摘要： 为解决室内应用中无线传感器网络的节点部署、定位与跟踪等问题,需要研究无信信号的传播特性。针对典型的室内走廊环境,对2.4 GHz无线信号的路径损耗特性进行测定,论述发射天线与水平空间的角度D、发射天线高度h与路径损耗的关系,并对测试数据进行线性回归曲线分析。测试和拟合结果表明,在角度D=90°时,无线信号传播的路径损耗最低,随着h的增加,路径损耗的变化趋势减小,在h=1.5 m时路径损耗最小。

关键词: 无线传感器网络, 2.4 GHz无线信号, 路径损耗, 单折线模型, 双折线模型

Abstract: In order to solve the problem of node deployment,location and tracking of Wireless Sensor Network(WSN) in indoor applications,it is necessary to study the propagation characteristics of unbelievable signals.Aiming at the typical indoor corridor environment,the path loss characteristics of the 2.4 GHz wireless signal are measured.The relationship between the angle of the transmitting antenna and the horizontal space,the height h of the transmitting antenna and the path loss is analyzed.Then,the linear regression curves are used to analyze the data.Test and fitting results show that the path loss of the wireless signal propagation is the lowest in the environment of the indoor corridor when the angle D is 90°,and the change of the path loss decreases with the increase of the antenna height h,and the path loss at h=1.5 m.

Key words: Wireless Sensor Network(WSN), 2.4 GHz wireless signal, path loss, single slope model, double slope model

中图分类号: 

• TP393