DocumentCode :
3296542
Title :
Analyzing error propagation in range-based multihop sensor localization
Author :
Huang, Baoqi ; Yu, Changbin ; Anderson, Brian D O
Author_Institution :
Res. Sch. of Inf. Sci. & Eng., Australian Nat. Univ., Canberra, ACT, Australia
fYear :
2009
fDate :
15-18 Dec. 2009
Firstpage :
865
Lastpage :
870
Abstract :
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 Crame¿r-Rao lower bound. Factors influencing error propagation are investigated carefully, and a divide and conquer method is presented to analyze error propagation in WSNs.
Keywords :
mobile radio; wireless sensor networks; Cramer-Rao lower bound; WSN; error propagation; location information; noisy range measurements; range-based multihop sensor localization; semiquantitative rules; wireless sensor networks; Australia; Covariance matrix; Error analysis; Parameter estimation; Power engineering and energy; Protocols; Routing; Target tracking; Wireless sensor networks; Working environment noise;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on
Conference_Location :
Shanghai
ISSN :
0191-2216
Print_ISBN :
978-1-4244-3871-6
Electronic_ISBN :
0191-2216
Type :
conf
DOI :
10.1109/CDC.2009.5399710
Filename :
5399710
Link To Document :
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