面向无源定位的直达波传感器识别算法  

Identification Algorithm of Line-of-Sight Sensors for Passive Localization

作　　者：苏志刚[1] 武瑞 郝敬堂[1] SU Zhi-gang;WU Rui;HAO Jing-tang(Sino-European Institute of Aviation Engineering,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学中欧航空工程师学院,天津300300

出　　处：《电子学报》2021年第6期1178-1186,共9页Acta Electronica Sinica

基　　金：天津市自然科学基金项目(No.17JCYBJC43100);中央高校基本科研业务费中国民航大学专项项目(No.3122016U006)。

摘　　要：围绕无线传感器网络(Wireless Sensor Network,WSN)在直达(Line-Of-Sight,LOS)与非直达(Non-Line-Of-Sight,NLOS)混合传播环境中目标无源定位精度提高问题,提出基于弧边凸包的残差检测(Residual Test based on Arc-edged Convex hull,RTAC)算法.RTAC算法利用各个传感器的测距残差分布特点,在极坐标系构建反映残差点分布的偏移圆模型,并利用最小弧边凸包对传感器分组与识别,实现对网络中全部LOS传感器的识别.仿真结果表明,RTAC算法能够在低计算复杂度下实现对LOS传感器的正确识别,且具有更优异的目标定位性能.RTAC算法是适用于混合传播环境中LOS传感器识别的高效算法.To improve the locating accuracy for wireless sensor networks(WSN)in the mixed propagation environment of non-line-of-sight(NLOS)and line-of-sight(LOS)during passive localization,an algorithm named residual test based on arc-edged convex hull(RTAC)is proposed.RTAC algorithm uses the distribution characteristics of ranging residuals of sensors to construct an offset circle model reflecting the distribution of residual points in the polar coordinate system,and uses the minimal arc-edged convex hull to group and identify the sensors in order to realize the LOS sensor identification in the network.The simulation results demonstrate that RTAC algorithm can realize the correct identification of LOS sensors under a lower computational complexity,and can obtain better location performance.RTAC algorithm is an efficient algorithm for LOS sensor identification in mixed propagation environment.

关 键 词：无线传感器网络 无源定位 混合传播环境 测距残差 偏移圆 弧边凸包 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]