计算机科学 ›› 2016, Vol. 43 ›› Issue (6): 127-130.doi: 10.11896/j.issn.1002-137X.2016.06.026
曲强,吴新杰,陈雪波
QU Qiang, WU Xin-jie and CHEN Xue-bo
摘要： 免携带设备目标定位不需要目标携带任何电子设备或标签来对人或其他物体进行定位。针对现有射频层析成像算法在多径环境中定位精度不理想的问题,提出了一种基于贝叶斯背景模型的定位算法。该算法首先将斜拉普拉斯分布和贝叶斯理论相结合来建立贝叶斯背景模型,用于排除冗余链路；然后对接收信号强度的变化值进行加权处理,从而减小多径效应对目标定位的干扰；最后引入目标位置的后验估计均值对目标位置进行修正,提高定位精度。实验结果表明,该定位算法具有可行性和有效性。
| [1] Saeed A,Kosba A E,Youssef M.Ichnaea A Low overhead Robust WLAN Device free Passive Localization System[J].IEEE J.Sel.Topics Signal Process,2013,8(1):5-15 [2] Jiang X,Kaishun W,Youwen Y,et al.Pilot:Passive device-free indoor localization using channel state information[C]∥Proceedings of ICDCS.2013:236-245 [3] Patwari N,Agrawal P.Effects of Correlated Shadowing:Con-nectivity,Localization,and RF Tomography[C]∥Information Processing in Sensor Networks.2008:82-93 [4] Wilson J,Patwari N.Radio tomographic imaging with wireless networks[J].IEEE Trans.Mobile Comput.,2010,9(5):621-632 [5] Martin R K,Anderson C,Thomas R W,et al.Modelling and ana-lysis of radio tomography[C]∥2011 4th IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP).Dec.2011 [6] Chen X,Edelstein A,Li Y,et al.Sequential Monte Carlo for simultaneous passive device-free tracking and sensor localization using received signal strength measurements[C]∥ACM/IEEE Information Processing in Sensor Networks (IPSN).April 2011 [7] Wilson J,Patwari N.See through walls:Motion tracking using variance-based radio tomography networks[J].IEEE Trans.Mobile Comput.,2011,10(5):612-621 [8] Zhao Y,Patwari N.Noise reduction for variance-based device-free localization and tracking[C]∥Proc.8th IEEE Conf.SECON.Salt Lake City,UT,USA,Jun.2011 [9] Zhao Y,Patwari N,Phillips J M,et al.Radio tomographic imaging and tracking of stationary and moving people via kernel distance[C]∥Proc.12th Int.Conf.IPSN.New York,NY,USA,2013:229-240 [10] Maas D C.Radio frequency sensing measurements and methods for location classification in wireless networks[D].Utah Univ.,2014 [11] Kaltiokallio O,Bocca M,Patwari N.Enhancing the accuracy of radio tomographic imaging using channel diversity[C]∥Proc.9th IEEE Int.Conf.Mobile Ad Hoc Sensor Systems.Oct.2012 [12] Hao Xiao-xi,Yang Zhi-yong,Guo Xue-mei.A method of link selection for radio frequency tomography with Bayesian compressive sensing[J].Chinese Journal of Electronics,2013,41(12):2507-2512(in Chinese) 郝晓曦,杨志勇,郭雪梅.BCS实现的射频层析成像链路选择方法 [J].电子学报,2013,1(12):2507-2512 [13] Wilson J,Patwari N.A fade-level skew-Laplace signal strength model for device-free localization with wireless networks[J].IEEE Trans.Mobile Comput.,2012,11(6):947-958 [14] Yang Zhi-yong,Huang Kai-de,Wang Guo-li.A new sparse reconstruction algorithm for device-free localization with sensor network[C]∥Proceedings of the 9th Asian Control Conference.2013:1-6 [15] Haines T S F,Xiang T.background subtraction with dirichletprocess mixture models[J].IEEE PAMI,2014,36(4):670-683 [16] Haines T S F,Xiang T.Background Subtraction with Dirichlet Processes[C]∥Proc.12th European Conf.Computer Vision (ECCV).2012 [17] Kaltiokallio O,Bocca M,Patwari N.A fade level-based spatial model for radio tomographic imaging[J].IEEE Trans.Mobile Comput.,2014,13(6):1159-1172 |
| No related articles found! |
|
||
首页