微观能量分析气动光学效应时变误差的方法  

Micro-energy analysis method for time-varying error of aero-optical effects

作　　者：杨博[1] 于贺 樊子辰 YANG Bo;YU He;FAN Zichen(School of Astronautics,Beihang University,Beijing 100083,China;Beijing Institute of Control and Electronic Technology,Beijing 100038,China)

机构地区：[1]北京航空航天大学宇航学院,北京100083 [2]北京控制与电子技术研究所,北京100038

出　　处：《航空学报》2024年第4期114-127,共14页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(61973018);国家国防预研基金(JCKY2016601C005);中国空间智能控制实验室基金(ZDSYS-2018-03)。

摘　　要：针对高超声速飞行器在大气层内飞行过程中采用自主天文导航时,气动光学效应导致的光学传感器成像畸变严重干扰导航精度的问题,提出一种在微观能量变化机制层面探究气动光学效应时变误差的方法。该方法基于光子传输理论分析光子与湍流分子的相互作用机制,建立光子在高速流场中的传输模型,对光子在湍流传输过程中的能量分布进行统计。通过建立微观光子体系下的气动光学效应评价函数,得到气动光学效应的时变误差描述,统一了微观能量分析与宏观几何光学之间的关系,利用光子微观方法进行数值仿真分析,并将仿真结果与风洞试验结果进行了对比,为高超声速飞行器气动光学效应的研究提供了新的研究思路。Imaging distortion of optical sensors caused by the aero-optical effects seriously interferes with the naviga⁃tion accuracy during atmospheric flight of hypersonic vehicles with autonomous celestial navigation.To address this problem,we propose a method to explore the time-varying error of the aero-optical effect at the level of micro-energy change mechanism.This method analyzes the interaction mechanism between photons and turbulent molecules based on the photon transport theory,establishes the photon transport model in the high-speed flow field,and calcu⁃lates the energy distribution of photons in the turbulent transport process.By establishing the aero-optical effect evalu⁃ation function in the micro-photon system,we obtain the time-varying error description of the aero-optical effect,unify the relationship between the micro-energy analysis and the macro-geometric optics,and carry out comparative verifi⁃cation through numerical simulation analysis and wind tunnel test results,thereby providing a new perspective for the research on the aero-optical effect of hypersonic vehicles.

关 键 词：高超声速飞行器 气动光学效应 光子传输 微观能量分析 时变误差 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]