矿井定位系统的测距调度算法

Ranging Scheduling Algorithm of Mine Localization System

针对矿井定位系统中邻近节点间同时测距时产生信号干扰和冲突,造成定位精度下降和节点能量浪费的问题,提出一种按需测距调度算法。采用移动节点主动提出定位请求、锚节点动态自主配组的方式,以有效避免矿井定位系统中的测距冲突,降低定位盲区的影响。仿真结果表明,与基于固定配组的调度算法相比,该算法具有更高的定位覆盖度和更低的定位时延,能降低移动人员的定位误差。

Aiming at the radio signal interference and collision problem suffered by nearby nodes when ranging concurrently in mine localization system,which result in localization precision deteriorated and nodes energy wasted,this paper proposes a novel on-demand ranging scheduling algorithm.By adopting the strategy of mobile nodes putting forward localization demand actively and anchors dynamic grouping autonomously,ranging collision in mine localization system is effectively avoided and the influence of localization dead area is mitigated.Simulation result shows that,compared with other schedule algorithm based on invariable group,the algorithm performs better in higher localization coverage,smaller localization delay and the localization error of mobile miners is reduced greatly.