基于中垂面分割的WSN三维定位方法

针对无线传感器网络中节点定位精度不高的问题，提出基于中垂面分割空间的三维定位方法。将待定位节点所在区域划分为若干空间立方体，利用中垂面排除不存在待定位节点的立方体，结合锚节点通信半径进一步缩小待定位节点所在区域，并取其质心作为定位结果。实验结果表明，该方法在锚节点数大于12时，误差率维持在0.02左右。

WSN Three-dimensional Localization Method Based on Midperpendicular Plane Segmentation

Aiming at the problem that location precision is not high in Wireless Sensor Network(WSN), this paper presents a three-dimensional localization method based on midperpendicular plane segmentation. Segment area in which the node to be localized is segmented into some cubes. It uses midperpendicular plane to eliminate some cubes which are not existing awaiting localization nodes, combines communication radius of anchor nodes to shrink the left area, and gets its centroid of the area as final result. Experimental result shows that the number of anchor nodes is greater than 12, and the error rate maintains at 0.02.