城市电视电波传播特性探讨  

Research on the Propagation Characteristic of City TV Radio Wave

作　　者：林志[1] 罗惠萍[1] 谢泽明[1] 

机构地区：[1]华南理工大学

出　　处：《电波科学学报》1992年第4期57-63,共7页Chinese Journal of Radio Science

基　　金：广东省科委自然科学基金

摘　　要：选取矩形柱体作城市楼房模型。利用广州14频道电视电波测量楼房外墙反射系数模,确定其等效电参量。用一致性几何绕射理论计算直角导电直劈绕射场,与实测数据进行比较。根据反射系数模曲线、直劈绕射场曲线,对城市电视电波传播特性进行探讨,估计可能产生的重影。In this paper,a rectangle column is selected to simulate the city building.Its equivalent elec- trical parameter is determined according to the modulous of reflection coefficient,which is ob- tained from measuring the radio wave reflected from the wall of a building with the TV wave ra- diated from channel 14 of Guangzhou.Diffraction field for a right angle conducting wedge is cal- culated in accordance with uniform geometrical theory of diffraction,and the gotten result is com- pared with the data which are obtained from the measuring in site.On the basis of the modulous curves of reflection coefficient and diffraction field curves of the right angle wedge,we probe into the propagation characteristic of city TV ware and estimate the probably produced ghost as well.

关 键 词：电视 电波传播 特性 

分 类 号：TN94[电子电信—信号与信息处理]