移动通信基站近距离区域电磁辐射分布特征研究

目的 为使公众了解移动通信基站近距离区域电磁辐射的分布特征,同时也为环境监测部门选择监测时段和点位提供参考。方法 通过选取有代表性的移动通信基站,对其近距离区域的电磁辐射进行24h监测与分析,研究正常工作日下基站近距离区域电磁辐射强度随时间、距离的变化趋势,并根据话务量、天线特性对电磁辐射的时空分布特征进行分析。结果 研究结果表明,一天内移动基站附近电磁辐射随时间呈现明显波动,其功率密度分布大致呈"M"型,与话务量具有正相关性。功率密度随距离增加亦呈现明显变化,近距离区域(0m~30m)功率密度分布大致呈"Λ"型,峰值出现的距离与天线特性有关。结论 环境监测部门应根据话务量和天线特性选择合适的监测时段和点位,了解基站对电磁辐射环境的主要影响。

The Distribution Feature Research of Electromagnetic Radiation in the Nearby Regions of the Mobile Communication Base Stations

Objective To make the public to understand the distribution feature of electromagnetic radiation in nearby regions around the mobile communication base stations,and provide reference for the environmental monitoring department to choose the Monitoring periods and points.Methods Through 24-hour surveys and analysis of electromagnetic radiation in the nearby region around the representative mobile communication base station,the radiant intensity change vs the time and distance in normal operating day.And base...