scholarly journals Recent Advances in Wireless Indoor Localization Techniques and System

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Zahid Farid ◽  
Rosdiadee Nordin ◽  
Mahamod Ismail
Keyword(s):  
Indoor Localization ◽  
Location Estimation ◽  
Wireless Localization ◽  
Recent Advances ◽  
Global Positioning ◽  
Real Time Tracking ◽  
New Research ◽  
Application Requirements ◽  
Closed Environment ◽  
Wireless Indoor Localization

The advances in localization based technologies and the increasing importance of ubiquitous computing and context-dependent information have led to a growing business interest in location-based applications and services. Today, most application requirements are locating or real-time tracking of physical belongings inside buildings accurately; thus, the demand for indoor localization services has become a key prerequisite in some markets. Moreover, indoor localization technologies address the inadequacy of global positioning system inside a closed environment, like buildings. Based on this, though, this paper aims to provide the reader with a review of the recent advances in wireless indoor localization techniques and system to deliver a better understanding of state-of-the-art technologies and motivate new research efforts in this promising field. For this purpose, existing wireless localization position system and location estimation schemes are reviewed, as we also compare the related techniques and systems along with a conclusion and future trends.

Wireless Indoor Localization Systems and Techniques: Survey and Comparative Study

2016 ◽  
Vol 3 (2) ◽  
pp. 392 ◽  
Author(s):  
Ahmed Azeez Khudhair ◽  
Saba Qasim Jabbar ◽  
Mohammed Qasim Sulttan ◽  
Desheng Wang
Keyword(s):  
Indoor Localization ◽  
State Of The Art ◽  
Great Influence ◽  
Location Estimation ◽  
Future Trends ◽  
Wireless Localization ◽  
Promising Direction ◽  
New Research ◽  
Wireless Indoor Localization ◽  
Localization Systems

<p>The popularity, great influence and huge importance made wireless indoor localization has a unique touch, as well its wide successful on positioning and tracking systems for both human and assists also contributing to take the lead from outdoor systems in the scope of the recent research works. In this work, we will attempt to provide a survey of the existing indoor positioning solutions and attempt to classify different its techniques and systems. Five typical location predication approaches (triangulation, fingerprinting, proximity, vision analysis and trilateration) are considered here in order to analysis and provide the reader a review of the recent advances in wireless indoor localization techniques and systems to have a good understanding of state of the art technologies and motivate new research efforts in this promising direction. For these reasons, existing wireless localization position systems and location estimation schemes are reviewed. We also made a comparison among the related techniques and systems along with conclusions and future trends to identify some possible areas of enhancements. </p>

Review of indoor localization techniques

2018 ◽  
Vol 7 (2.14) ◽  
pp. 201 ◽  
Author(s):  
Marina Md Din ◽  
Norziana Jamil ◽  
Jacentha Maniam ◽  
Mohamad Afendee Mohamed
Keyword(s):  
Global Positioning System ◽  
Indoor Environment ◽  
Indoor Localization ◽  
Research Effort ◽  
Tracking System ◽  
Positioning System ◽  
Global Positioning ◽  
New Research ◽  
Outdoor Localization ◽  
Tracking Objects

Global Positioning System (GPS) has practically solved the problem of outdoor localization. However, limitation of GPS leads to a challenge for developing a new tracking system for indoor environment. Hence, the demand for accurate indoor localization services has become important. Until now, researches related to IPS are still being conducted with the objective to improve the performance of positioning techniques. This paper provides a comprehensive review of indoor localization techniques and stimulate new research effort in this field. Current existing indoor localization system that used for tracking objects were reviewed along with some further discussion to design a better indoor localization technique.

scholarly journals Efficient AoA-Based Wireless Indoor Localization for Hospital Outpatients Using Mobile Devices

