基于Zigbee技术的煤矿井下GIS辅助定位算法

针对无线传感器网络井下定位与跟踪系统中移动节点在参考节点数目小于3的情况下无法定位的问题,提出了基于Zigbee技术的井下GIS辅助定位算法,依据Zigbee网络的测量数据通过对GIS中图层、图元的操作来完成移动节点在信标节点不足情况下的定位跟踪和无信标节点情况下的区域估计.实验结果表明,该定位算法平均纵向定位误差小于2.5 m，横向误差小于1/2巷道宽度，在3～8 m宽的巷道内点位误差为2.5～5.0 m，跟踪延迟少于1 s，具有较好的定位与跟踪性能,有效地扩大了井下定位网络的覆盖范围.

Assistant localization algorithm of underground GIS based on Zigbee

Aiming at the problem that mobile node couldn't be located while the number of the reference nodes was less than 3 in underground localization and tracing system based on wireless sensor networks,an assistant localization algorithm of underground GIS was presented which was based on Zigbee.By using the measuring data from the Zigbee networks and operating the layers and units to complete locating and tracing,while the reference nodes were not enough,and the area estimating,while no reference node.Experiment...