Journal
PROCEEDINGS OF THE IEEE
Volume 107, Issue 11, Pages 2240-2264Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPROC.2019.2905854
Keywords
Sensors; Feature extraction; Wireless communication; Navigation; Position measurement; Wireless sensor networks; Atmospheric measurements; Localization; wireless networks; learning; soft information; Internet-of-Things; Localization-of-Things
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Funding
- Office of Naval Research [N62909-18-1-2017, N00014-16-1-2141]
- Spanish Ministry of Economy and Competitiveness MINECO under Ramon y Cajal Grant [RYC-2016-19383]
- Basque Center for Applied Mathematics (BCAM) Severo Ochoa Excellence Accreditation [SEV-2017-0718]
- European Union [703893]
- Copernicus Fellowship
- Marie Curie Actions (MSCA) [703893] Funding Source: Marie Curie Actions (MSCA)
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Location awareness is vital for emerging Internet-of-Things applications and opens a new era for Localization-of-Things. This paper first reviews the classical localization techniques based on single-value metrics, such as range and angle estimates, and on fixed measurement models, such as Gaussian distributions with mean equal to the true value of the metric. Then, it presents a new localization approach based on soft information (SI) extracted from intra- and inter-node measurements, as well as from contextual data. In particular, efficient techniques for learning and fusing different kinds of SI are described. Case studies are presented for two scenarios in which sensing measurements are based on: 1) noisy features and non-line-of-sight detector outputs and 2) IEEE 802.15.4a standard. The results show that SI-based localization is highly efficient, can significantly outperform classical techniques, and provides robustness to harsh propagation conditions.
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