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提出了一种利用多能量级广播信号实现节点位置估计的分布式节点定位方法.未知节点通过接收多组导标节点定位信号,利用不同导标不同能量级信号的传输特征求取相关能量环交点,然后利用交点坐标采用质心定位原理实现节点位置估算.分析了定位方法的基本原理及影响其定位性能的主要参数,并对定位过程中的导标节点选择方法进行了探讨.仿真结果表明,提出的定位方法在定位精度及能量有效性等方面均较传统免测距定位方法(如centroid算法和APIT算法)有明显的优势.
A distributed node location method based on multi-energy level broadcast signals is proposed.Universal nodes receive the signals of multiple sets of guide nodes and use the transmission characteristics of signals of different energy levels to find the corresponding energy point of intersection , And then uses the intersection point coordinates to realize the position estimation of the node by using the centroid positioning principle.The basic principle of the positioning method and the main parameters affecting its positioning performance are analyzed and the selection method of the guide node in the positioning process is discussed.The simulation results show that Positioning method has obvious advantages over the traditional distance-free location methods (such as centroid algorithm and APIT algorithm) in terms of positioning accuracy and energy efficiency.