Exploiting human mobility trajectory information in indoor device-free passive tracking

2012 ◽  
Author(s):  
Chenren Xu ◽  
Bernhard Firner ◽  
Yanyong Zhang ◽  
Richard Howard ◽  
Jun Li
Keyword(s):  
Human Mobility ◽  
Passive Tracking ◽  
Device Free

iLight: Device-Free Passive Tracking Using Wireless Sensor Networks

2013 ◽  
Vol 13 (10) ◽  
pp. 3785-3792 ◽  
Author(s):  
Xufei Mao ◽  
ShaoJie Tang ◽  
Jiliang Wang ◽  
Xiang Yang Li
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Wireless Sensor ◽  
Passive Tracking ◽  
Device Free

scholarly journals A Passive Tracking System Based on Geometric Constraints in Adaptive Wireless Sensor Networks

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3276 ◽  
Author(s):  
Biao Zhou ◽  
Deockhyeon Ahn ◽  
Jungpyo Lee ◽  
Chao Sun ◽  
Sabbir Ahmed ◽  
...  
Keyword(s):  
Power Consumption ◽  
Tracking System ◽  
Spatial Diversity ◽  
Geometric Constraints ◽  
Wireless Sensor ◽  
Tracking Accuracy ◽  
Passive Tracking ◽  
Save Energy ◽  
Tracking Device ◽  
Device Free

Target tracking technologies in wireless sensor network (WSNs) environments fall into two categories: active and passive schemes. Unlike with the active positioning schemes, in which the targets are required to hold cooperative devices, the research on passive tracking, i.e., tracking device-free targets, has recently showed promise. In the WSN, device-free targets can be tracked by sensing radio frequency tomography (RFT) on the line-of-sight links (LOSLs). In this paper, we propose a passive tracking scheme exploiting both adaptive-networking LOSL webs and geometric constraint methodology for tracking single targets, as well as multiple targets. Regarding fundamental knowledge, we firstly explore the spatial diversity technique for RFT detection in realistic situations. Then, we analyze the power consumption of the WSN and propose an adaptive networking scheme for the purpose of energy conservation. Instead of maintaining a fixed LOSL density, the proposed scheme can adaptively adjust the networking level to save energy while guaranteeing tracking accuracy. The effectiveness of the proposed scheme is evaluated with computer simulations. According to the results, it is observed that the proposed scheme can sufficiently reduce power consumption, while providing qualified tracking performance.

Syrian Crisis and Migration

2015 ◽  
Vol 12 (3) ◽  
pp. 181-192 ◽  
Author(s):  
Pinar Yazgan ◽  
Deniz Eroglu Utku ◽  
Ibrahim Sirkeci
Keyword(s):  
Human Mobility ◽  
Special Issue ◽  
Host Countries ◽  
Syrian Crisis ◽  
Mass Migration ◽  
Large Numbers ◽  
And Migration ◽  
Europe Today ◽  
The Impact ◽  
Near Future

With the growing insurrections in Syria in 2011, an exodus in large numbers have emerged. The turmoil and violence have caused mass migration to destinations both within the region and beyond. The current "refugee crisis" has escalated sharply and its impact is widening from neighbouring countries toward Europe. Today, the Syrian crisis is the major cause for an increase in displacement and the resultant dire humanitarian situation in the region. Since the conflict shows no signs of abating in the near future, there is a constant increase in the number of Syrians fleeing their homes. However, questions on the future impact of the Syrian crisis on the scope and scale of this human mobility are still to be answered. As the impact of the Syrian crisis on host countries increases, so does the demand for the analyses of the needs for development and protection in these countries. In this special issue, we aim to bring together a number of studies examining and discussing human mobility in relation to the Syrian crisis.

Book Review

2014 ◽  
Vol 11 (3) ◽  
pp. 387-390
Author(s):  
Antonina Levatino
Keyword(s):  
Control Strategies ◽  
Human Mobility ◽  
Diverse Range ◽  
Transnational Mobility ◽  
Migration Management ◽  
Nation States ◽  
Migration Control ◽  
Political Economic ◽  
Controversial Nature

Martin Geiger & Antoine Pécoud (eds.), Disciplining the Transnational Mobility of People, Palgrave Macmillan, 2013, 271 pp., (ISBN 978-1-137-26306-3).In the last decades a very diverse range of initiatives have been undertaken in order to intensify and diversify the ways human mobility is managed and restricted. This trend towards a ‘diversification’ of the migration control strategies stems from the increased awareness by the nation-states of the profoundly controversial nature of the migration management enterprise because of its political, economic, social and moral implications.

History Aware Device-free Passive (DfP) Localisation

2011 ◽  
Vol 16 (3-4) ◽  
Author(s):  
Gabriel Deak ◽  
Kevin Curran ◽  
Joan Condell
Keyword(s):  
Device Free
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