Download or read book Distributed Target Tracking and Synchronization in Wireless Sensor Networks written by Jichuan Li and published by . This book was released on 2016 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless sensor networks provide useful information for various applications but pose challenges in scalable information processing and network maintenance. This dissertation focuses on statistical methods for distributed information fusion and sensor synchronization for target tracking in wireless sensor networks. We perform target tracking using particle filtering. For scalability, we extend centralized particle filtering to distributed particle filtering via distributed fusion of local estimates provided by individual sensors. We derive a distributed fusion rule from Bayes' theorem and implement it via average consensus. We approximate each local estimate as a Gaussian mixture and develop a sampling-based approach to the nonlinear fusion of Gaussian mixtures. By using the sampling-based approach in the fusion of Gaussian mixtures, we do not require each Gaussian mixture to have a uniform number of mixture components, and thus give each sensor the flexibility to adaptively learn a Gaussian mixture model with the optimal number of mixture components, based on its local information. Given such flexibility, we develop an adaptive method for Gaussian mixture fitting through a combination of hierarchical clustering and the expectation-maximization algorithm. Using numerical examples, we show that the proposed distributed particle filtering algorithm improves the accuracy and communication efficiency of distributed target tracking, and that the proposed adaptive Gaussian mixture learning method improves the accuracy and computational efficiency of distributed target tracking. We also consider the synchronization problem of a wireless sensor network. When sensors in a network are not synchronized, we model their relative clock offsets as unknown parameters in a state-space model that connects sensor observations to target state transition. We formulate the synchronization problem as a joint state and parameter estimation problem and solve it via the expectation-maximization algorithm to find the maximum likelihood solution for the unknown parameters, without knowledge of the target states. We also study the performance of the expectation-maximization algorithm under the Monte Carlo approximations used by particle filtering in target tracking. Numerical examples show that the proposed synchronization method converges to the ground truth, and that sensor synchronization significantly improves the accuracy of target tracking.

Download or read book Multi target Tracking and Localization in Distributed Wireless Sensor Networks written by Yinfei Fu and published by . This book was released on 2010 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Distributed Time Synchronization from Relative Measurement in Mobile Wireless Sensor Networks written by Chenda Liao and published by . This book was released on 2013 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wireless sensor network (WSN) consists of a set of devices (nodes) with sensing, data processing, and communicating components. They can monitor surrounding physical or environmental information, and collaborate to process such information. They have been used in a variety of applications, such as habitat and environment monitoring, health care, military surveillance, industrial machinery surveillance, home automation and so on. In many of those applications, nodes in sensor networks are mobile. Clock synchronization is critical for the effective use of sensor networks; particularly in applications such as range finding for target tracking and localization, intrusion detection, time correlation of telemetry data, sensor fusion, slot assignment in TDMA, duty cycling protocols, and so on. The problem of clock synchronization indeed has been widely investigated. Most algorithms are designed and tested in static networks, while little attention has been paid to that in mobile networks. In mobile networks, the communication links among networks varies frequently due to changes in inter-node distance and obstacles, which may affect the performance of algorithms designed for static networks. At a given global time t, the local clock time at node u can be approximately written as ... u(t) = ... ut + ... u, where ... u is the skew and ... u is the offset. The global time to which all nodes need to be synchronized can be the local clock time at an arbitrarily chosen "reference" node. The time synchronization problem is effectively a problem of estimating the skews and offsets of every node, since the nodes can infer the global time from their local clock times once they know their own skew and offset estimates.

Download or read book Sensor Technology Concepts Methodologies Tools and Applications written by Management Association, Information Resources and published by IGI Global. This book was released on 2020-02-07 with total page 1618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collecting and processing data is a necessary aspect of living in a technologically advanced society. Whether it’s monitoring events, controlling different variables, or using decision-making applications, it is important to have a system that is both inexpensive and capable of coping with high amounts of data. As the application of these networks becomes more common, it becomes imperative to evaluate their effectiveness as well as other opportunities for possible implementation in the future. Sensor Technology: Concepts, Methodologies, Tools, and Applications is a vital reference source that brings together new ways to process and monitor data and to put it to work in everything from intelligent transportation systems to healthcare to multimedia applications. It also provides inclusive coverage on the processing and applications of wireless communication, sensor networks, and mobile computing. Highlighting a range of topics such as internet of things, signal processing hardware, and wireless sensor technologies, this multi-volume book is ideally designed for research and development engineers, IT specialists, developers, graduate students, academics, and researchers.

