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2011 9th IEEE International Conference on Pervasive Computing and Communications Workshops, PERCOM Workshops 2011

作者： Tarrio, Paula Cesana, Matteo Tagliasacchi, Marco Redondi, Alessandro Borsani, Luca Casar, Jose R. Data Processing and Simulation Group Universidad Politécnica de Madrid Spain Dipartimento di Elettronica e Informazione Politecnico di Milano Italy

ISBN: (纸本)9781612849379

We propose an optimization-based framework to minimize the energy consumption in a sensor network when using an indoor localization system based on the combination of received signal strength (RSS) and pedestrian dead reckoning (PDR). The objective is to find the RSS localization frequency and the number of RSS measurements used at each localization round that jointly minimize the total consumed energy, while ensuring at the same time a desired accuracy in the localization result. The optimization approach leverages practical models to predict the localization error and the overall energy consumption for combined RSS-PDR localization systems. The performance of the proposed strategy is assessed through simulation, showing energy savings with respect to other approaches while guaranteeing a target accuracy. © 2011 IEEE.

关键词： Energy utilization

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An energy-efficient strategy for combined RSS-PDR indoor localization

An energy-efficient strategy for combined RSS-PDR indoor loc...

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IEEE Annual Conference on Pervasive Computing and Communications Workshops (PerCom)

作者： Paula Tarrío Matteo Cesana Marco Tagliasacchi Alessandro Redondi Luca Borsani José R. Casar Data Processing and Simulation Group Universidad Politécnica de Madrid Madrid Spain Dipartimento di Elettronica e Informazione Politecnico di Milano Milan Italy

关键词： Accuracy Energy consumption Mobile communication Dead reckoning Accelerometers Energy measurement Trajectory

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LAURA - LocAlization and Ubiquitous monitoRing of pAtients for health care support

LAURA - LocAlization and Ubiquitous monitoRing of pAtients f...

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2010 IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications Workshops, PIMRC 2010

作者： Redondi, Alessandro Tagliasacchi, Marco Cesana, Matteo Borsani, Luca Tarrío, Paula Salice, Fabio Dipartimento di Elettronica e Informazione Politecnico di Milano Milano Italy Data Processing and Simulation Group Universidad Politécnica de Madrid Madrid Spain

ISBN: (纸本)9781424491162

This works illustrates the LAURA system, which performs localization, tracking and monitoring of patients hosted at nursing institutes by exploiting a wireless sensor network based on the IEEE 801.15.4 (Zigbee) standard. We focus on the indoor personal localization module, which leverages a method based on received signal strength measurements, together with a particle filter to perform tracking of moving patients. We discuss the implementation and dimensioning of the localization and tracking system using commercial hardware, and we test the LAURA system in real environment, both with static and moving patients, achieving an average localization error lower than 2 m in 80% of the cases. The data sets containing the real measurements of received signal strengths collected during the experiments are made publicly available to enable reproducible research. ©2010 IEEE.

关键词： Wireless sensor networks

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LAURA — LocAlization and Ubiquitous monitoRing of pAtients for health care support

LAURA — LocAlization and Ubiquitous monitoRing of pAtients ...

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IEEE International Symposium on Personal, Indoor and Mobile Radio Communications Workshops (PIMRC Workshops)

作者： Alessandro Redondi Marco Tagliasacchi Matteo Cesana Luca Borsani Paula Tarrío Fabio Salice Dipartimento di Elettronica e lnformazione Politecnico di Milano Milano Italy Data Processing and Simulation Group Universidad Politécnica de Madrid Madrid Spain

关键词： Wireless sensor networks Sensors Medical services Accuracy Atmospheric measurements Particle measurements Monitoring

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A new positioning technique for RSS-Based localization based on a weighted least squares estimator

A new positioning technique for RSS-Based localization based...

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International Symposium on Wireless Communication Systems (ISWCS)

作者： Paula Tarrio Ana M. Bernardos Juan A. Besada Jose R. Casar Data Processing and Simulation Group Ciudad Universitaria Madrid Spain Data Processing and Simulation Group Universidad Politcnica de Madrid Madrid Spain

In this paper we propose the use of a weighted least squares estimator to calculate the position of a mobile node in RSS-based localization systems for ad hoc networks. This technique outperforms the traditional positioning algorithms in terms of localization accuracy and robustness to inaccuracy in the channel model. The performance of the method is shown both through numerical simulations and through some experiments with real data for a wireless sensor network and a WiFi network.

关键词： Least squares approximation Wireless sensor networks Numerical simulation Ad hoc networks Robustness Mobile ad hoc networks Radio frequency Hardware Position measurement Performance analysis

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Tracking filters using kinematic measurements

Tracking filters using kinematic measurements

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FUSION 2007 - 2007 10th International Conference on Information Fusion

作者： Besada, Juan A. Soto, Andres De Miguel, Gonzalo Herrero, Jesús García Simulation and Data Processing Group Universidad Politécnica de Madrid Madrid Spain Universidad Carlos III de Madrid Madrid Spain

ISBN: (纸本)0662478304

This paper describes two tracking filters based on the use of kinematic information (velocity, acceleration), in addition to usual position measurements. This kinematic information allows for more advanced filtering methods, reducing error especially on maneuvers. In the paper we will show two different Kalman filter exploiting this information, and compare them with regards to accuracy, computational load, ... Mode S Enhanced Surveillance measures will be used as an example for the application of those filters.

