TY - GEN
T1 - Robust localization in wireless sensor networks
AU - Fan, Rongfei
AU - Jiang, Hai
AU - Wu, Shaohua
AU - Zhang, Naitong
PY - 2008
Y1 - 2008
N2 - Localization is essential for wireless sensor networks (WSNs). It is to determine the positions of sensor nodes based on incomplete mutual distance measurements. In this paper, to measure the accuracy of localization algorithms, a ranging error model for time of arrival (TOA) estimation is given, and the Cramer-Rao Bound (CRB) for the model is derived. Then an algorithm is proposed to deal with the case where 1) ranging error accumulation exists, and 2) some anchor nodes broadcast inaccurate/wrong location information. Specifically, we first present a ranging error-tolerable topology reconstruction method without knowledge of anchor node locations. Then we propose a method to detect anchor nodes that have inaccurate/wrong position information. Simulations demonstrate the improvement of our algorithm compared to others.
AB - Localization is essential for wireless sensor networks (WSNs). It is to determine the positions of sensor nodes based on incomplete mutual distance measurements. In this paper, to measure the accuracy of localization algorithms, a ranging error model for time of arrival (TOA) estimation is given, and the Cramer-Rao Bound (CRB) for the model is derived. Then an algorithm is proposed to deal with the case where 1) ranging error accumulation exists, and 2) some anchor nodes broadcast inaccurate/wrong location information. Specifically, we first present a ranging error-tolerable topology reconstruction method without knowledge of anchor node locations. Then we propose a method to detect anchor nodes that have inaccurate/wrong position information. Simulations demonstrate the improvement of our algorithm compared to others.
KW - Cramer-rao bound
KW - Localization
KW - Topology reconstruction
KW - Wireless sensor networks
UR - http://www.scopus.com/inward/record.url?scp=51249103354&partnerID=8YFLogxK
U2 - 10.1109/ICC.2008.790
DO - 10.1109/ICC.2008.790
M3 - Conference contribution
AN - SCOPUS:51249103354
SN - 9781424420742
T3 - IEEE International Conference on Communications
SP - 4209
EP - 4213
BT - ICC 2008 - IEEE International Conference on Communications, Proceedings
T2 - IEEE International Conference on Communications, ICC 2008
Y2 - 19 May 2008 through 23 May 2008
ER -