一种改进的TDOA无线传感器网络节点定位算法

传感器组成的无线网络中，准确获取每个传感器节点的位置信息有着非常关键的作用。在分析比较其他定位算法的基础上，采用了以精度较高的距离相关性为理论基础实现的TDOA定位算法，并针对实际情况对算法进行了优化改进。实验中为了得到节点声信号的到达时间差，对信号进行了ⅡR滤波处理和幅值包络分析。仿真和实验结果表明，文章中所设计的TDOA定位算法不仅大大减少了计算量，而且定位结果精确，是可行的。

A Revised TDOA Wireless Sensor Network Node Location Algorithm

In the wireless sensor networks,obtaining location information of network node accurately is of vital impor-tance. On the bases of comparing several range-based node location algorithms methods,this paper adopted a TDOA location algorithm which was based on the theory of range-based higher accuracy,and then made revises about algo-rithm in realistic condition. In order to get the arrival time difference of sound signal through measurement,we com-pletedⅡR filter and amplitude analysis. The simulation and experimental results show that the TDOA location algorithm of this design greatly reduces the amount of calculation and has accurate location results,which is practicable.