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Relative location estimation in wireless sensor networks
Abstract
Self-configuration in wireless sensor networks is a general class of estimation problems that we study via the Cramer-Rao bound (CRB). Specifically, we consider sensor location estimation when sensors measure received signal strength (RSS) or time-of-arrival (TOA) between themselves and neighboring sensors. A small fraction of sensors in the network have a known location, whereas the remaining locations must be estimated. We derive CRBs and maximum-likelihood estimators (MLEs) under Gaussian and log-normal models for the TOA and RSS measurements, respectively. An extensive TOA and RSS measurement campaign in an indoor office area illustrates MLE performance. Finally, relative location estimation algorithms are implemented in a wireless sensor network testbed and deployed in indoor and outdoor environments. The measurements and testbed experiments demonstrate 1-m RMS location errors using TOA, and 1- to 2-m RMS location errors using RSS.
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Citations
Cited by
Distributed weighted-multidimensional scaling for node localization in sensor networks
Costa, J. A., Patwari, N., & Hero, A. O. (2006) · ACM Transactions on Sensor Networks · doi:10.1145/1138127.1138129 · Cited by 586
Self-citationTomic, S., Beko, M., & Dinis, R. (2015) · IEEE Transactions on Vehicular Technology · doi:10.1109/tvt.2014.2334397 · Cited by 353
Sensor Network Localization on the Group of Three-Dimensional Displacements
Peters, J. R., Borra, D., Paden, B. E., & Bullo, F. (2015) · SIAM Journal on Control and Optimization · doi:10.1137/140957743 · Cited by 16
Metadata
- Authors
- Patwari, N., Hero, A. O., Perkins, M., Correal, N. S., & O'Dea, R. J.
- Venue
- IEEE Transactions on Signal Processing
- Published
- 2003-08
- Volume
- 51
- Issue
- 8
- Pages
- 2137-2148
- ISSN
- 1053-587X (ISSN-L)
- OpenAlex
- W2124178852
- Cited by
- 1,879
- References
- 0
- FWCI
- 53.97
- Type
- journal article
- Language
- en
- Open access
- closed
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- Patwari, N., Hero, A. O., Perkins, M., Correal, N. S., & O'Dea, R. J. (2003). Relative location estimation in wireless sensor networks. IEEE Transactions on Signal Processing. https://doi.org/10.1109/tsp.2003.814469
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