurement of temperature, velocity and water vapor concentration in a scramjet combustor based on near-infrared diode laser absorption [O] . Fei Li, XiLong Yu, Hongbin Gu, 2011

机译：基于近红外二极管激光吸收的跳闸燃烧器温度，速度和水蒸气浓度的测量
8. Diode Laser Sensor for Gas Temperature and H2O Concentration in a Scramjet Combustor Using Wavelength Modulation Spectroscopy (Postprint) [R] . Rieker, G. B. , Li, J. T. , Jeffries, J. B. , 2005

机译：采用波长调制光谱仪的超声波激光传感器用于超燃冲压发动机燃气温度和H2O浓度（postprint）

Comparison of Wavelength Modulation and Direct Absorption Spectroscopy for Measurements of Gas Temperature in a Scramjet Combustor

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