Highly Accurate Ultrasonic Positioning and Tracking Systems
type: CreativeWork
description: Localization is the process of determining the current location of a target(s) within given coordinates using a location system. The localization process has two main phases: firstly, the measurement phase, that establishes a relationship in terms of the distance and/or angle between the targets(s) to be localized and the system infrastructure; and secondly, the positioning phase, that exploits the measured information to calculate the absolute or relative location coordinates of the target(s). So far the most widely used positioning system is the Global Positioning System (GPS). However, in a GPS system, the receiver requires line-of-sight (LOS) reception from different satellites, which is usually difficult to obtain indoors. Therefore, as there is a need for alternate location systems in these GPS-obstructed environments, indoor positioning has drawn considerable attention from both academia and industry. Indoor environments, which are characterized by obstacles such as walls, floors, ceilings, and furniture, provide countless opportunities for a wide range of applications requiring different levels of accuracy. High-accuracy applications, such as gait analysis, usually use optical motion capture systems (MCSs), which are cost-prohibitive for many users, and also require complex arrangements of expensive equipment. In addition, they are responsive to changes in lighting and shadow. Therefore, with the aim of overcoming these limitations, ultrasonic positioning systems (UPSs) have drawn considerable attention. Usually, a narrowband UPS uses either a single tone or narrowband chirp signal in the measurement phase in which accurate estimations of distance, through time-of-flight (TOF) techniques, are fundamental. Generally, cross-correlation, which produces a peak at the time delay between a transmitted and received signal, is considered the optimal TOF estimation technique. Since their accuracy depends on the width of the correlation peak, which is inversely propor…
abstract: Localization is the process of determining the current location of a target(s) within given coordinates using a location system. The localization process has two main phases: firstly, the measurement phase, that establishes a relationship in terms of the distance and/or angle between the targets(s) to be localized and the system infrastructure; and secondly, the positioning phase, that exploits the measured information to calculate the absolute or relative location coordinates of the target(s). So far the most widely used positioning system is the Global Positioning System (GPS). However, in a GPS system, the receiver requires line-of-sight (LOS) reception from different satellites, which is usually difficult to obtain indoors. Therefore, as there is a need for alternate location systems in these GPS-obstructed environments, indoor positioning has drawn considerable attention from both academia and industry. Indoor environments, which are characterized by obstacles such as walls, floors, ceilings, and furniture, provide countless opportunities for a wide range of applications requiring different levels of accuracy. High-accuracy applications, such as gait analysis, usually use optical motion capture systems (MCSs), which are cost-prohibitive for many users, and also require complex arrangements of expensive equipment. In addition, they are responsive to changes in lighting and shadow. Therefore, with the aim of overcoming these limitations, ultrasonic positioning systems (UPSs) have drawn considerable attention. Usually, a narrowband UPS uses either a single tone or narrowband chirp signal in the measurement phase in which accurate estimations of distance, through time-of-flight (TOF) techniques, are fundamental. Generally, cross-correlation, which produces a peak at the time delay between a transmitted and received signal, is considered the optimal TOF estimation technique. Since their accuracy depends on the width of the correlation peak, which is inversely propor…
author: Khyam, Mohammad
language: EN
keywords: Ultrasonic positioning, Ultrasonic tracking
license: https://purl.org/coar/access_right/c_abf2
license: https://creativecommons.org/licenses/by-nc-nd/3.0/au/
date published: 2015
date modified: 2026-07-24T05:33:55Z
provider: University of New South Wales
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: UNSW, Sydney

PropertyValue
property ID: Handle
value: http://hdl.handle.net/1959.4/54259

PropertyValue
property ID: DOI
value: 10.26190/unsworks/2706