Abstract:
The position accuracy of range free localization is a fundamental problem in Wireless Sensor
Networks (WSNs). The accuracy of the localization algorithm greatly impacts the performance
of the localization dependent protocols and applications, such as routing and storage. Most of the
range free localization algorithms are designed by assuming that the sensor nodes are deployed
in regular areas without any obstacles. This assumption does not reflect the real-world
conditions, especially for outdoor deployment of WSN. In this paper we propose a novel scheme
called Range Free Angle Calculation (RFAC) based Sensor Localization in WSNs, which can
greatly reduce the localization error in the irregular deployment areas. We estimate the average
hop distance by selecting the middle of the transmission path between every two anchor pairs
one by one. Then the estimated hop distance is adjusted by the angle between the anchor pairs to
that selected middle point. The simulation results show that RFAC achieves significant
improvement in localization accuracy in anisotropic WSNs
Description:
This thesis submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electronics and Telecommunication Engineering of East West University, Dhaka, Bangladesh
