某校园电磁环境时间变化特征与评估
Time Variation Characteristics and Assessment of Electromagnetic Environment in a Campus

随着电磁环境的日益复杂，对电磁环境进行实际测量和评估具有重要的应用价值. 本文根据电磁环境在时间上具有随机变化的动态性，对某校园实际电磁环境的时间变化特征进行了研究. 通过选取某个校园内不同区域的采样点，分别在不同时间测量采样点的电场值，然后对采集的数据进行统计分析，进而给出了相应空间区域内的电场概率密度分布以及电场随时间变化曲线图，具体分析和讨论了实际电磁环境随时间变化的特征，比较了不同区域电磁环境分布情况，并对校园电磁辐射水平作了简要评估.
With the increasing complexity of the electromagnetic environment (EME), it is necessary to perform actual measurement and evaluation of the EME. Because of the temporal dynamic and random variation of the EME, time variation characteristics of the EME in a campus are considered in this paper. By choosing sampling points in different regions of the campus, respectively measuring electric field value of the sampling points during different time periods, and using statistical analysis of the measurement data, we get the figures of probability density distribution and time variation curve of the electric field. And then, the time variation characteristics of the actual EME are analyzed and discussed, the distributions of the EME in different regions are compared, as well as a brief evaluation of the electromagnetic radiation level in the campus is given