基于路径损耗指数修正的目标节点定位算法

Journal of China Academy of Electronics and Information Technology（2019）

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Abstract

基于接收信号强度(Received Signal Strength,RSS)测量的定位精度依赖于路径损耗指数(Path Loss Exponent,PLE).低精度的PLE值降低了对目标节点定位精度.为此,提出基于路径损耗指数修正的目标节点定位(Path loss exponent correction-based Target node localization,PCTL)算法.PCTL算法先通过接收设备的敏感级别,感测信道和传输功率,并推导最小发射功率,再修正PLE.然后,依据修正后的PLE,并结合质心定位算法估计目标节点位置.仿真实验结果显示,提出的PCTL算法能够准确地估计PLE和目标节点位置.

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