典型地面目标红外辐射特性的影响因素分析

IF 2.5 4区 工程技术 Q3 CHEMISTRY, PHYSICAL International Journal of Thermophysics Pub Date : 2024-10-30 DOI:10.1007/s10765-024-03448-7
Qi-hang Ren, Jia-ming Shi, Zhi-gang Li, Zong-sheng Chen, Ya-hui Wang, Yi Liu
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引用次数: 0

摘要

除太阳辐射外,还有许多因素会极大地影响地面目标的温度分布和辐射特性,从而影响红外目标识别系统对它们的探测能力。因此,分析各种因素对典型地面目标辐射特性的影响至关重要。在本研究中,我们解决了大多数商业软件的局限性,这些软件要么缺乏详细的温度计算,要么没有充分处理不同光谱带和太阳辐射之间的辐射传递--这些因素对车辆的红外辐射特性至关重要。我们构建了一个大气模型,并选择一辆汽车作为分析目标,建立了一个以草地为背景的汽车场景模型。随后,我们计算了车辆的温度分布和红外辐射温度分布。随后,在相应条件下进行了实验。对比实验结果和模拟结果发现,两者之间的差异极小,这表明模拟结果具有很高的可信度。分析表明,气流速度对车辆温度的影响很大,导致车辆前后两侧出现明显的温差。在外部辐射效应方面,太阳辐射通过引起温度升高对车辆的辐射特性产生重大影响,特别是影响车辆的中红外反射辐射。另一方面,环境和大气辐射也会在一定程度上影响车辆的温度和辐射温度,特别是在车辆反射率较高时通过反射辐射产生影响。本研究旨在为设计有效的地面目标红外伪装模式提供有价值的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Analysis of Influencing Factors on the Infrared Radiation Characteristics of Typical ground Targets

In addition to solar radiation, numerous factors significantly influence the temperature distribution and radiation characteristics of ground targets, thereby affecting their detectability by infrared target recognition systems. Therefore, analyzing the impact of various factors on the radiation characteristics of typical ground targets is crucial. In this study, we addressed limitations in most commercial software, which either lack detailed temperature calculations or inadequately handle radiation transfer across different spectral bands and solar radiation—factors crucial for vehicle infrared radiation characteristics. We constructed an atmospheric model and selected a vehicle as the analysis target to establish a scene model of a vehicle with the grassy background. Subsequently, we calculated the temperature distribution and infrared radiative temperature distribution of the vehicle. Following this, experiments were conducted under the corresponding conditions. The comparison between the experimental results and the simulation results revealed minimal discrepancies, demonstrating the high credibility of the simulation. The analysis reveals that air velocity significantly influences vehicle temperature, contributing to distinct temperature differentials between the front and rear sides of the vehicle. In terms of external radiation effects, solar radiation significantly influences the radiation characteristics of vehicles by inducing temperature increases, particularly influencing the vehicle’s mid-infrared reflective radiation. On the other hand, environmental and atmospheric radiation influence the vehicle’s temperature and radiative temperature to a certain extent, particularly through reflective radiation when the vehicle’s reflectance is high. This study aims to provide valuable insights for designing effective infrared camouflage patterns for ground targets.

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来源期刊
CiteScore
4.10
自引率
9.10%
发文量
179
审稿时长
5 months
期刊介绍: International Journal of Thermophysics serves as an international medium for the publication of papers in thermophysics, assisting both generators and users of thermophysical properties data. This distinguished journal publishes both experimental and theoretical papers on thermophysical properties of matter in the liquid, gaseous, and solid states (including soft matter, biofluids, and nano- and bio-materials), on instrumentation and techniques leading to their measurement, and on computer studies of model and related systems. Studies in all ranges of temperature, pressure, wavelength, and other relevant variables are included.
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