【摘要】 本文根据铁路移动通信的特点,在大量实测数据的基础上采用数理统计方法,得出场强—距离—天线高度的传播曲线。并研究场强沿铁路的起伏规律,导出场强起伏的概率分布函数,得到场强偏差系数和概率系数。为估算超短波铁路移动通信场强提供数据。更多还原

【Abstract】 Basing on the characteristics of railway mobile communication and a large quantity of measured data, this paper obtains propagation curves with regard to the field strength —— distance —— height of antenna by method of mathematical statistiesoStudies also are conducted on the rule of fading of field strength along the railway line. A function of probability distribution of fading is derived and the deviation coefficient and probability coefficient of field strength are obtained. It may prove to be useful in estimating VHF and UHF field strength for railway mobile communication.更多还原