基于相位差的多系统通信基站的电磁辐射监测

Electromagnetic Radiation Monitoring for Multi System Communication Base Station based on Phase Difference

在安徽宣城通信基站中选取103个基站并设置924个监测点位,用电磁辐射分析仪监测,利用相位差确定所属区域后对基站电磁辐射强度作理论预测,与现场监测值对比分析。结果表明,现场监测电场强度值为0. 20 V/m～1. 86 V/m,均值为0. 45 V/m;功率密度为0. 011μW/m^2～0. 918μW/m^2,均值为0. 063μW/m^2,远小于标准限值。说明该区电磁环境状况整体较好,基站周围电磁辐射随着距离的增大而不断减小,功率密度实测值变化趋势与理论预测值基本一致。

103 base stations in Xuancheng Anhui were selected and 924 monitoring sites were set up. The electromagnetic radiation was monitored by NARDA NBM-550/EF0391 electromagnetic radiation analyzer. The intensity of electromagnetic radiation was predicted theoretically by using phase difference for location determination and comparing with field monitoring value. The results showed that the electric field strength was 0.20 V/m^1.86 V/m, with the average of 0.45 V/m. The power density was 0.011 μW/m^2 ~0.918 μW/m^2 , with the average of 0.063 μW/m^2 , far below the standard limits. It showed that the electromagnetic environment in the study area was good as a whole. The electromagnetic radiation around the base station decreased as the distance increased. The variation of measured power density was basically consistent with the theoretical prediction.