针对用电信息采集系统中的微功率无线抄表技术,对特定频段信号的传播路径损耗特性进行了大量的现场实验测试,使用最小二乘法对测量结果进行线性回归分析。分析结果表明,城市环境下的微功率无线信道可用对数阴影正态分布模型较好的拟合,可为城市环境下集中器的安装部署提供依据。 Aiming at the micro-power wireless meter reading technology in power information acquisition system, a large number of field experimental tests were carried out on the propagation path loss characteristics of signals in a certain frequency band. The linear regression analysis of the measurement results was conducted by using the least square method. The analysis results show that the micro-power wireless channel in urban environment can be fitted well by the logarithmic normal distribution model, which can provide the basis for the installation and deployment of concentrator in urban environment.