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Comparison of empirical and predicted ultraviolet aircraft signatures

机译：经验性和预测性紫外线飞机签名的比较

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摘要

In light of the potential threat to aircraft from missiles using ultraviolet (UV) wavebands, it is important to understand the signature of an aircraft and how this can be predicted. This study compares empirical UV signature data to modeled data from camouflage electro-optical simulation (CAMEOSIM) to determine how well the contrast between the object and the background can be predicted using local knowledge of the atmosphere. CAMEOSIM uses the standard moderate resolution atmospheric transmission (MODTRAN) model to estimate the radiative transfer through the atmosphere. Both MODTRAN and CAMEOSIM are well validated in visible and infrared wavebands, and MODTRAN can accurately predict UV radiative transfer. Unfortunately, the work so far has concentrated on bulk transfer to describe the sky background in the UV where the aircraft scene is typically a negative contrast "hole" in a positive sky background. Importantly, path-to-path scattering is a key consideration in this scene since it is this that will tend to blur the edges of an object and reduce the contrast associated with it. A developed understanding of the limitations is required. It is determined that prediction is possible up to the ranges of 5 km. The local visibility (in km) is required for this prediction.
机译：鉴于使用紫外线（UV）波段的导弹可能对飞机造成威胁，因此了解飞机的特征以及如何对其进行预测非常重要。这项研究将经验UV签名数据与伪装光电模拟（CAMEOSIM）的建模数据进行比较，以确定可以使用局部大气知识预测物体与背景之间的对比度的程度。 CAMEOSIM使用标准的中等分辨率大气传输（MODTRAN）模型来估计通过大气的辐射传输。 MODTRAN和CAMEOSIM在可见光和红外波段均得到了很好的验证，并且MODTRAN可以准确预测紫外线辐射的传递。不幸的是，迄今为止的工作集中在大量转移上，以紫外线描述天空背景，其中飞机场景通常是正天空背景中的负对比度“孔”。重要的是，路径到路径的散射是此场景中的关键考虑因素，因为这样会使对象的边缘模糊并降低与之相关的对比度。需要对限制有深入的了解。确定在5 km的范围内可能进行预测。此预测需要本地可见性（以km为单位）。

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  • 来源
    《Optical engineering》 |2019年第2期|025103.1-025103.13|共13页
  • 作者

    Itor James; Mark Richardson; Eoin OKeefe;

  • 作者单位

    Cranfield University, Defence Academy of the UK, Shrivenham, Wiltshire, United Kingdom;

    Cranfield University, Defence Academy of the UK, Shrivenham, Wiltshire, United Kingdom;

    QinetiQ, Cody Technology Park, Farnborough, Hampshire, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ultraviolet; aircraft; signature; prediction; modeling; atmosphere;

    机译：紫外线飞机;签名;预测;造型;大气层;

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