关键词： Extended Kalman filters

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Tracking filters using kinematic measurements

Tracking filters using kinematic measurements

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International Conference on Information Fusion

作者： Juan A. Besada Gonzalo de Miguel Andres Soto Jesus Garcia Herrero Simulation and Data Processing Group Universidad Politécnica de Madrid Madrid Spain Universidad Carlos III de Madrid Madrid Spain

ISBN: (纸本)9780662478300;0662478304

This paper describes two tracking filters based on the use of kinematic information (velocity, acceleration), in addition to usual position measurements. This kinematic information allows for more advanced filtering methods, reducing error especially on maneuvers. In the paper we will show two different Kalman filter exploiting this information, and compare them with regards to accuracy, computational load ... Mode S Enhanced Surveillance measures will be used as an example for the application of those filters.

关键词： Kinematics Acceleration Position measurement Velocity measurement Information filtering Information filters data processing Accelerometers Predictive models Aircraft

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ASYNCHRONOUS TRANSFER MODE (ATM) OPERATION VIA SATELLITE - ISSUES, CHALLENGES AND RESOLUTIONS

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INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 211-222页

作者： CHITRE, DM GOKHALE, DS HENDERSON, T LUNSFORD, JL MATHEWS, N COMSAT Laboratories 22300 Comsat Drive Clarksburg MD 20871 USA. Received his B.Sc. from the University of Bombay India an M.A. in mathematics from the University of Cambridge U.K. and a Ph.D. in physics from the University of Maryland. He is currently an Associate Executive Director of the Network Technology Division at COMSAT Laboratories. He has been involved in research and development activities in ISDN VSAT networks data communications and network systems and architectures. Prior to his current positions Dr. Chitre was a Principal Scientist in the Network Technology Division at COMSAT Laboratories. Dr. Chitre joined COMSAT Laboratories in 1980. He has made major contributions to the analysis and architecture of data communication ISDN and BISDN via satellite. Dr. Chitre directs and participates in the international and national standards activities in ISDN BISDN and data communication as they apply to satellite communication. He was Chairman of the Working Group on Protocols and Network Timing Function of the CCIR/CCITT Joint Ad Hoc Group on ISDN-Satellite Matters during 1990–1992. Currently he is the Chairman of the Working Group on New Technologies in the ITU Intersector Coordinating Group (ICG) on Satellite Matters. Dr. Chitre was a programme manager during 1990 and 1991 on a contract from INTELSAT on systems studies on satellite communications systems architectures for ISDN and broadband ISDN systems. Currently he is the technical manager of the DoD Contract on ATM via satellite demonstration and the programme manager for the INTELSAT contract on analysis and top-level specification of INTELSAT ISDN subnetworks and SDH compatible transport network. Department manager for ISDN/Data Communications in the Network Technology Division of COMSAT Laboratories. His responsibilities include managing the implementation of next generation telecommunication systems for fixed and mobile satellite systems. Current projects include the development of a high data rate gateway switch that provides for the

Key issues regarding the operation of the broadband integrated services digital network (BISDN) via satellite are presented herein. The specific issues, challenges, and their resolutions are detailed. In particular, the impact of error characteristics and propagation delay on the operation of BISDN via satellite is discussed. Solutions are presented for removing adverse effects and providing high-quality service to users of BISDN via satellite.

关键词： ATM BISDN

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HYBRID SATELLITE AND TERRESTRIAL NETWORKS

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INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS 1994年第3期12卷 313-327页

作者： CHITRE, DM SHYY, DJ EPHREMIDES, A GUPTA, S COMSAT Laboratories 22300 Comsat Drive Clarksburg MD 20871–9475 USA. Received his B.Sc. from the University of Bombay India an M.A. in mathematics from the University of Cambridge U.K. and a Ph.D. in physics from the University of Maryland. He is currently an Associate Executive Director of the Network Technology Division at COMSAT Laboratories. He has been involved in research and development activities in ISDN VSAT networks data communications and network systems and architectures. Prior to his current positions Dr. Chitre was a Principal Scientist in the Network Technology Division at COMSAT Laboratories. Dr. Chitre joined COMSAT Laboratories in 1980. He has made major contributions to the analysis and architecture of data communication ISDN and BISDN via satellite. Dr. Chitre directs and participates in the international and national standards activities in ISDN BISDN and data communication as they apply to satellite communication. He was Chairman of the Working Group on Protocols and Network Timing Function of the CCIR/CCITT Joint Ad Hoc Group on ISDN/Satellite Matters during 1990–1992. Currently he is the Chairman of the Working Group on New Technologies in the ITU Intersector Coordinating Group (ICG) on Satellite Matters. Dr. Chitre was a programme manager during 1990 and 1991 on a contract from INTELSAT on systems studies on satellite communications systems architectures for ISDN and broadband ISDN systems. Currently he is the technical manager of the DoD Contract on ATM via satellite demonstration and the programme manager for the INTELSAT contract on analysis and top-level specification of INTELSAT ISDN subnetworks and SDH compatible transport network. Received the B.S. degree in electrical engineering from national Chiao-Tung University Hsin-Chu Taiwan in 1983 and the M.S. and Ph.D. degrees in electrical engineering from Georgia Institute of Technology Atlanta GA in 1986 and 1990 respectively. From June 1987 to October 1987 he worked for the Department of Neurology Emory Univers

The role of satellite communications in networks that provide new services, such as frame relay and multimedia, is investigated. Both passive and active (on-board switching/processing) satellite systems are considered. Novel techniques are developed for each system to demonstrate, via detailed analysis and simulation, how the communications bandwidth agility of multipoint/broadcast satellite channels, and the on-board switching/processing, makes it feasible to provide these new services via hybrid satellite and terrestrial networks in a resource-efficient manner.

关键词： HYBRID NETWORKS ON-BOARD processing FRAME RELAY

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