基于TDOF的分布式激光定位系统设计与实现

发布时间：2018-10-22 09:21

【摘要】：依据无线传感器网络WSN(Wireless Sensor Networks)定位系统的理念,设计并实现了一套基于一组905 nm的窄带宽红外脉冲激光的高精度,高频率的室内定位系统。该系统利用到达分布式激光脉冲接收器的飞行时间差TDOF(Time Difference Of Flight)进行定位,激光接收模块作为信标节点采集来自同步节点和定位节点先后发出的激光脉冲,并通过串口方式发送TDOF信号到中心控制主机,中心控制主机通过TDOF信号与各信标节点的空间坐标进行定位计算,定位解算方法基于高斯牛顿迭代法(Gauss-Newton iterative algorithm)和最小二乘法(Least square method)。实验结果表明,该系统的平均定位误差可优化到±6.5 mm内,并且可以通过更多有效数据,进一步提高定位精度。
[Abstract]:According to the concept of WSN (Wireless Sensor Networks) positioning system in wireless sensor network, a high precision and high frequency indoor positioning system based on a set of 905 nm narrow bandwidth infrared pulse lasers is designed and implemented. The system uses the time-of-flight difference (TDOF (Time Difference Of Flight) of the distributed laser pulse receiver to locate, and the laser receiving module acts as the beacon node to collect the laser pulses from the synchronous node and the location node successively. The TDOF signal is sent to the central control host through serial port. The central control host uses TDOF signal and the spatial coordinates of each beacon node to locate and calculate. The location solution is based on Gao Si Newton iteration (Gauss-Newton iterative algorithm) and least square method (Least square method). The experimental results show that the average positioning error of the system can be optimized to 卤6.5 mm, and the positioning accuracy can be further improved through more effective data.
【作者单位】：浙江大学光电学院;
【分类号】：TN249

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