Abstract
This article proposes a new localization method for wireless sensor networks (WSNs) in which four beacon nodes (BNs) are equipped with a directional antenna with special transmission capabilities for sending wireless beacon signals throughout the sensor network. Each beacon node’s directional antenna rotates and broadcasts its angular bearings. Using trigonometry, the proposed method is based on angle-of-arrival estimation technique that does not increase the system cost of the sensor nodes or decrease the positioning accuracy. We present the performance of the proposed method obtained from error analysis and computer simulations.
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