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Scalable Information-Driven Sensor Querying and Routing for Ad Hoc Heterogeneous Sensor Networks

Maurice Chu, Horst Haussecker, Feng Zhao
2002 The international journal of high performance computing applications  
The key idea is to introduce an information utility measure to select which sensors to query and to dynamically guide data routing.  ...  This allows us to maximize information gain while minimizing detection latency and bandwidth consumption for tasks such as localization and tracking.  ...  Agency or the US Government.  ... 
doi:10.1177/10943420020160030901 fatcat:6rpmcncor5a7lmkiaedfzof7zm

Dynamic mutual calibration and view planning for cooperative mobile robots with panoramic virtual stereo vision

Zhigang Zhu, Deepak R Karuppiah, Edward M Riseman, Allen R Hanson
2004 Computer Vision and Image Understanding  
However, the error of localizing a target is still pro-62 portional to the square of the targetÕs distance from the cameras with fixed baseline 63 distances; in their simulation, it increases 7-fold when  ...  Gen-51 erally there are two problems in such a system-(1) the correspondence problem 52 among multiple targets, and (2) the measurement accuracy of target locations.  ...  In the case of colinearity of sensors and the target, triangulation is invalid. 296 However we can use the size-ratio method.  ... 
doi:10.1016/j.cviu.2004.02.001 fatcat:viuulu4bjrhl5l76hkukxrcr24

Tactile Object Recognition and Localization Using Spatially-Varying Appearance [chapter]

Zachary Pezzementi, Gregory D. Hager
2016 Springer Tracts in Advanced Robotics  
The method's strong performance is demonstrated experimentally both in simulation and using physical sensors.  ...  In this work, we present a new method for doing object recognition using tactile force sensors that makes use of recent work on "tactile appearance" to describe objects by the spatially-varying appearance  ...  The position of the tactile sensor was set to q = p + dn, a small distance d away in the direction of the local surface normal, n.  ... 
doi:10.1007/978-3-319-29363-9_12 fatcat:7xcxqffnrbaixip4ev3flrukxq

Bayesian sensor model for indoor localization in Ubiquitous Sensor Network

Abdelmoula Bekkali, Mitsuji Matsumoto
2008 2008 First ITU-T Kaleidoscope Academic Conference - Innovations in NGN: Future Network and Services  
The location information is one of the most important and frequently-used contexts in ubiquitous networking.  ...  Instead, the location estimation is regarded as machine learning problem in which the task is to model how the location estimation error is distributed indoors based on a sample of measurements collected  ...  landmarks, to the redundancy of the location measurement used, which is based on multilateration with the landmarks (colinearity of the landmarks with the target), and to the RSS measurement error is  ... 
doi:10.1109/kingn.2008.4542278 fatcat:gvgzyytysjcjjowiaxwso4qmgi

Recovering saturated images for high dynamic kernel-phase analysis. Application to the determination of dynamical masses for the system Gl 494AB

R. Laugier, F. Martinache, A. Ceau, D. Mary, M. N'Diaye, J.-L. Beuzit
2019 Astronomy and Astrophysics  
Using this new data point along with other resolved observations and radial velocity measurements, we produce improved constraints on the orbital parameters of the system, and consequently the masses of  ...  We show that in cases where the image is dominated by the light of a point source, we can use an interpolation to reconstruct the otherwise lost pixels with an accuracy sufficient to enable the extraction  ...  This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute  ... 
doi:10.1051/0004-6361/201834387 fatcat:why6bq62kzbwrhsrehq7fasrey

Positioning in Wireless Sensor Networks Using Array Processing

A. Manikas, Y. I. Kamil, P. Karaminas
2008 IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference  
In this paper, a novel positioning approach for wireless sensor networks (WSNs) is proposed.  ...  The approach locates a given target node by using a number of surrounding anchor nodes as an array of large aperture with known geometry.  ...  For the last few years, localization in wireless sensor networks (WSNs) has rapidly gained increasing popularity.  ... 
doi:10.1109/glocom.2008.ecp.821 dblp:conf/globecom/ManikasKK08 fatcat:nqzekjoazjanrltxxw2kwlkfji

Interferometry in Wireless Sensor Networks [chapter]

Sandor Szilvasi, Peter Volgyesi, Janos Sallai, Akos Ledeczi, Miklos Maroti
2012 Interferometry - Research and Applications in Science and Technology  
This RI ranging method measures the phase of the radio signals to obtain information on the relative distance between the sensor nodes.  ...  Radio interferometric positioning The basic idea behind interferometric localization is to use the phase information of a radio signal to measure distance.  ... 
doi:10.5772/36492 fatcat:jjfwyatxnjepbouub2auaggl4e

TPSS: A Time-based Positioning Scheme for Sensor Networks with Short Range Beacons [chapter]

Fang Liu, Xiuzhen Cheng, Dong Hua, Dechang Chen
2008 Signals and Communication Technology  
In our simulation study, we only consider the inaccuracy of the TDoA measurement at the sensors (t i 's), since ∆t i 's play the same role.  ...  A sensor node measures its distance to each beacon in terms of hop counts, then estimates its position based on the average distance per hop which is computed by base stations. Ref.  ... 
doi:10.1007/978-0-387-49592-7_7 fatcat:ghh4jdte5bcadpvcf3dbzrixaa

