基于接收信号强度指示的改进质心定位算法

摘要

传统质心定位算法虽然简单易行、成本低,但仅为粗略的定位估计方法,定位精度亟需改善.针对该问题,通过优选信标节点,提出了一种基于接收信号强度指示(RSSI)数据的改进质心定位算法,有效克服了传统质心定位算法"通信半径越大,定位精度反而下降"的缺点.通过MATLAB仿真验证算法的有效性和可靠性.%Although traditional centroid localization algorithm is simple and low-cost range-free localization method,its positioning precision is inadequate and remains to improve. In order to solve this problem,an improved centroid localization algorithm is proposed to enhance the traditional centroid method by optimization of beacon nodes and utilization of the received signal strength indication(RSSI)data. This revised method not only reduces localization error,but also overcomes shortcomings of traditional approach larger communication radius,and low positioning precision. Effectiveness and realibility of the algorithm is validated by MATLAB Simulation.