摘要
为了完成短距离室内定位问题,提出了一种利用ZigBee技术的解决方案.通过对无线电传播路径损耗模型的分析,给出了一种基于接受信号强度指示(Received Signal StrengthIndicator,RSSI)的节点定位算法.以三边定位算法为基础,对得出的解加权平均以达到优化定位结果的作用.实验研究表明,在一定的通讯距离之内,可实现在扩大定位范围的同时提高定位精度.现场实验中最佳定位控制精度可达到0.5 m.
In order to solve the indoor short-distance location issue, a method which utilizes ZigBee technology is proposed. As one of the wireless sensor technology, ZigBee taking advantage of longer service life, lower cost and energy consumption. The loss model of radio path is analyzed and a node location method based on Received Signal Strength Indicator （RSSI） is proposed in this article. RSSI is on the ground of trilateral localization algorithm and the location results are optimized by weighted average. The results show that the possibility of location scope expansion and accuracy can be improved at the some time,and the optimal location control precision is limited in 0. 5 m in field experiments.
出处
《西安工业大学学报》
CAS
2010年第1期9-12,共4页
Journal of Xi’an Technological University
