摘要
针对APIT算法和基于垂直平分线的区域定位算法(MBLA)迭代次数多,定位精度低的缺点,提出了加权垂直平分线定位算法——WMBLA。该算法根据待定位节点接收到的2个锚节点的RSSI值的比值,移动两锚节点连线的垂直平分线,然后确定待定位节点在垂直平分线的哪一侧。仿真表明:WMBLA算法定位精度显著提高,定位误差是MBLA的一半,是APIT算法的1/4,迭代次数是MBLA的1/3。
According to APIT algorithm and MBLA （Midnormal -based Area Localization Algontlam） had short with low localization precision and more iterative times, WMBLA （ Weighted Midnormal - based Localization Algorithm ） was proposed . This algorithm moved the midnormal of the line between two an- chor nodes in accordance with the ratio of two RSSI ranging values between the node to be localized and two anchor nodes, then to locate according to new midnormal. Simulation result shows that this algorithm significantly improves the localization precision, its locating error is half of MBLA and APIT algorithm＇ s quarter,iterative times are 1/3 of MBLA.
出处
《工业仪表与自动化装置》
2015年第2期69-72,共4页
Industrial Instrumentation & Automation
关键词
无线传感器网络
RSSI
加权垂直平分线定位算法
节点定位
wireless sensor networks（WSN）
RSSI
weighted midnormal -based localization algo-rithm（WMBLA）
node localization
