椭球约束下减小三维定位中的非视距误差
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摘要
采用精度较高的TOA测距方法对位于三维表面的节点进行定位时,非视距传播现象会造成测距值出现较大的正向误差。针对非视距误差提出一种判别算法,对参与定位的锚节点进行筛选,剔除掉非视距误差较大的锚节点,再用残差加权算法进行最终的位置估计。与最小二乘法和残差加权法相比,能够有效地减小非视距误差的影响,具有更高的定位精度。
TOA(Time of Arrival)ranging method is generally used for locating the nodes on 3D surface to obtain higher accuracy, while the Non-Line-of-Sight(NLOS)propagation phenomenon will cause larger positive error of TOA ranging value. A discriminant algorithm is proposed to identify the anchor nodes with larger NLOS error and screen out the anchor nodes to be used for node localization, and then the final location can be estimated with the residual weighting algorithm.Compared with the least square method and the Residual Weighting Algorithm(Rwgh), the proposed algorithm can effectively reduce the influence of NLOS error and has higher positioning accuracy.
TOA(Time of Arrival)ranging method is generally used for locating the nodes on 3D surface to obtain higher accuracy, while the Non-Line-of-Sight(NLOS)propagation phenomenon will cause larger positive error of TOA ranging value. A discriminant algorithm is proposed to identify the anchor nodes with larger NLOS error and screen out the anchor nodes to be used for node localization, and then the final location can be estimated with the residual weighting algorithm.Compared with the least square method and the Residual Weighting Algorithm(Rwgh), the proposed algorithm can effectively reduce the influence of NLOS error and has higher positioning accuracy.
引文
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[6]霍倩倩,田翔,姜琳,等.基于无线通信TOA值对终端定位问题的研究[J].计算机工程与应用,2017,53(13):252-258.
[7]Chan Y T,Tsui W Y,So H C,et al.Time-of-arrival based localization under NLOS conditions[J].IEEE Transactions on Vehicular Technology,2006,55(1):17-24.
[8]Su Z,Shao G,Liu H.Semidefinite programming for NLOSerror mitigation in TDOA Localization[J].IEEE Communications Letters,2017,99:1.
[9]温培博,李行健,杨文.多基站下基于信号到达时间的室内三维定位[J].数学的实践与认识,2017,47(14):151-161.
[10]王日明,冯久超.改进的对数衰减动态非视距定位[J].应用科学学报,2014,32(4):372-378.
[11]何杰,吴得泱,李希飞,等.利用测距值优化的室内三维定位算法[J].北京邮电大学学报,2017,40(3):37-42.
[12]Chen P C.A non-line-of-sight error mitigation algorithm in location estimation[C]//Proceedings of Wireless Communications and Networking Conference,1999:316-320.
[13]肖竹,陈杰,王东,等.严重遮挡非视距环境下的三维定位方法[J].通信学报,2015,36(8):68-75.
[14]Yu K,Guo Y J.Statistical NLOS identification based on AOA,TOA,and signal strength[J].IEEE Transactions on Vehicular Technology,2009,58(1):274-286.
[15]Pang L L,Xie J Y,Lu S Y,et al.A NLOS error suppression algorithm based on elastic enclosing circle[C]//Proceedings of IEEE International Conference on Ubiquitous Wireless Broadband,2016:1-4.に邇
[2]杨凤波,程然,赵丹玲.基于多元线性回归分析和Chan算法的三维精确定位研究[J].数学的实践与认识,2017,47(14):173-182.
[3]杨天池,金梁,程娟.一种基于TOA定位的CHAN改进算法[J].电子学报,2009,37(4):819-822.
[4]王昕,王宗欣,刘石.一种考虑非视线传播影响的TOA定位算法[J].通信学报,2001,22(3):1-8.
[5]杨浩,周俊奇,孟庆民.一种基于TDOA/AOA的混合三维定位算法[J].南京邮电大学学报(自然科学版),2012,32(6):31-36.
[6]霍倩倩,田翔,姜琳,等.基于无线通信TOA值对终端定位问题的研究[J].计算机工程与应用,2017,53(13):252-258.
[7]Chan Y T,Tsui W Y,So H C,et al.Time-of-arrival based localization under NLOS conditions[J].IEEE Transactions on Vehicular Technology,2006,55(1):17-24.
[8]Su Z,Shao G,Liu H.Semidefinite programming for NLOSerror mitigation in TDOA Localization[J].IEEE Communications Letters,2017,99:1.
[9]温培博,李行健,杨文.多基站下基于信号到达时间的室内三维定位[J].数学的实践与认识,2017,47(14):151-161.
[10]王日明,冯久超.改进的对数衰减动态非视距定位[J].应用科学学报,2014,32(4):372-378.
[11]何杰,吴得泱,李希飞,等.利用测距值优化的室内三维定位算法[J].北京邮电大学学报,2017,40(3):37-42.
[12]Chen P C.A non-line-of-sight error mitigation algorithm in location estimation[C]//Proceedings of Wireless Communications and Networking Conference,1999:316-320.
[13]肖竹,陈杰,王东,等.严重遮挡非视距环境下的三维定位方法[J].通信学报,2015,36(8):68-75.
[14]Yu K,Guo Y J.Statistical NLOS identification based on AOA,TOA,and signal strength[J].IEEE Transactions on Vehicular Technology,2009,58(1):274-286.
[15]Pang L L,Xie J Y,Lu S Y,et al.A NLOS error suppression algorithm based on elastic enclosing circle[C]//Proceedings of IEEE International Conference on Ubiquitous Wireless Broadband,2016:1-4.に邇