基于混合辐射偏振模型的空中目标红外偏振特性建模和仿真
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1.中国科学院沈阳自动化研究所;2.沈阳理工大学

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基金项目:

兴辽英才(XLYC2201001),科技委基础加强计划重点项目(E21Z0001),研究所基础研究计划面上项目(E3290402)


Modeling and Simulation of Infrared Polarization Characteristics of Aerial Targets Based on a Hybrid Radiation Polarization Model
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Affiliation:

1.Shenyang Institute of Automation, Chinese Academy of Sciences;2.Shenyang Ligong University

Fund Project:

Liaoning Revitalization Program(XLYC2201001), NDBS Enhancement Plan (E21Z0001) , Basic Research Plan of SIA(E3290402)

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    摘要:

    面向空中高速目标红外偏振探测需求,针对空中目标红外偏振特性的计算和图像生成问题,本文提出适用常见高速目标红外偏振特性的计算方法和仿真流程。该方法基于混合辐射偏振模型,综合考虑目标表面自身热发射、太阳辐射反射、环境辐射反射及大气传输效应,建立了空中目标红外线偏振度(DoLP)计算模型框架并给出了具体材质的模型实例化方法,所建材质样板DoLP计算值与实测值偏差小于10%。仿真流程以高速飞行的SR-72侦察机为例,基于目标材质样板偏振计算模型生成的反射/辐射率矢量数据,借助Unity3D引擎实现了SR-72目标红外偏振特性的实时计算仿真,图像帧率达到35帧/s,生成了不同飞行速度、探测波段(中波/长波)和太阳光照(存在与否)条件下SR-72的红外偏DoLP图像,分析了目标红外偏振特性的部分变化规律。本研究为空中目标红外偏振探测及相关评估应用提供数据基础和仿真支撑。

    Abstract:

    To address the need for infrared polarization detection in high-speed aerial targets, this paper presents a practical method for calculating and simulating the infrared polarization characteristics of these targets. Based on a hybrid radiative polarization model, an infrared degree of linear polarization (DoLP) calculation framework for aerial targets and an instantiation method for typical materials are developed. This model framework considers thermal emission, solar and environmental radiation reflections, and atmospheric transport effects. The deviation between the calculated and measured DoLP values for the material samples is less than 10%. Taking the high-speed SR-72 reconnaissance aircraft as an example, the simulation process is based on the reflection/radiance vector data generated by the polarization calculation model of the target material. The real-time simulation of the SR-72 target's infrared polarization characteristics is conducted with the Unity3D engine, and the image frame rate reaches 35 frames per second. The DoLP images of the SR-72 are simulated under varying conditions, including flight speed, detection band (MWIR/LWIR), and solar illumination. The variations in its polarization characteristics are subsequently analyzed. This study provides a data foundation and simulation support for infrared polarization detection and related assessment applications of aerial targets.

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  • 收稿日期:2025-04-21
  • 最后修改日期:2025-06-03
  • 录用日期:2025-06-04
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