Download or read book Distributed Multi target Tracking in a Wireless Sensor Network Using Diffusion Strategies and Adaptive Combiners written by Jaume Anguera-Peris and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless sensor networks (WSN) have been attracting attention over the past years owing to their capability to observe the environment, process the data, and make decisions. These features have gained importance in the context of object detection and localization, surveillance, and environmental monitoring. Specifically, there is an ongoing trend of solving these problems in a distributed manner, i.e., without the use of a central node controlling all the data generated and exchanged over the network. This project presents an algorithm for tracking multiple objects in a distributed manner using a wireless sensor network. In addition to the objects' locations, the strength of the field that they generate is considered as an unknown parameter to be estimated. The proposed algorithm is based on a diffusion cooperation scheme, which has been shown to provide good performance in distributed implementations. Our algorithm is based on explicit, non-linear tracking, and as such is not restricted to a pre-specified quantization grid in space. We allow for imperfect communication links, where information packets can be lost, and rely on an efficient adaptive combination strategy to improve robust- ness to node and link failures. Performance is analyzed in terms of the mean-squared error (MSE) as a function of the signal-to-noise ratio (SNR), in situations with different number of objects moving across the field and different probability of packet loss.

Download or read book RSS AoA based Target Localization and Tracking in Wireless Sensor Networks written by Slavisa Tomic and published by CRC Press. This book was released on 2022-09-01 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The desire for precise knowledge about the location of a moving object at any time instant has motivated a great deal of scientific research recently. This is owing to a steady expansion of the range of enabling devices and technologies, as well as the need for seamless solutions for location-based services. Besides localization accuracy, a common requirement for emerging solutions is that they are cost-abstemious, both in terms of the financial and computational cost. Hence, development of localization strategies from already deployed technologies, e.g., from different terrestrial radio frequency sources is of great practical interest. Amongst other, these include localization strategies based on received signal strength (RSS), time of arrival, angle of arrival (AoA) or a combination of them. RSS-AoA-based Target Localization and Tracking in Wireless Sensor Networks presents recent advances in developing algorithms for target localization and tracking, reflecting the state-of-the-art algorithms and research achievements in target localization and tracking based on hybrid (RSS-AoA) measurements.Technical topics discussed in the book include:Centralized RSS-AoA-based Target LocalizationDistributed RSS-AoA-based Target LocalizationRSS-AoA-based Target Tracking via Maximum A Posteriori EstimatorRSS-AoA-based Target Tracking via Kalman FilterRSS-AoA-based via Sensor NavigationThis book is of interest for personnel in telecommunications and surveillance industries, military, smart systems, as well as academic staff and postgraduate/research students in telecommunications, signal processing, and non-smooth and convex optimization.

Download or read book Distributed Tracking in Wireless Ad Hoc Sensor Networks written by and published by . This book was released on 2003 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Target tracking is an important application for wireless ad hoc sensor networks. Because of the energy and communication constraints imposed by the size of the sensors, the processing has to be distributed over the sensor nodes. This paper discusses issues associated with distributed multiple target tracking for ad hoc sensor networks and examines the applicability of tracking algorithms developed for traditional networks of large sensors. when data association is not an issue, the standard pre- predict/update structure in single target tracking can be used to assign individual tracks to the sensor nodes based on their locations. Track ownership will have to be carefully migrated, using for example information driven sensor tasking, to minimize the need for communication when targets move. when data association is needed in tracking multiple interacting targets, clusters of tracks should be assigned to groups of collaborating nodes. Some recent examples of this type of distributed processing are given. Keywords: Wireless ad hoc sensor networks, multiple target tracking, distributed tracking.

Download or read book DEVELOPMENT OF EFFICIENT TARGET TRACKING SYSTEM USING WIRELESS SENSOR NETWORKS written by Satish Raosaheb Jondhale and published by Infotech Publishers. This book was released on 2022-09-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: INTRODUCTION Wireless sensor network (WSN) based target tracking has become a major research field in recent years. The WSN is composed of a large number of tiny, battery-powered spatially distributed sensor nodes that can communicate and exchange data with each other. This chapter first explains the fundamentals of wireless sensor networks, their characteristics, limitations, and applications. Next, the WSN based Localization and Tracking (L&T) issues and measurement techniques are discussed.