TPSS: A Time-Based Positioning Scheme for Sensor Networks with Short Range Beacons [chapter]

Fang Liu, Xiuzhen Cheng, Dong Hua, Dechang Chen
2005 Lecture Notes in Computer Science  
In our simulation study, we only consider the inaccuracy of the TDoA measurement at the sensors (t i 's), since ∆t i 's play the same role.  ...  A sensor node measures its distance to each beacon in terms of hop counts, then estimates its position based on the average distance per hop which is computed by base stations. Ref.  ... 
doi:10.1007/11534310_6 fatcat:zx42qzhmdrdmjaexq5zbr7vc2a

Time-Synchronization Free Localization in Large Scale Underwater Acoustic Sensor Networks

Wei Cheng, Andrew Thaeler, Xiuzhen Cheng, Fang Liu, Xicheng Lu, Zexin Lu
2009 2009 29th IEEE International Conference on Distributed Computing Systems Workshops  
We consider variations in the speed of sound and analyze the performance of the proposed scheme in terms of the number of localized nodes, location errors, and the number of reference nodes.  ...  This scheme relies on time-differences of arrival (TDoA) measured locally at a sensor to detect range differences from the sensor to three anchors that can mutually hear each other.  ...  Acknowledgment The research was supported by the US National Science Foundation under grants CNS-0347674, CNS-0721669, and CNS-0831852.  ... 
doi:10.1109/icdcsw.2009.79 dblp:conf/icdcsw/ChengTCLLL09 fatcat:yc73sk4qlrhaths7bneipiynoa

Apparent Position of Visual Targets during Real and Simulated Saccadic Eye Movements

M. Concetta Morrone, John Ross, David C. Burr
1997 Journal of Neuroscience  
The size and even the sign of errors depend strongly on position in the visual field, the complete pattern of errors suggesting a compression of visual space around the initial fixation point and the target  ...  to create offsets for colinear bars separated in time by 75 msec.  ...  The actual timing of the stimulus onset, relative to eye movements, was calibrated directly by measuring it at the monitor with the eye movement sensor.  ... 
doi:10.1523/jneurosci.17-20-07941.1997 pmid:9315912 fatcat:eyx2dnya5fdvrmd4huhdlow34u

Mine Machine Radar Sensor for Emergency Escape

Hargrave, Munday, Kennedy, Kock
2020 Resources  
Adapting such sensors for use in an underground coal mining environment was the focus of this research effort, and involved trialing a suitable sensor in dust and smoke chambers as well as trials in an  ...  Since any sensor would have to operate in an explosive atmosphere, a related research work developed a flameproof dielectric enclosure to allow the use of the radar in the mine environment.  ...  Acknowledgments: The authors wish to thank the Australian coal industry, in particular ACARP, for supporting this research.  ... 
doi:10.3390/resources9020016 fatcat:bzryei6spbbcpkkqcdbzfqigm4

Geomatics and Forensic: Progress and Challenges [chapter]

Pablo Rodríguez-Gonzálvez, Ángel Luis Muñoz-Nieto, Sandra Zancajo-Blázquez, Diego González-Aguilera
2016 Forensic Analysis - From Death to Justice  
Currently, the combination of sensors and technologies allows the integration of spatial data and the generation of virtual infographic products (orthoimages, solid images, point clouds, cross-sections  ...  The integration of data from different sensors whose final purpose is 3D accurate modelling is also described.  ...  Acknowledgements The authors would like to thank the CISE (Ciencias de la Seguridad) of the University of Salamanca for the financial support given, as well as to the National Police Corps of Spain for  ... 
doi:10.5772/63155 fatcat:j4p26zx7nngtxe3nkvqfssd4za

Unequal Weighting for Improved Positioning in GPS-Less Sensor Networks

Thomas Haenselmann, Marcel Busse, Thomas King, Wolfgang Effelsberg
2007 EURASIP Journal on Advances in Signal Processing  
Positioning can be done by means of triangulation in which triples of position-aware nodes estimate a neighbor's position with the help of distances.  ...  A major advantage of the approach is that the precision of existing positioning systems can be improved without technical modifications.  ...  INTRODUCTION The value of measured data in a sensor network increases significantly if each node's position is known, for example, to assign the measurement to a position on a map.  ... 
doi:10.1155/2008/281635 fatcat:unracgucunff3kqu7ip2w7ziby

Transcriptome Wide Identification and Validation of Calcium Sensor Gene Family in the Developing Spikes of Finger Millet Genotypes for Elucidating Its Role in Grain Calcium Accumulation

Uma M. Singh, Muktesh Chandra, Shailesh C. Shankhdhar, Anil Kumar, Manoj Prasad
2014 PLoS ONE  
The calcium sensor gene family identified and characterized in this study will facilitate in understanding the molecular basis of calcium accumulation and development of calcium biofortified crops.  ...  Out of 109,218 contigs, 78 contigs in case of GP-1 (Low Ca genotype) and out of 120,130 contigs 76 contigs in case of GP-45 (High Ca genotype), were identified as calcium sensor genes.  ...  Prediction of subcellular localization was done by using Target P1.1 server (  ... 
doi:10.1371/journal.pone.0103963 pmid:25157851 pmcid:PMC4144799 fatcat:swgo4lkfyvdrjbegheu2lfcf74
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