基于传感器节点的无线接收信号强度研究(英文)

An empirical study of radio signal strength in sensor networks using MICA2 nodes

在真实室内环境中,用MICA2节点设计分析影响无线接收信号强度(radio signal strength,RSS)的实验,发现其影响因素不仅包括发送接收方(transmitter-receiver,T-R)之间的距离,且MICA2节点的工作频率和供电电池电压、发送接收方节点差异、天线角度和高度,以及环境中的时空因素和动态环境等都会影响无线接收信号强度.经分别测试这些因素,建议传统无线信号传播模型和信号校准算法应综合考虑各项影响因素.

A series of experiments using MICA2 nodes in real environments was designed to investigate parameters which are able to affect radio signal strength （RSS）. The frequency, variation of transceivers, antenna orientation, battery voltage of each MICA2 node, temporal-spatial properties of environment, and dynamic environment can affect the performance of RSS along with the transmitter-receiver （T-R） separation distance. Their impacts on RSS are measured comprehensively and independently. The experimental results have demonstrated that the traditional radio propagation model should consider all these parameters and the impact factor of each parameter. The desirable and practical RSS-related solutions in sensor networks are presented in this paper.