Triple Mobile Anchors Approach for Localization in WSN

Abstract

Localization in WSNs provides critical data for decisions when collecting data from wide area spread sensors. Using embedded GPS unit on sensor board is not a cost-effective solution Therefore; researchers have paid more attention to locate sensors in WSNs without using many GPSs units. Several algorithms have been suggested for this purpose. However, they are different in terms of cost and accuracy. This paper is going to suggest a new range-based algorithm called Triple Mobile Anchors for Localization (TMAL). This algorithm is based on three mobile sensors that form a mobile triangle to locate unknown sensors. As other approaches, it uses Receive Signal Strength indicator (RSSI). Besides, the algorithm assumes that the mobile anchors are chargeable to avoid the energy issue. Based on a method known as the Relative Side Coordinates (RSC) the simulation results emphasis of the proposed algorithm compare by RELMA-method1 and RELMA-method 2, the TMAL has good accuracy and low cost. It shows how to control the accuracy based on the area of the mobile triangle.