摘要
为了解决传统无线传感网络(WSN)中定位方法精度不高的问题,将协同定位的技术应用到无线传感网络的定位中。首先,通过对盲节点与参考节点的距离关系的分析,初步确定了盲节点区域;然后利用接收信号强度指示(RSSI)测距技术建立了盲节点之间的相对位置关系,并应用盲节点的相对位置关系多次迭代缩小盲节点区域,精确盲节点位置;在此基础上,提出了基于RSSI的无线传感网络协同定位算法。在Zigbee平台上对该算法进行了技术评价,与传统定位方法进行了对比实验,实验结果表明,基于RSSI的无线传感网络协同定位算法具有一定的精度优势,特别是当参考节点数目较少时,这种优势比较明显,具有良好的应用前景。
In order to enhance the precision of wireless location in the traditional wireless sensor network （WSN）, a cooperative location algo- rithm used in the WSN was investigated. After the analysis of the distance between blind nodes and reference nodes, the blind nodes area initially took shape . Then the distance among blind nodes was established by using the received signal strength indication（RSSI） ranging technique. The blind node area was narrowed after several times iteration. A cooperative location algorithm based on RSSI was proposed. The algorithm was evaluated on the Zigbee platform, the differences between this algorithm and the traditional location algorithm were tested. The experimental results show that this algorithm has promotion on accuracy, especially in situations where there are fewer nodes. The algorithm oroposed can be at）plied in WSN and has a promising future.
出处
《机电工程》
CAS
2012年第1期116-119,共4页
Journal of Mechanical & Electrical Engineering
基金
浙江省新苗人才计划资助项目(2010R403011)
关键词
协同定位
无线传感网络
ZIGBEE技术
接收信号强度
cooperative location algorithm
wireless sensor network（WSN）
Zigbee technology
received signal strength indication（RSSI）
