Proceedings ArticleDOI
Radio interferometric geolocation
Miklós Maróti,Peter Volgyesi,Sebestyén Dóra,Branislav Kusý,Andras Nadas,Akos Ledeczi,Gyorgy Balogh,K. Molnar +7 more
- pp 1-12
Reads0
Chats0
TLDR
A novel radio interference based sensor localization method for wireless sensor networks that does not require any sensors other than the radio used for wireless communication and has an average localization error as small as 3 cm and a range of up to 160 meters.Abstract:
We present a novel radio interference based sensor localization method for wireless sensor networks. The technique relies on a pair of nodes emitting radio waves simultaneously at slightly different frequencies. The carrier frequency of the composite signal is between the two frequencies, but has a very low frequency envelope. Neighboring nodes can measure the energy of the envelope signal as the signal strength. The relative phase offset of this signal measured at two receivers is a function of the distances between the four nodes involved and the carrier frequency. By making multiple measurements in an at least 8-node network, it is possible to reconstruct the relative location of the nodes in 3D. Our prototype implementation on the MICA2 platform yields an average localization error as small as 3 cm and a range of up to 160 meters. In addition to this high precision and long range, the other main advantage of the Radio Interferometric Positioning System (RIPS) is the fact that it does not require any sensors other than the radio used for wireless communication.read more
Citations
More filters
Dissertation
Development of a system for tracking objects in a confined space
TL;DR: In this paper, the authors present a concept system that could be used as the base for a system that can track objects accurately in a confined space using a model of the Reactor Pressure Vessel (RPV).
Dissertation
Géo localisation en environnement fermé des terminaux mobiles
TL;DR: This work presents a novel approach for the WLAN indoor geo-location by using coordinates clustering, which allows overcoming the limitations of NLOS methods without applying any of mitigation, approximation, prior correction, or filtering approaches.
Dissertation
Efficient and secure network services in wireless sensor networks
TL;DR: This research presents a probabilistic procedure to establish a baseline for estimating the strength of the signal-to-noise ratio in relation to the number of cells in a relay network.
Proceedings ArticleDOI
Wireless Sensor Networks In Geophysics
TL;DR: In this article, the authors review the capabilities and limitations of WSNs in geophysics applications, including long-term monitoring and assessment of infrastructure, investigations in ecology and environment, tracking fluids or contaminant migration, and resource and exploration studies.
Dissertation
Resilient Data Aggregation and Aggregator Node Election in Sensor Networks
TL;DR: This dissertation proposes countermeasures against this type of attack – i.e., CORA and RANBAR – that are based on statistical hypothesis testing and sample filtering and are able to detect an attack or even filter out the compromised measurements.
References
More filters
Proceedings ArticleDOI
The Cricket location-support system
TL;DR: The randomized algorithm used by beacons to transmit information, the use of concurrent radio and ultrasonic signals to infer distance, the listener inference algorithms to overcome multipath and interference, and practical beacon configuration and positioning techniques that improve accuracy are described.
Journal ArticleDOI
System architecture directions for networked sensors
TL;DR: Key requirements are identified, a small device is developed that is representative of the class, a tiny event-driven operating system is designed, and it is shown that it provides support for efficient modularity and concurrency-intensive operation.
Proceedings ArticleDOI
The flooding time synchronization protocol
TL;DR: The FTSP achieves its robustness by utilizing periodic flooding of synchronization messages, and implicit dynamic topology update and comprehensive error compensation including clock skew estimation, which is markedly better than that of the existing RBS and TPSN algorithms.
Proceedings ArticleDOI
Ad hoc positioning system (APS)
Dragos Niculescu,Badri Nath +1 more
TL;DR: This work is proposing APS - a distributed, hop by hop positioning algorithm, that works as an extension of both distance vector routing and GPS positioning in order to provide approximate location for all nodes in a network where only a limited fraction of nodes have self location capability.
Journal ArticleDOI
Single tone parameter estimation from discrete-time observations
D. Rife,R. Boorstyn +1 more
TL;DR: Estimation of the parameters of a single-frequency complex tone from a finite number of noisy discrete-time observations is discussed and appropriate Cramer-Rao bounds and maximum-likelihood estimation algorithms are derived.