Title :
Position estimation using ultra-wideband time difference of arrival measurements
Author :
Xu, J. ; Ma, M. ; Law, C.L.
Author_Institution :
Nanyang Technol. Univ., Singapore
Abstract :
Positioning enables many applications such as emergency services, target identification and tracking, health monitoring and geographic routing and so on. Time difference of arrival (TDOA) ranges measured using ultra-wideband signals are used in the position estimation process. A TDOA error-minimising localisation method has been proposed to estimate the locations of blind nodes and its performance is investigated in both LOS and NLOS propagations. Theoretical lower bound on the variance of the blind node positions has also been derived for the LOS situation.
Keywords :
time-of-arrival estimation; ultra wideband communication; blind node location; emergency services; error-minimising localisation method; geographic routing; health monitoring; position estimation; target identification; ultrawideband time difference of arrival measurements;
Journal_Title :
Science, Measurement & Technology, IET
DOI :
10.1049/iet-smt:20060089