TY - GEN
T1 - Analyzing Error Propagation in Range-based Multihop Sensor Localization
AU - Huang, Baoqi
AU - Yu, Changbin
AU - Anderson, Brian D.O.
PY - 2009
Y1 - 2009
N2 - Location information for sensors in wireless sensor networks (WSNs) is essential to many tasks. If sensors are mobile and are to be controlled to certain locations, localizability is indispensable. In a noisy environment, locations must be estimated, and the question of location error and its magnitude becomes important. Error is a function of the positioning and density of anchors in a WSN, and the error can propagate (i.e. increase) as sensors progressively more distant from anchors are localized. Understanding the semi-quantitative rules governing error propagation is quite helpful to designing WSNs and improving performances of localization systems. This paper deals with error propagation in 1-Dimensional WSNs with noisy range measurements in terms of the Cramér-Rao Lower Bound. Factors influencing error propagation are investigated carefully, and a divide and conquer method is presented to analyze error propagation in WSNs.
AB - Location information for sensors in wireless sensor networks (WSNs) is essential to many tasks. If sensors are mobile and are to be controlled to certain locations, localizability is indispensable. In a noisy environment, locations must be estimated, and the question of location error and its magnitude becomes important. Error is a function of the positioning and density of anchors in a WSN, and the error can propagate (i.e. increase) as sensors progressively more distant from anchors are localized. Understanding the semi-quantitative rules governing error propagation is quite helpful to designing WSNs and improving performances of localization systems. This paper deals with error propagation in 1-Dimensional WSNs with noisy range measurements in terms of the Cramér-Rao Lower Bound. Factors influencing error propagation are investigated carefully, and a divide and conquer method is presented to analyze error propagation in WSNs.
UR - http://www.scopus.com/inward/record.url?scp=77950817919&partnerID=8YFLogxK
U2 - 10.1109/CDC.2009.5399710
DO - 10.1109/CDC.2009.5399710
M3 - Conference contribution
SN - 978-1-4244-3871-6
SP - 865
EP - 870
BT - Proceedings of the 48th IEEE Conference on Decision and Control held jointly with 2009 28th Chinese Control Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 48th IEEE Conference on Decision and Control held jointly with 2009 28th Chinese Control Conference, CDC/CCC 2009
Y2 - 15 December 2009 through 18 December 2009
ER -