Time-Difference-of-Arrival (TDoA) Based Wireless Indoor Localization Using an Effective Hybrid Time Synchronization

Abstract

Wireless indoor localization is a major challenging issue for state-of-the-art technologies and applications which require precise and robust location information. Many restrictions affect the performance of the wireless indoor localization, for instance, intricate building architecture, decorated appliances inside the building, and inaccessibility and unavailability of using GPS in indoor environments. Nowadays, time based indoor localization is considered as a better and popular research trend for wireless networks. The major disadvantage of time based localization techniques is difficulty to attain precise time synchronization. In this paper, Time- Difference-of-Arrival (TDoA) based wireless indoor localization technique is proposed which is based on an effective hybrid time synchronization approach. Python programming language is used for simulation evaluations to highlight the improved localization performance. By using the robust and effective hybrid time synchronization, localization accuracy of the proposed system is considerably high.