WSN中基于改进的RSSI定位算法研究OA
Research on positioning algorithm based on improved RSSI in WSN
降低节点定位误差是无线传感网一直不断改进的方向.在RSSI定位算法的基础上,引入加权概念降低定位误差.首先针对定位算法中RSSI均值不准确的问题,采用常态分布处理,通过似然函数来获得RSSI的阈值,从而避免均值过大的情况;其次通过权值因子来分配锚节点与未知节点之间估算距离的权重.在MATLAB仿真实验平台中,与其他算法在通信半径和锚节点密度等条件下的相比发现,文中算法具有比较好的效果.
To reduce node positioning error has always been a direction that has been constantly improved in wireless sensor network.Based on RSSI positioning algorithm,this paper adds the concept of weighting to reduce positioning error.First of all,aiming at the inaccurate average value of RSSI in positioning algorithm,normal distribution is used to obtain the threshold value through likelihood function so as to prevent the average value from being too large.Se…查看全部>>
傅彬
绍兴职业技术学院,浙江 绍兴 312000
计算机与自动化
节点定位RSSIWSN
node positioningRSSIWSN
《微型机与应用》 2017 (5)
69-71,75,4
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