TALS: Trigonometry-based Ad-hoc Localization System for wireless sensor networks

Node localizations techniques are a critical part in many wireless sensor network (WSN) applications. There are several challenges for building an efficient localization system that is suitable for wireless sensor networks, mainly, reducing computational complexity and communication overhead. For example, solving an over constraint set of linear equations via least square approximations and utilizing square root operations are computationally intensive. Moreover, flooding techniques used for transmitting the locations of the anchors wastes bandwidth and energy. In this context, the Trigonometric based Ad-hoc Localization System (TALS) is an anchor-based range-based localization system that utilizes trigonometric identities and properties to compute the position of the node. TALS is designed to address the above challenges without deteriorating the quality of the estimates by taking advantage of redundancy and data fusion techniques. TALS is simulated and compared against popular localization techniques where it presented superiority against those techniques.