CAJ | 학술논문

为解决高速飞行器红外辐射特性研究中高温气体辐射参数计算问题，在转动平滑谱带（smeared rotational band ，SRB）模型的假设下，首次提出基于贝叶斯估计的跳转马尔科夫链蒙特卡罗（reversible jump Markov chain monte carlo ，RJMCMC）方法来计算高温流场中气体组分红外光谱物性参数。仿真计算和实验测量表明，仅需很少的先验知识，且不需要相关跃迁系数，该方法可以很好的估计主要振动跃迁带的位置，所提取的S RB模型参数的变化规律与S RB理论模型结果一致，利用拟合参数计算得到不同温度下谱带积分发射和吸收系数与逐线计算的结果非常近似。
위해결고속비행기홍외복사특성연구중고온기체복사삼수계산문제，재전동평활보대（smeared rotational band ，SRB）모형적가설하，수차제출기우패협사고계적도전마이과부련몽특잡라（reversible jump Markov chain monte carlo ，RJMCMC）방법래계산고온류장중기체조분홍외광보물성삼수。방진계산화실험측량표명，부수흔소적선험지식，차불수요상관약천계수，해방법가이흔호적고계주요진동약천대적위치，소제취적S RB모형삼수적변화규률여S RB이론모형결과일치，이용의합삼수계산득도불동온도하보대적분발사화흡수계수여축선계산적결과비상근사。
Infrared radiative parameters under high temperature was calculated using RJMCMC method under Bayesian frame‐work presumed Smeared Rotational Band model (SRB) ,in order to solve the problem of radiation calculation for high speed vehi‐cle infrared signature research .The process of calculation does not need any database of parameter or priors about transition . The experiment from simulation and measured data demonstrates that the position of vibrational transition have been estimated precisely .Simultaneously ,the change law of parameter estimation was consistent with theoretic SRB model ,from which the in‐tegration of radiative parameters under different temperature approximated the line by line calculation (LBL) result very well .