摘要
Knowledge of the electromagnetic radiation characteristics of 5G base stations under diferent circumstances is useful for risk prevention,assessment,and management.This paper selects several typical scenes(Open spaces,building concentration areas,user and building intensive areas)for electromagnetic radiation monitoring,and analyzes the relationship between ambient radiated power density and base station background.The results show that the factors that have signifcant impacts on the environmental radiation power density of 5G base stations including transmission distance,base station distribution,user density,building refection superposition and so on.The radiation energy decays rapidly with distance.When the density of the building distribution is too large,the superposition efect caused by the refected wave is concentrated at the distance of 50-70 meters.When the user density decreases(the superposition efect of refected waves decreases),the 5G monitoring value follows the direct wave attenuation law and decreases rapidly with the increase of distance.Points with higher measured radiation in the simple access condition also had higher measured radiation in the high-speed download condition.With the popularization of 5G mobile phones and the increase of user density,the resource utilization of a single user will decline to the normal operation state,and the radiation environmental impact will be further reduced.
基金
supported by the Ecological Environment Research Project of Jiangsu Province:5G Base station radiation environment monitoring technology and environmental impact research(No.2020014).
