Radio interferometric geolocation
Proceedings of the 3rd international conference on Embedded networked sensor systems
Node density independent localization
Proceedings of the 5th international conference on Information processing in sensor networks
Spinning beacons for precise indoor localization
Proceedings of the 6th ACM conference on Embedded network sensor systems
Localization in cooperative Wireless Sensor Networks: A review
CSCWD '09 Proceedings of the 2009 13th International Conference on Computer Supported Cooperative Work in Design
Radio interferometric angle of arrival estimation
EWSN'10 Proceedings of the 7th European conference on Wireless Sensor Networks
Cryptography and Security
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Today, RF based indoor node localization and tracking techniques predominantly rely on received signal strength (RSS), proximity information, or some sort of a priori mapping of the RF environment. However, due to nonideal RF propagation caused by effects such as reflection, refraction, scattering and multipath, as well as the dynamically changing environment, these solutions have limited accuracy. In this work, we investigate the feasibility of RF phase based tracking indoors. First, we present a fine-grained map of RF phase measurements taken in an office area: a harsh RF environment with windows, furniture and a steel door. Then, we present an approach to carry out one-dimensional tracking under such circumstances. Finally, we present preliminary experimental tracking results, with accuracy in the centimeter range, that justify the feasibility of the proposed technique.