大型广播电视塔周边电磁辐射场强空间分布和区域规划研究

Research on Spatial Distribution and Regional Planning of Electromagnetic Radiation Intensity around Large Radio and Television Tower

广播电视塔周边场强的精细化空间预测一直是领域内的技术难题,以某省级大型广播电视塔为例,利用功率、增益、馈损、天线方向性图等技术参数深化预测模型的基本原理。通过关键预测断面选取、空间角度设计,结合专业绘图软件,分析探究电场强度的空间分布特征。结果显示水平面场强值较低,均小于限值要求;垂直面主瓣方向存在较大的超限值区域,垂直高度在100 m以上,水平距离在1000 m以内。该分布特征对于发射塔周边区域超高层建筑的规划建设具有重要的指导意义。

The precise spatial prediction of the field intensity around the radio and television tower has always been a technical problem in the field.In this study,a large provincial radio and television tower is taken as an example to deepen the basic principle of the prediction model by using technical parameters such as power,gain,feeder loss and antenna pattern.Through the selection of key prediction section,spatial angle design and combined with professional drawing software,the spatial distribution characteristics of electric field intensity are analyzed and explored.The results show that the field strength of horizontal plane is lower than the limit value.There is a large area of over limit value in the direction of main lobe in vertical plane,with vertical height of more than 100m and horizontal distance within 1000m.The distribution characteristics have important guiding significance for the planning and construction of super high-rise buildings around the launch tower.