Accurate indoor positioning with ultra-wide band sensors

Ultra Wide Band Positioning Systems for Advanced Construction Site Management

Ultra Wide Band (uwb) Based Precise Positioning System for Robotics

The advent of the Global Positioning System (GPS) provided reliable and accurate position information worldwide for outdoor environment. However, many applications are emerging where position information is required and the environment or complexity considerations prohibit the use of GPS. As a result, areas as diverse as robotics, sensor networks, and ubiquitous computing have seen an increase ...

Indoor Ultra-wide Band Network Adjustment Using Maximum Likelihood Estimation

This study is the part of our ongoing research on using ultra-wide band (UWB) technology for navigation at the Ohio State University. Our tests have indicated that the UWB two-way time-of-flight ranges under indoor circumstances follow a Gaussian mixture distribution that may be caused by the incompleteness of the functional model. In this case, to adjust the UWB network from the observed range...

An Ultra Wide Band Antenna Design for Indoor Geolocation Applications

In this paper, we present a miniaturized, Ultra Wide Band (UWB) elliptical slot antenna with a circular stub as a tuning element printed on a FR4 substrate with a dielectric constant of 4.4 operating in the frequency range from 2 GHz up to 14 GHz over which the return loss below -10 dB. The antenna is intended to operate in a system designed to assist the visually impaired in indoor navigation ...

An Overview of Modeling of Ultra Wide Band Indoor Channels

In this paper an overview of the reported parameters of the Ultra Wide Band (UWB) indoor wireless channel is presented. First, an introduction to UWB technology as well as UWB wireless channels is provided. Then, impulse response model for the wireless indoor channel is introduced. The available UWB channel measurements results in indoor environments are consulted and accordingly, the major UWB...