Title :
A UWB transmit-only based scheme for multi-tag support in a millimeter accuracy localization system
Author :
Rowe, N.C. ; Fathy, Aly E. ; Kuhn, M.J. ; Mahfouz, M.R.
Author_Institution :
EECS Dept., Univ. of Tennessee, Knoxville, TN, USA
Abstract :
Ultra Wideband (UWB) wireless positioning systems have many advantages for tracking and locating items in indoor environments. Surgical navigation and industrial process control are potential applications for high accuracy UWB localization systems with millimeter accuracy. Several experimental systems have achieved very high accuracy, but have generally neglected significant system features like multi-tag access. This paper outlines a UWB localization system, which addresses both multi-tag performance and localization accuracy using UWB transmit-only digital communication and time difference of arrival (TDOA). The scheme takes advantage of a digital sampling circuit that can be used for both sub-sampling and data reception. Preliminary 1-D experimental results using this system resulted in a total system update rate of 889 Hz and localization accuracy of 3.25mm.
Keywords :
direction-of-arrival estimation; indoor communication; radio networks; sampling methods; time-of-arrival estimation; ultra wideband communication; UWB localization systems; UWB transmit-only based scheme; UWB transmit-only digital communication; data reception; digital sampling circuit; frequency 889 Hz; indoor environments; industrial process control; item localization; item tracking; millimeter accuracy localization system; multitag access; multitag localization accuracy; multitag performance accuracy; multitag support; surgical navigation; time difference-of-arrival; ultra wideband wireless positioning systems; Accuracy; Base stations; Equations; Mathematical model; Robustness; Throughput; Wireless communication;
Conference_Titel :
Wireless Sensors and Sensor Networks (WiSNet), 2013 IEEE Topical Conference on
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4673-3104-3
Electronic_ISBN :
978-1-4673-2931-6
DOI :
10.1109/WiSNet.2013.6488616
