无线传感器网络中移动目标的定位及误差分析  

Localization and Error Analysis of Moving Target in Wireless Sensor Network

作　　者：杨阿弟[1] 佘明辉[1] 

机构地区：[1]湄洲湾职业技术学院自动化工程系,莆田351254

出　　处：《西安工业大学学报》2016年第4期340-344,共5页Journal of Xi’an Technological University

基　　金：福建省教育厅自然科学基金项目(JA12456)

摘　　要：为了提高无线传感器网络中移动目标的室内定位精度,采用插值算法与信号传播通道模型相配合,结合X-Bee无线传感器网络技术,提出了移动目标实际位置的计算方法.通过该方法计算出理想距离,参照实际距离进行修正,建立了一套无线接收信号强度定位算法.结果表明:该算法的动态权重法误差值和固定权重法误差值在功率级别为Lowest时较其他功率级别小,系统定位精度较高;且功率级别为Lowest时,动态权重法误差值小于固定权重法.In order to improve the indoor positioning precision of moving targets in wireless sensor networks, the method of calculating the actual position of moving targets by using interpolation algorithm to match the signal propagation channel model, combining with X-Bee wireless sensor network technology, is put forward. With this method, the ideal distance is calculated, and then corrected with reference to the actual distance, to establish a set of wireless receiving signal strength localization algorithm. The result shows that when the power level is Lowest, the error value of dynamic weighing method and fixed weighing method of this algorithm is smaller than those in other power levels, and the system positioning accuracy is better. Bsides, when the power level is Lowest,the error value of dynamic weighing method is smaller than that of fixed weighing method.

关 键 词：无线传感器网络 误差分析 定位精度 动态权重法 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TN929.5[自动化与计算机技术—控制科学与工程]