摘要
通过对地下无线传感器网络信号传播的实测分析,结合无线信号对数衰减模型,对测试数据进行拟合分析,提出了农田地下无线信号双径传播模型,并针对各自的衰减特点提出了应用前景分析.该模型可为地下无线传感器网络的节点部署、拓扑控制与路由优化等提供理论基础.
In this paper,the propagation characteristic of underground WSN has been measured and analyzed.Experimental result shows that signal attenuation increase with the burial depth when depth is shallow,signal attenuation keep substantially after reaching a certain depth.The test result has been fitting analyzed according to logarithmic decay model.Underground WSN dual-path propagation model is proposed.This model provides a theoretical foundation for node deployment,topology control and router optimization.
出处
《微电子学与计算机》
CSCD
北大核心
2015年第6期101-104,共4页
Microelectronics & Computer
基金
国家科技支撑计划(2012BAD52G01
2011BAD21B02)
关键词
无线传感器网络
信号强度
地下传播
衰减模型
wireless sensor network
RSSI
underground propagation
attenuation model
