摘要
设计的多目标实时定位系统,由提前部署的声定位目标节点和随身携带的智能定位终端组成,提出了一种基于时间差的定位方法(TDOA)的多目标定位的改进算法,由于人员走动时,会引起超声波信号的多普勒效应,因此预先估计多普勒频移并补偿,以监测准确频点时刻,通过RSS、布置图,以及步速信息进行协同处理,考虑到不同锚节点对均方误差有不同影响,找出最近的4个声定位节点,进行CHAN算法定位,经仿真和现场测试具有较高定位精度。
This paper designs a multi-target real-time location system, composed of early deployed acoustic locating target node and portable intelligent positioning terminal. It also proposes an improved algorithm of multi-target localization based on TDOA. As persons move around, it will cause the Doppler Effect of the ultrasonic signal; therefore, the Doppler shift and compensation are estimated in advance to monitor the accurate frequency. RSS, layout, and pace information are used for coprocessing, and considering the different effects of different anchor nodes on the mean square error, the nearest four sound positioning nodes are located by CHAN algorithm. Simulation and field testing have verified the high positioning accuracy.
出处
《电力与能源》
2017年第6期702-705,共4页
Power & Energy
基金
江苏省电力公司科技项目(JSDL-WXFW-2016-02-01-039)