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3698 ◽  
Author(s):  
Yanbin Hou ◽  
Xiaodong Yang ◽  
Qammer Abbasi
Keyword(s):  
Global Positioning System ◽  
Indoor Localization ◽  
Target Position ◽  
Positioning System ◽  
Global Positioning ◽  
Open Issue ◽  
Increasing Demand ◽  
Outdoor Localization ◽  
Wireless Indoor Localization ◽  
Hospital Outpatients

The motivation of this work is to help outpatients find their corresponding departments or clinics, thus, it needs to provide indoor positioning services with a room-level accuracy. Unlike wireless outdoor localization that is dominated by the global positioning system (GPS), wireless indoor localization is still an open issue. Many different schemes are being developed to meet the increasing demand for indoor localization services. In this paper, we investigated the AoA-based wireless indoor localization for outpatients’ wayfinding in a hospital, where Wi-Fi access points (APs) are deployed, in line, on the ceiling. The target position can be determined by a mobile device, like a smartphone, through an efficient geometric calculation with two known APs coordinates and the angles of the incident radios. All possible positions in which the target may appear have been comprehensively investigated, and the corresponding solutions were proven to be the same. Experimental results show that localization error was less than 2.5 m, about 80% of the time, which can satisfy the outpatients’ requirements for wayfinding.

scholarly journals Tag Localization with Asynchronous Inertial-Based Shifting and Trilateration

Sensors ◽  
2019 ◽  
Vol 19 (23) ◽  
pp. 5204
Author(s):  
Alma’aitah ◽  
Eslim ◽  
Hassanein
Keyword(s):  
Low Power ◽  
Indoor Localization ◽  
State Of The Art ◽  
Location Estimation ◽  
Object Localization ◽  
Personal Area Networks ◽  
Matlab Simulation ◽  
Tag Localization ◽  
Simulation Results ◽  
Localization Data

Personal Area Networks (PAN) are key topologies in pervasive Internet of Things (IoT) localization applications. In the numerous object localization techniques, centralization and synchronization between the elements are assumed. In this paper, we leverage crowdsourcing from multiple fixed and mobile elements to enhance object localization. A cooperative crowdsourcing scheme is proposed to localize mobile low power tags using distributed and mobile/fixed readers for GPS assisted environments (i.e., outdoor) and fixed readers for indoors. We propose Inertial-Based Shifting and Trilateration (IBST) technique to provide an accurate reckoning of the absolute location of mobile tags. The novelty in our technique is its capability to estimate tag locations even when the tag is not covered by three readers to perform trilateration. In addition, IBST provides scalability since no processing is required by the low power tags. IBST technique is validated through extensive simulations using MATLAB. Simulation results show that IBST consistently estimates location, while other indoor localization solutions fail to provide such estimates as the state-of-the-art techniques require localization data to be available simultaneously to provide location estimation.

scholarly journals The Complexities of New Venture Legitimacy

2020 ◽  
Vol 1 (2) ◽  
pp. 263178772091388 ◽  
Author(s):  
Greg Fisher
Keyword(s):  
Theoretical Perspective ◽  
New Venture ◽  
Prior Work ◽  
Research Opportunities ◽  
Recent Advances ◽  
Optimal Distinctiveness ◽  
New Research ◽  
Over Time

For entrepreneurs, establishing and maintaining new venture legitimacy is a complex endeavor. Various factors complicate this process, including issues of optimal distinctiveness, audience diversity, market category evolution, and multiple legitimacy thresholds. Moreover, the establishment and maintenance of new venture legitimacy is an intricate process that unfolds over time. In this essay, I review and integrate prior work on new venture legitimacy not only to highlight these complications, but also to consolidate insights, theoretical nuances, and empirical observations to describe what happens when entrepreneurs confront multiple complications at the same time. In so doing, I propose that configurational approaches provide a valuable theoretical perspective to enhance knowledge related to new venture legitimacy. I also highlight exemplar studies that have adopted these perspectives, accounting for multiple new venture legitimacy complications in a single analysis. This provides a basis to understand recent advances in the new venture legitimacy literature, and inspires and opens up new research opportunities for further exploration.

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