Download or read book Target Tracking Algorithms for Distributed Sensor Networks written by Linda M. Mayer and published by . This book was released on 2004 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technological Breakthroughs in Modern Wireless Sensor Applications written by Hamid Reza Sharif and published by IGI Global. This book was released on 2015-03-31 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collecting and processing data is a necessary aspect of living in a technologically advanced society. Whether it's monitoring events, controlling different variables, or using decision-making applications, it is important to have a system that is both inexpensive and capable of coping with high amounts of data. Technological Breakthroughs in Modern Wireless Sensor Applications brings together new ways to process and monitor data, and to put it to work in everything from intelligent transportation systems to healthcare to multimedia applications. This book is an essential reference source for research and development engineers, graduate students, academics, and researchers interested in intelligent engineering, internetworking, routing, and network planning algorithms.

Download or read book Distributed Filtering Control and Synchronization written by Fei Han and published by Springer Nature. This book was released on 2022-03-24 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book establishes a unified framework for dealing with typical engineering complications arising in modern, complex, large-scale networks such as parameter uncertainties, missing measurement and cyber-attack. Distributed Filtering, Control and Synchronization is a timely reflection on methods designed to handle a series of control and signal-processing issues in modern industrial engineering practice in areas like power grids and environmental monitoring. It exploits the latest techniques to handle the emerging mathematical and computational challenges arising from, among other things, the dynamic topologies of distributed systems and in the context of sensor networks and multi-agent systems. These techniques include recursive linear matrix inequalities, local-performance and stochastic analyses and techniques based on matrix theory. Readers interested in the theory and application of control and signal processing will find much to interest them in the new models and methods presented in this book. Academic researchers can find ideas for developing their own research, graduate and advanced undergraduate students will be made aware of the state of the art, and practicing engineers will find methods for addressing practical difficulties besetting modern networked systems

Download or read book Energy Efficient Multi target Tracking in Heterogeneous Wireless Sensor Networks written by Kaustubh Dhondge and published by . This book was released on 2011 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tracking multiple targets in an energy efficient way is an important challenge in wireless sensor networks (WSNs). While most of the prior work consider tracking multiple targets as execution of single target tracking algorithms multiple times and utilize only single parameters for efficient energy consumption, we identify multiple parameters that can influence the energy efficiency of sensors in the WSN. We observe that there are several impacting parameters that can affect the energy efficiency of the sensors in the WSN which are: the relative location of the sensor with respect to the target's motion, multiple targets tracked by the sensor, and the remaining energy in the sensor. These impacting parameters are used to decide the tracking state of the sensors and further, our observations reveal the implications of combining these parameters and we identify that the optimal energy consumption is governed by their usage in particular network conditions. Based on these observations we proceed to propose our Adaptive Multi-Target Tracking (AMTT) algorithm that can identify the local network conditions for individual sensors in distributed environment without any centralized co-ordination, and uses required combination of impacting parameters to achieve energy efficiency.

Download or read book Distributed Computing in Sensor Systems written by Rajmohan Rajaraman and published by Springer. This book was released on 2010-06-16 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book constitutes the refereed proceedings of the 6th International Conference on Distributed Computing in Sensor Systems, DCOSS 2010, held in Santa Barbara, CA, USA, in June 2010. The 28 revised full papers presented were carefully reviewed and selected from 76 submissions. The research contributions in this proceedings span important aspects of sensor systems, including energy management; communication; coverage and tracking; time synchronization and scheduling; key establishment and authentication; compression; medium access control; code update; and mobility.

Download or read book Localization Algorithms and Strategies for Wireless Sensor Networks Monitoring and Surveillance Techniques for Target Tracking written by Mao, Guoqiang and published by IGI Global. This book was released on 2009-05-31 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless localization techniques are an area that has attracted interest from both industry and academia, with self-localization capability providing a highly desirable characteristic of wireless sensor networks. Localization Algorithms and Strategies for Wireless Sensor Networks encompasses the significant and fast growing area of wireless localization techniques. This book provides comprehensive and up-to-date coverage of topics and fundamental theories underpinning measurement techniques and localization algorithms. A useful compilation for academicians, researchers, and practitioners, this Premier Reference Source contains relevant references and the latest studies emerging out of the wireless sensor network field.

Download or read book Mobile Target Tracking In Wireless Sensor Networks written by Shereen Ismail and published by . This book was released on 2015-06-12 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Target Tracking in Wireless Sensor Networks written by Tarun Anand Malik and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Distributed Sensor Networks written by S. Sitharama Iyengar and published by CRC Press. This book was released on 2016-04-19 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: The best-selling Distributed Sensor Networks became the definitive guide to understanding this far-reaching technology. Preserving the excellence and accessibility of its predecessor, Distributed Sensor Networks, Second Edition once again provides all the fundamentals and applications in one complete, self-contained source. Ideal as a tutorial for