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首页> 外文期刊>Advances in Science, Technology and Engineering Systems >Detailed Analysis of Amplitude and Slope Diffraction Coefficients for knife-edge structure in S-UTD-CH Model
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Detailed Analysis of Amplitude and Slope Diffraction Coefficients for knife-edge structure in S-UTD-CH Model

机译：S-UTD-CH模型中刀刃结构的振幅和斜率衍射系数的详细分析

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摘要

In urban, rural and indoor applications, diffraction mechanism is very important to predict the field strength and calculate the coverage accurately. The diffraction mechanism takes place on NLOS (non-line-of-sight) cases like rooftop, vertex, corner, edge and sharp surfaces. S-UTD-CH model computes three type of electromagnetic wave incidence such as direct, reflected and diffracted waves, respectively. As obstacles in diffraction geometry are in the same or closer height, contribution of the diffraction mechanism is dominant. To predict the diffracted fields accurately, amplitude and slope diffraction coefficients and the derivative of these coefficients have to be taken correctly. In this paper, all the derivations about diffraction coefficients are made for knife edge type structures and extensive simulations are performed in order to analyze the amplitude and diffraction coefficients. In plane angle diffraction, contributions of amplitude and slope diffraction coefficient are maxima.
机译：在城市，农村和室内应用中，衍射机制对于预测场强和准确计算覆盖范围非常重要。衍射机制发生在NLOS（非视线）情况下，例如屋顶，顶点，拐角，边缘和尖锐表面。 S-UTD-CH模型分别计算三种类型的电磁波入射，例如直接波，反射波和衍射波。由于衍射几何学中的障碍物处于相同或接近的高度，因此衍射机理的贡献占主导地位。为了准确地预测衍射场，必须正确地获取振幅和斜率衍射系数以及这些系数的导数。在本文中，对刀刃型结构进行了所有有关衍射系数的推导，并进行了广泛的仿真，以分析振幅和衍射系数。在平面角衍射中，振幅和斜率衍射系数的贡献最大。

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