Comparative Analysis of Ranging Protocols for Localization by UWB in Outdoor

Abstract

The rapid evolution of technology in the field of wireless telecommunications and micro components using MEMS technologies (Micro-electromechanical systems) has contributed to the expansion and rapid development of wireless sensor networks (WSN). This rapid development has contributed to the appearance of sensor and actuator networks (WSAN) or even to the Internet of Things with DL-IoT (Device Layer-Internet of Things). This rapid evolution of WSN is due to the enthusiasm generated by this last in industry and research. This new technology is used in several applications, particularly in the outdoor location of communicating nodes. The process of distance calculation between nodes (ranging) is a primordial phase for a precise location of these nodes. This paper presents the result of measurements does with three ranging protocols (TWR, TWR_Skew and SDS-TWR) implemented on De-caWiNo nodes. DecaWiNo nodes use the Ultra-Wide Band (UWB) radio links, proposed by the IEEE 802.15.4 standard amendment of the year 2007, which provides a high-performance ranging by ToF (Time of Flight) [1] [2]. The results are very promising with precision errors of the order of 50 cm over 20 meters.

Performances Analysis of a System of Localization by Angle of Arrival UWB Radio

“…In this paper, we propose a study of the performances of a UWB localization system based on the angle of arrival (AoA) of Decawave. This system can advantageously supplement the systems of ranging by time of flight already studied [2] or by difference time of flight. Indeed, the angle of arrival associated with a distance measurement is used to locate a moving target from a single fixed anchor, while it needs at least 3 fixed anchors if we use only the time of flight.…”