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首页> 外文会议>Conference on Target and Background Signatures >Spectral reflectance and transmission properties of a multi-layered camouflage net: Comparison with natural birch leaves and mathematical models
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Spectral reflectance and transmission properties of a multi-layered camouflage net: Comparison with natural birch leaves and mathematical models

机译：多层迷彩网的光谱反射率和传动特性：与天然桦木叶和数学模型的比较

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摘要

With improved specifications and capabilities of modern sensors and detectors, concealment is an increasingly challenging endeavor. Concealment from modern sensors requires advanced camouflage material that can provide low background-contrast over a wide range of spectral wavelengths. Multi-layer material (i.e. textile fibers) allow for advantageous camouflage abilities such as improved heat transfer and modification of spectral signatures. In this study, we investigate the effect of multiple layers on the reflectance properties of a camouflage net. Camouflage nets provide protection against visual, thermal and radar threats, and can be tailored to offer effective concealment in various natural backgrounds and climate zones. By utilizing a simple mathematic model, we predict multi-layered reflectance properties of the camouflage net from single-layer reflectance data. The model is in good agreement with measurement data for multi-layer net material, and the materials in the study behaves similar to partly transmitting leaves. We also find that 2-3 layers of the materials is sufficient to hinder reflectance contributions from the background. At certain wavelengths, the required number of layers is even lower and reveals that the transmission and reflectance are wavelength dependent.
机译：随着现代传感器和探测器的改进规格和能力，隐瞒是一个越来越具有挑战性的努力。从现代传感器隐藏需要先进的伪装材料，可以在宽范围的光谱波长范围内提供低背景对比。多层材料（即纺织纤维）允许有利的伪装能力，例如改善的传热和光谱签名的改变。在这项研究中，我们研究了多层对迷彩网的反射特性的影响。伪装网提供防范视觉，热和雷达威胁，可以根据各种自然背景和气候区提供有效的隐藏。通过利用简单的数学模型，我们从单层反射数据预测伪装网的多层反射特性。该模型与多层净材料的测量数据很好，研究中的材料类似于部分传输叶子。我们还发现2-3层材料足以阻碍来自背景的反射率贡献。在某些波长处，所需的层数甚至更低，并揭示了传输和反射率是波长依赖性的。

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