基于RSSI的无线传感器网络节点测距方法研究

Node Ranging Method Based on RSSI of Wireless Sensor Network

基于RSSI的测距技术是无线传感器网络测量节点间距离的基础,RSSI测距具有通信开销小、实现复杂度低等优点,可广泛应用于无线传感器网络的定位、监测等领域。首先分析RSSI测距的原理,在此基础上采用用户自定义通信协议的CC1100芯片进行测距实验,取得了多组数据,通过对实验数据的分析,验证了在适度的环境下RSSI测量值的变化与距离的关系有一定的规律可循,提出采用加权和均值的方法降低外界环境对RSSI测距的影响,并用实验加以验证。

Firstly this paper analyzes the RSSI Ranging principle,on this basis,using user-defined communication protocols CC1100 chip for experiments,obtaines many groups of data,through the analysis of experimental data,verified in the appropriate environment changes RSSI measurements are associated with the change of distance have certain rules to follow,and proposed using the weighted average of the ways to reduce the external environment influence on the RSSI ranging,and verified by experiment.