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引用次数: 0
摘要
摘要 在双射线模型中研究了超宽带（UWB）波在地球表面的传播特征。研究表明，由于超宽带波的自相关时间极短，因此存在一个极限距离（断点），在此距离之前，超宽带波的衰减近似于自由空间中的路径损耗指数 n = 2，而不会出现衰减；在断点之后，波的衰减指数变为 n = 4。
Investigation of the Attenuation Rate of a Ultrawideband Wave Outdoors in a Two-Ray Model
Abstract
The features of propagation of an ultrawideband (UWB) wave over Earth’s surface in a two-ray model are studied. It is shown that there is a limiting distance (break point) up to which the UWB wave attenuates approximately as in free space with pathloss exponent n = 2 without experiencing fading due to the extremely short UWB autocorrelation time; beyond the break point, the wave attenuation exponent becomes equal to n = 4.
期刊介绍：
Journal of Communications Technology and Electronics is a journal that publishes articles on a broad spectrum of theoretical, fundamental, and applied issues of radio engineering, communication, and electron physics. It publishes original articles from the leading scientific and research centers. The journal covers all essential branches of electromagnetics, wave propagation theory, signal processing, transmission lines, telecommunications, physics of semiconductors, and physical processes in electron devices, as well as applications in biology, medicine, microelectronics, nanoelectronics, electron and ion emission, etc.
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