The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Dynamic fine-grained localization in Ad-Hoc networks of sensors
Proceedings of the 7th annual international conference on Mobile computing and networking
Localized algorithms in wireless ad-hoc networks: location discovery and sensor exposure
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Localization from mere connectivity
Proceedings of the 4th ACM international symposium on Mobile ad hoc networking & computing
GPS-Free Positioning in Mobile ad-hoc Networks
HICSS '01 Proceedings of the 34th Annual Hawaii International Conference on System Sciences ( HICSS-34)-Volume 9 - Volume 9
Range-free localization schemes for large scale sensor networks
Proceedings of the 9th annual international conference on Mobile computing and networking
Distributed localization in wireless sensor networks: a quantitative comparison
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue: Wireless sensor networks
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Location discovery problem in wireless sensor networks (WSN) is the process that sensor nodes collaborate to determine their positions. To solve this problem, high-cost sensor nodes with known locations, called anchors, are required. We propose a novel bilateration locationing algorithm and an associated anchor deployment scheme that can reduce the number of required anchors and location errors. The novelty in the bilateration algorithm is that it generally requires only two neighbor sensors with known locations to determine a node's location. To make this algorithm effective in practice, we propose to deploy three anchors as a group. Therefore, sensors around the anchors can first locate themselves and then sensors that are far away can gradually determine their locations. We conduct theoretical analysis and extensive simulations. Comparing with the state-of-the-art location discovery approaches, our algorithm provides higher accurate location estimations with fewer anchor's and lower communication cost.