Dynamic Characterization of Aero-Optical Effects and Imaging Variations in Hypersonic Flow Fields

IF 2.6 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2026-02-01 Epub Date: 2026-01-19 DOI:10.1109/JPHOT.2026.3655424

Zeqi Wang;Jian Chen;Yutang Wang;Dapeng Tian

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引用次数: 0

Abstract

With the advancement of hypersonic vehicle technology, aero-optical effects on airborne imaging have attracted considerable research attention. However, prior research has primarily focused on stable aberrations and the influence of hypersonic flow fields on aero-optical mechanisms under various boundary conditions, while the dynamic characteristics of these effects and aberrations remain comparatively underexplored. This study investigates the dynamic features of aero-optical effects by analyzing their spectral properties and aberration variations over varying exposure durations. The influence of changes in Mach number, altitude, and angle of attack on these dynamic characteristics is thoroughly examined. This study also assesses the temporal accumulation of aberrations in the image plane during exposure. The findings reveal that the average primary frequency of aberrations is notably higher than that of the aero-optical effects. Optimal image quality is achieved within an exposure duration of approximately 81–82% at a fixed altitude. In most instances, third-order polynomial linear regression effectively models image quality variations with increasing exposure durations, with fitted results yielding R

$^{2}$

$\geq$

0.85. This study offers practical insights for improving imaging system design and exposure control to mitigate dynamic aero-optical distortions in hypersonic applications.

查看原文本刊更多论文

高超声速流场气动光学效应和成像变化的动态特性

随着高超声速飞行器技术的发展，气动光学效应对机载成像的影响引起了人们的广泛关注。然而，以往的研究主要集中在各种边界条件下的稳定像差和高超声速流场对气动光学机制的影响，而这些影响和像差的动力学特性研究相对较少。本研究通过分析不同曝光时间下空气光学效应的光谱特性和像差变化，探讨了空气光学效应的动态特性。研究了马赫数、高度和攻角变化对这些动力特性的影响。本研究还评估了曝光期间像差在图像平面上的时间积累。结果表明，像差的平均一次频率明显高于气动光学效应的平均一次频率。在大约81-82的曝光时间内实现最佳图像质量% at a fixed altitude. In most instances, third-order polynomial linear regression effectively models image quality variations with increasing exposure durations, with fitted results yielding R$^{2}$$\geq$0.85. This study offers practical insights for improving imaging system design and exposure control to mitigate dynamic aero-optical distortions in hypersonic applications.

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.