DEDUCTION OF GROUND IMPEDANCE FROM MEASUREMENTS OF EXCESS ATTENUATION SPECTRA

DEDUCTION OF GROUND IMPEDANCE FROM MEASUREMENTS OF EXCESS ATTENUATION SPECTRA
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从过度衰减频谱的测量中推导出接地阻抗

DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
K. Attenborough
K. Attenborough
中科院分区：
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文献类型：
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作者：
S. Taherzadeh;K. Attenborough

文献摘要

被引文献

相似文献

提出了一种从点源短程传播测量中推导出地表阻抗的有效数值方法。该方法涉及寻找复杂方程的根，并利用以下事实：掠入射附近的球面波反射系数的经典近似是阻抗的解析函数。给出了拟合测量的过度衰减光谱的示例。讨论了确保所得阻抗拟合的唯一性的方法。还考虑并举例说明了随后的二参数阻抗模型中的参数推导。
An efficient numerical method of deducing ground-surface impedance from measurements of short-range propagation from a point source is proposed. The method involves finding the root of a complex equation and uses the fact that the classical approximation for the spherical wave-reflection coefficient near grazing incidence is an analytic function of the impedance. Examples of fitting measured excess-attenuation spectra are given. Methods for ensuring the uniqueness of the resulting impedance fits are discussed. Subsequent deductions of parameters in a two-parameter impedance model are also considered and exemplified.