传感技术学报2017，Vol.30Issue(9)：1438-1446,9.DOI:10.3969/j.issn.1004-1699.2017.09.024
基于TDOF的分布式激光定位系统设计与实现
The Design and Implementation of Distributed Laser Location System Based on TDOF Technology
摘要
Abstract
According to the concept of Wireless Sensor Networks( WSN) positioning system,this paper presents an indoor location system based on TDOF( Time Difference of Flight) from a set of 905 nm narrowband infrared laser pulses,which are high-precision,high-frequency. The system collects the TDOF information from the synchronous node and the positioning node through the laser receiving module as the beacon node. The signal is transmitted to the central control host through serial port. The central control host computes the position with the TDOF signal and the spatial coordinates of the beacon nodes. The solving method of the localization equation is based on the Gauss-Newton iterative algorithm and the least square method. Theoretical analysis and experimental results show that av-erage localization error can be controlled within ± 6. 5 mm. The positioning accuracy can be further improved by more valid data.关键词
无线传感器网络/飞行时间差/室内定位系统/高斯牛顿迭代法/最小二乘法Key words
WSN/TDOF/indoor location system/Gauss-Newton iterative algorithm/least square method分类
信息技术与安全科学引用本文复制引用
李文江,符建..基于TDOF的分布式激光定位系统设计与实现[J].传感技术学报,2017,30(9):1438-1446,9.
