Title :
Total Least-Squares Solution of Active Target Localization Using TDOA and FDOA Measurements in WSN
Author :
Sun, Xiaoyan ; Li, Jiandong ; Huang, Pengyu ; Pang, Jiyong
Author_Institution :
Xidian Univ., Xian
Abstract :
Active target localization is one of the study emphases in wireless sensor network (WSN). When time difference of arrival (TDOA) and frequency difference of arrival (FDOA) measurements are used to target localization, the measurements are nonlinearly related to the target location parameters. By the analysis of TDOA and FDOA linearized equations, when there exists sensor location error, active target localization using TDOA and FDOA measurements is a typical total least-squares (TLS) problem. The TLS solution for active target localization is presented in this paper. Its minimum square error ( MSE) is compared with Cramer-Rao lower bound (CRLB) through the simulation results.
Keywords :
least mean squares methods; time-of-arrival estimation; wireless sensor networks; Cramer-Rao lower bound; active target localization; frequency difference of arrival; minimum square error; time difference of arrival; total least-squares problem; wireless sensor network; Closed-form solution; Equations; Frequency measurement; Information science; Intserv networks; Iterative methods; Matrix decomposition; Sun; Time measurement; Wireless sensor networks; FDOA; TDOA; TLS; WSN;
Conference_Titel :
Advanced Information Networking and Applications - Workshops, 2008. AINAW 2008. 22nd International Conference on
Conference_Location :
Okinawa
Print_ISBN :
978-0-7695-3096-3
DOI :
10.1109/WAINA.2008.150
