Dynamic fine-grained localization in Ad-Hoc networks of sensors
Proceedings of the 7th annual international conference on Mobile computing and networking
A directionality based location discovery scheme for wireless sensor networks
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
The bits and flops of the n-hop multilateration primitive for node localization problems
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
Robust Positioning Algorithms for Distributed Ad-Hoc Wireless Sensor Networks
ATEC '02 Proceedings of the General Track of the annual conference on USENIX Annual Technical Conference
Recursive Position Estimation in Sensor Networks
ICNP '01 Proceedings of the Ninth International Conference on Network Protocols
Novel self-configurable positioning technique for multihop wireless networks
IEEE/ACM Transactions on Networking (TON)
The effects of ranging noise on multihop localization: an empirical study
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
MoteTrack: a robust, decentralized approach to RF-Based location tracking
LoCA'05 Proceedings of the First international conference on Location- and Context-Awareness
IEEE Communications Magazine
A Collaborative Model for Wireless Sensor Networks Applied to Museums' Environmental Monitoring
CDVE '08 Proceedings of the 5th international conference on Cooperative Design, Visualization, and Engineering
A collaborative model for representing wireless sensor networks' entities and properties
Proceedings of the 3nd ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
Centralized mobile SensorGroup for exploring border of target area
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Improving users' manipulation and control on WSNs through collaborative sessions
International Journal of Knowledge and Web Intelligence
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In this paper we study the problem of determining the location of nodes in a wireless sensor network, describing a fully decentralized algorithm called HECOPS, where every node estimates its own position after interacting with other nodes. Only a limited number of nodes have exact knowledge of their position coordinates. Any node can, however, be selected as a reference. We establish a ranking system to determine the reliability of each estimated position. This leads to a novel approach for position calculation that uses fewer but more reliable landmarks, thus reducing data communication and limiting error propagation. We present heuristics that are used to reduce the effects of measurement errors, including a scheme to calibrate range measurements by comparing, whenever possible, the estimated distance with the actual distance between a pair of nodes. Experiments demonstrate that the algorithm is superior to a previously proposed method in terms of its ability to compute correct coordinates under a wider variety of conditions and its robustness to measurement errors.