摘要
针对障碍物较多的定位环境,本文对障碍物影响下的无线电信号进行建模,通过过滤出信号被障碍物遮蔽但能加强待定位节点定位的盲节点,并把盲节点加入待定位节点当前的锚节点集,利用待定位节点前后时刻的锚节点差集,提高待定位节点的锚节点信号接受率,从而提高定位精度.实验仿真结果表明,该文提出的改进算法在障碍物较多的定位场景中能以较小的时间代价取得更好的定位精度.
Aiming at the localization of environment with moving barriers,a model is constructed to simulate how the radio signal of an anchor can be blocked by barriers in this paper,by using the difference set of a node’s adjacent anchor set,a few blind anchors whose signal are blocked by barriers can be filtered out. These blind anchors can strengthen the condition of sample filtering and as a result improve the positioning accuracy. The experimental result shows that the improved algorithm has a better positioning accuracy under the condition of paying a small cost of time.
作者
单志龙
黄恒
项婉
SHAN Zhi-long;HUANG Heng;XIANG Wan(School of Computer Science,South China Normal University,Guangzhou 510631,China;School of Distance Education,South China Normal University,Guangzhou 510631,China)
出处
《小型微型计算机系统》
CSCD
北大核心
2019年第11期2352-2356,共5页
Journal of Chinese Computer Systems
基金
国家自然科学基金项目(61671213)资助
广州市科技计划项目
作者简介
单志龙,男,1976年生,博士,教授,CCF会员,研究方向为物联网、无线传感器网络、无线通信网络等.E-mail:sunnyszl@163.com;黄恒,男,1990年生,硕士研究生,研究方向为无线传感器网络;项婉,女,1993年生,硕士研究生,研究方向为无线传感器网络.
