Virtual Ruler: Mobile Beacon Based Distance Measurements for Indoor Sensor Localization

@inproceedings{citeulike:2113734, abstract = {In sensor localization, ultrasound based distance measurements will have large errors if line-of-sight paths are blocked between pairwise sensors. Because these outliers, once mixed together with other correct distance measurements, are difficult for localization algorithms to identify, we propose to exclude the outliers in the first step of distance measurement. Although the distance between pairwise sensors measured by ultrasound can have multiple values due to the multipath effect, our experiments find that a sensor's incorrect position, estimated from the distance measurement along a reflected path instead of a straight line, is always mirrored to the sensor's correct position. Based on this phenomena, we propose to use mobile beacons to measure the distance between pairwise sensors from multiple perspectives and filter incorrect values through a statistical approach. Our performance evaluation shows that the proposed algorithm can achieve better localization results than previous approaches in an indoor environment where multipath effects cannot be avoided}, author = {Wang, Chen and Ding, Yong and Xiao, Li }, booktitle = {Mobile Adhoc and Sensor Systems (MASS), 2006 IEEE International Conference on}, citeulike-article-id = {2113734}, journal = {Mobile Adhoc and Sensor Systems (MASS), 2006 IEEE International Conference on}, keywords = {indoor, localization, multipath, ultrasound}, pages = {326--335}, posted-at = {2007-12-14 13:52:43}, priority = {2}, title = {Virtual Ruler: Mobile Beacon Based Distance Measurements for Indoor Sensor Localization}, url = {http://ieeexplore.ieee.org/xpls/abs\_all.jsp?arnumber=4053918}, year = {2006} }

TY - CONF ID - citeulike:2113734 L3 - citeulike-article-id:2113734 TI - Virtual Ruler: Mobile Beacon Based Distance Measurements for Indoor Sensor Localization T2 - Mobile Adhoc and Sensor Systems (MASS), 2006 IEEE International Conference on JF - Mobile Adhoc and Sensor Systems (MASS), 2006 IEEE International Conference on SP - 326 EP - 335 N2 - In sensor localization, ultrasound based distance measurements will have large errors if line-of-sight paths are blocked between pairwise sensors. Because these outliers, once mixed together with other correct distance measurements, are difficult for localization algorithms to identify, we propose to exclude the outliers in the first step of distance measurement. Although the distance between pairwise sensors measured by ultrasound can have multiple values due to the multipath effect, our experiments find that a sensor's incorrect position, estimated from the distance measurement along a reflected path instead of a straight line, is always mirrored to the sensor's correct position. Based on this phenomena, we propose to use mobile beacons to measure the distance between pairwise sensors from multiple perspectives and filter incorrect values through a statistical approach. Our performance evaluation shows that the proposed algorithm can achieve better localization results than previous approaches in an indoor environment where multipath effects cannot be avoided KW - indoor KW - localization KW - multipath KW - ultrasound AU - Wang, Chen AU - Ding, Yong AU - Xiao, Li PY - 2006/// UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4053918 ER -