Line-of-sight tunable-diode-laser absorption spectroscopy（LOS-TDLAS） with multiple absorption lines is introduced for non-uniform temperature measurement. Temperature binning method combined with Gauss–Seidel itera...Line-of-sight tunable-diode-laser absorption spectroscopy（LOS-TDLAS） with multiple absorption lines is introduced for non-uniform temperature measurement. Temperature binning method combined with Gauss–Seidel iteration method is used to measure temperature probability distribution function（PDF） along the line-of-sight（LOS）. Through 100 simulated measurements, the variation of measurement accuracy is investigated with the number of absorption lines, the number of temperature bins and the magnitude of temperature non-uniformity. A field model with 2-T temperature distribution and15 well-selected absorption lines are used for the simulation study. The Gauss–Seidel iteration method is discussed for its reliability. The investigation result about the variation of measurement accuracy with the number of temperature bins is different from the previous research results.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant No.61108034)the Young Scientists Fund of the National Natural Science Foundation of China(Grant No.61205151)
文摘Line-of-sight tunable-diode-laser absorption spectroscopy（LOS-TDLAS） with multiple absorption lines is introduced for non-uniform temperature measurement. Temperature binning method combined with Gauss–Seidel iteration method is used to measure temperature probability distribution function（PDF） along the line-of-sight（LOS）. Through 100 simulated measurements, the variation of measurement accuracy is investigated with the number of absorption lines, the number of temperature bins and the magnitude of temperature non-uniformity. A field model with 2-T temperature distribution and15 well-selected absorption lines are used for the simulation study. The Gauss–Seidel iteration method is discussed for its reliability. The investigation result about the variation of measurement accuracy with the number of temperature bins is different from the previous research results.
