基于AOA和TDOA的无线传感器网络三维联合定位算法

A THREE-DIMENSIONAL LOCATION ALGORITHM BASED ON AOA AND TDOA FOR WIRELESS SENSOR NETWORKS

结合二维空间中基于波的干涉的角度测量算法和基于到达时间差的定位算法,提出一种适用于三维空间的无线传感器网络定位算法。算法先测量信标节点和待测节点间的角度和距离,然后精确计算出待测节点坐标。该算法复杂度较低,最少只需三个信标节点,采用分布式计算,定位精度高。仿真表明,算法能够较精确地计算三维空间中传感器节点的位置。

Considering the angle measurement method of sensor nodes based on interference of wave and the location algorithm based on TDOA in two-dimensional space,the paper proposed a wireless sensor networks（WSN） location algorithm suitable for three-dimensional space.The algorithm measures the angle and distance between beacon nodes and unknown nodes to be measured first and then accurately calculated the coordinate of those unknown nodes.With low complexity and high location precision,the algorithm needs three beacon nodes in minimum and uses distributed computing.Simulation results demonstrate that with the algorithm the coordinate of unknown sensor nodes can be accurately calculated in three-dimensional space.