Dynamic fine-grained localization in Ad-Hoc networks of sensors
Proceedings of the 7th annual international conference on Mobile computing and networking
Range-free localization schemes for large scale sensor networks
Proceedings of the 9th annual international conference on Mobile computing and networking
The Node Distribution of the Random Waypoint Mobility Model for Wireless Ad Hoc Networks
IEEE Transactions on Mobile Computing
Localization for mobile sensor networks
Proceedings of the 10th annual international conference on Mobile computing and networking
Localized Protocols for Ad Hoc Clustering and Backbone Formation: A Performance Comparison
IEEE Transactions on Parallel and Distributed Systems
Rendered path: range-free localization in anisotropic sensor networks with holes
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Distributed Localization Using a Moving Beacon in Wireless Sensor Networks
IEEE Transactions on Parallel and Distributed Systems
Sensor Position Determination with Flying Anchors in Three-Dimensional Wireless Sensor Networks
IEEE Transactions on Mobile Computing
Range-based localization for UWB sensor networks in realistic environments
EURASIP Journal on Wireless Communications and Networking - Special issue on theoretical and algorithmic foundations of wireless ad hoc and sensor networks
Secure Distance-Based Localization in the Presence of Cheating Beacon Nodes
IEEE Transactions on Mobile Computing
Using clustering information for sensor network localization
DCOSS'05 Proceedings of the First IEEE international conference on Distributed Computing in Sensor Systems
On the mechanisms and effects of calibrating RSSI measurements for 802.15.4 radios
EWSN'10 Proceedings of the 7th European conference on Wireless Sensor Networks
Relative location estimation in wireless sensor networks
IEEE Transactions on Signal Processing
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An ad hoc network of small robots (sensor nodes) adjusting their positions to establish network connectivity would be able to provide a communication infrastructure in an urban battlefield environment. A sensor node would be capable of moving to a particular position to establish network connectivity, provided it knows its current position, positions of other sensor nodes and the radio propagation characteristics of the sensor area. In this paper, we present a pseudo formation control based trajectory algorithm to determine the optimal trajectory of a moving beacon used in localization of the sensor nodes in real-time. The trajectory and the frequency of transmission of the GPS based position information of the moving beacon influences the accuracy of localization and the power consumed by the beacon to localize. Localization accuracy and reduction in the number of position information messages can be achieved, in real-time, by determining the optimal position from where the beacon should transmit its next position information. This will decrease the time required to localize, and power consumed by the beacon in comparison to random or predetermined trajectories. We first show that optimal position determination is a pseudo formation control problem. Next, we show the pseudo formation control problem formulated as an unconstrained optimization problem under the free space propagation model. We further present the modeling of the beacon incorporating the trajectory algorithm based on the pseudo formation control in a discrete event simulator. Simulation results, comparing the performance of localization with pseudo formation control based trajectory against random waypoint and predetermined trajectories for the beacon are presented. The simulation results show that the localization accuracy is significantly improved along with reduction in the number of position information messages transmitted when the beacon traverses along the pseudo formation control based trajectory.