Ultra wideband indoor navigation system

Abstract

Typical indoor environments contain multiple walls and obstacles consisting of different materials. As a result, current narrowband radio frequency (RF) indoor navigation systems cannot satisfy the challenging demands for most indoor applications. The RF ultra wideband (UWB) system is a promising technology for indoor localisation owing to its high bandwidth that permits mitigation of the multipath identification problem. This work proposes a novel UWB navigation system that permits accurate mobile robot (MR) navigation in indoor environments. The navigation system is composed of two sub-systems: the localisation system and the MR control system. The main contributions of this work are focused on estimation algorithm for localisation, digital implementation of transmitter and receiver and integration of both sub-systems that enable autonomous robot navigation. For sub-systems performance evaluation, statics and dynamics experiments were carried out which demonstrated that the proposed system reached an accuracy that outperforms traditional sensors technologies used in robot navigation, such as odometer and sonar.

The virtual small cells based on UE positioning: a network densification solution

“…Also, for LOS static UEs, [50] In the next section, we compare our results to GPS approach used in our first group localization method in Section 5.1 whose error localization will be considered and is around 10 m in LOS outdoor environment [51]; as GPS remains the notorious outdoor localization technique. Meanwhile, we propose a solution for the step after ToA estimations, several works focus on resolving the most common problems of ToA signals [52][53][54][55]. Please notice that we can achieve even better results with our algorithm while combining these two visions, i.e., use efficient ToA as input to our algorithm.…”

Ultrawideband Communications—An Idea Whose Time has Still Yet to Come? [Wireless Corner]

“…There are also some research activities focused on realizing futuristic personal and body area networks for various applications such as medical body area networks [49], bespoke learning environments [50], etc. A further key trend in UWB is the focus on implementing radar sensor network technologies such as indoor localization and personnel tracking [51,52], intruder movement [53], through-wall and under-rubble radar [54,55], and mobile robot navigation [56], to name a few. UWB excels in these applications due to its large bandwidth and high accuracy at low signal-to-noise ratios.…”

Design and performance evaluation of wiimote-based two-dimensional indoor localization systems for indoor mobile robot control

“…However, due to restrictions in positioning resolution, system dynamic responses, and the need to compromise with complicated indoor environments, a flawless positioning technique has not yet been achieved. Various solutions currently exist for indoor positioning, navigation, and communications such as inertial navigation system (INS) [5,6], ultrasonic localization [7], laser range finders [8], and radio signals such as ultrawide band signal (UWB) [9][10][11][12] and received signal strength indication (RSSI) [13,14] methods have been developed. These techniques each have their own strengths and weaknesses.…”