Title :
Source localization by collaborating multiple measurements with inaccurate sensor positions
Author :
Xu, Zhen ; Wang, Jing
Author_Institution :
Sch. of Electron. & Inf. Eng., Beihang Univ., Beijing, China
Abstract :
Sensor position uncertainty can degrade the accuracy of source localization significantly in the wireless sensor networks In order to improve it, this paper develops an algorithm by collaborating TDOA and GROA measurements for the source localization in the presence of sensor location errors, derives the CRLB of a source location estimate in this condition, and also proposes an algebraic closed-form solution for it. The proposed algorithm is shown analytically to reach the CRLB accuracy for a far field source. The simulation results support the theoretical development and show better performance comparing with other algorithms.
Keywords :
sensor placement; time-of-arrival estimation; wireless sensor networks; GROA measurement; TDOA measurement; algebraic closed-form solution; far field source; sensor location errors; sensor positions; source localization; wireless sensor networks; Accuracy; Calibration; Closed-form solutions; Covariance matrix; Measurement uncertainty; Position measurement; Vectors; inaccuate positions; sensor networks; sourse localization;
Conference_Titel :
Information, Communications and Signal Processing (ICICS) 2011 8th International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4577-0029-3
DOI :
10.1109/ICICS.2011.6173621
