Download or read book Adaptive Localization and Tracking of Objects in a Sensor Network written by Adrian López Rodríguez and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: [ANGLÈS] Wireless Sensor Networks (WSNs) are used to monitor physical or environmental conditions, and to pass their data through the network to a central location. These networks have applications in diverse areas including environmental, health monitoring, home automation or military. The devices that form the network have limited resources, such as power and computational capacity.\par This thesis focus on the localization and tracking problem, presenting a method that can be used with objects that emit a signature signal.\par The localization step is performed using a mixed-norm minimization to retrieve a sparse vector with a discrete set of locations, whereas the tracking step is performed updating the amplitudes and locations explicitly by using a gradient descent algorithm. None of these methods rely on having the full set of measurements. Therefore, the network architecture is developed having in mind that the methods only use a subset of the measurements, with the objective of reducing the energy consumption of the system, which is one of the main challenges in designing a WSN.\par Focusing on the localization step, clustering algorithms are studied in order to improve the accuracy of the estimates. Concerning the tracking step, feedback of the estimated positions from the FC to the network is added. The feedback is used to instruct the sensors to increase/decrease their sampling rate, and, when mobile, to adjust their position. The goal in doing so is to improve both the energy efficiency of the system and the accuracy of the tracking. Additionally, a method to monitor the error in the tracking parameters is introduced. This method is used to re-start the localization step when necessary.
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 Entity Localization and Tracking in GPS less Environnments written by Richard Fuller and published by Springer Science & Business Media. This book was released on 2009-09-11 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the second International Workshop on Mobile Entity Localization and Tracking in GPS-less Environnments, MELT, held in Orlando, Florida, USA, in September 2009 in conjunction with the 11th International Conference on Ubiquitous Computing (Ubicomp 2009). MELT is a forum for the state-of-the-art technologies in mobile localization and tracking and novel applications of location-based services. The research contributions in these proceedings cover significant aspects of localization and tracking of mobile devices that include techniques suitable for smart phones and mobile sensor networks in both outdoor and indoor environments using diverse sensors and radio signals. Novel theoretical methods, algorithmic design and analysis, application development, and experimental studies are presented in 14 papers that were reviewed carefully by the program committee. In addition, three invited papers, with topics on location determination using RF systems, Cramer-Rao-Bound analysis for indoor localization and approaches targeting mobile sensor networks, are also included in the proceedings.
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 Localization and Object tracking in an Ultrawideband Sensor Network written by Cheng Chang and published by . This book was released on 2004 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mission Oriented Sensor Networks and Systems Art and Science written by Habib M. Ammari and published by Springer Nature. This book was released on 2019-09-18 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses topics in mission-oriented sensor networks and systems research and practice, enabling readers to understand the major technical and application challenges of these networks, with respect to their architectures, protocols, algorithms, and application design. It also presents novel theoretical and practical ideas, which have led to the development of solid foundations for the design, analysis, and implementation of energy-efficient, reliable, and secure mission-oriented sensor network applications. Covering various topics, including sensor node architecture, sensor deployment, mobile coverage, mission assignment, detection, localization, tracking, data dissemination, data fusion, topology control, geometric routing, location privacy, secure communication, and cryptograph, it is a valuable resource for computer scientists, researchers, and practitioners in academia and industry.
Download or read book Device Free Object Tracking Using Passive Tags written by Jinsong Han and published by Springer. This book was released on 2014-11-21 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SpringerBrief examines the use of cheap commercial passive RFID tags to achieve accurate device-free object-tracking. It presents a sensitive detector, named Twins, which uses a pair of adjacent passive tags to detect uncooperative targets (such as intruders). Twins leverages a newly observed phenomenon called critical state that is caused by interference among passive tags. The author expands on the previous object tracking methods, which are mostly device-based, and reveals a new interference model and their extensive experiments for validation. A prototype implementation of the Twins-based intrusion detection scheme with commercial off-the-shelf reader and tags is also covered in this SpringerBrief. Device-Free Object Tracking Using Passive Tags is designed for researchers and professionals interested in smart sensing, localization, RFID and Internet of Things applications. The content is also useful for advanced-level students studying electrical engineering and computer science.
Download or read book UAV Sensors for Environmental Monitoring written by Felipe Gonzalez Toro and published by MDPI. This book was released on 2018-03-05 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "UAV Sensors for Environmental Monitoring" that was published in Sensors
Download or read book Simultaneous Localization and Tracking in Wireless Ad hoc Sensor Networks written by Christopher Jorgen Taylor and published by . This book was released on 2005 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we present LaSLAT, a sensor network algorithm that uses range measurements between sensors and a moving target to simultaneously localize the sensors, calibrate sensing hardware, and recover the target's trajectory. LaSLAT is based on a Bayesian filter that updates a probability distribution over the parameters of interest as measurements arrive. The algorithm is distributable and requires a fixed amount of storage space with respect to the number of measurements it has incorporated. LaSLAT is easy to adapt to new types of hardware and new physical environments due to its use of intuitive probability distributions: one adaptation demonstrated in this thesis uses a mixture measurement model to detect and compensate for bad acoustic range measurements due to echoes. We present results from a centralized implementation of LaSLAT using a network of Cricket sensors. In both 2D and 3D networks, LaSLAT is able to localize sensors to within several centimeters of their ground truth positions while recovering a range measurement bias for each sensor and the complete trajectory of the mobile.
Download or read book Sensor Networks written by César Benavente-Peces and published by Springer Nature. This book was released on 2019-09-10 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 6th International Conference, SENSORNETS 2017, Porto, Portugal, held in February 2017, and the 7th International Conference, SENSORNETS 2018, Funchal, Madeira, Portugal, held in January 2018. The 18 full papers presented were carefully reviewed and selected from 67 submissions. The papers cover the following topics: sensor networks, including hardware of sensor networks, wireless communication protocols, sensor networks software and architectures, wireless information networks, data manipulation, signal processing, localization and object tracking through sensor networks, obstacles, applications and uses.
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 Video Sensor Networks written by Bir Bhanu and published by Springer Science & Business Media. This book was released on 2011-01-04 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large-scale video networks are of increasing importance in a wide range of applications. However, the development of automated techniques for aggregating and interpreting information from multiple video streams in real-life scenarios is a challenging area of research. Collecting the work of leading researchers from a broad range of disciplines, this timely text/reference offers an in-depth survey of the state of the art in distributed camera networks. The book addresses a broad spectrum of critical issues in this highly interdisciplinary field: current challenges and future directions; video processing and video understanding; simulation, graphics, cognition and video networks; wireless video sensor networks, communications and control; embedded cameras and real-time video analysis; applications of distributed video networks; and educational opportunities and curriculum-development. Topics and features: presents an overview of research in areas of motion analysis, invariants, multiple cameras for detection, object tracking and recognition, and activities in video networks; provides real-world applications of distributed video networks, including force protection, wide area activities, port security, and recognition in night-time environments; describes the challenges in graphics and simulation, covering virtual vision, network security, human activities, cognitive architecture, and displays; examines issues of multimedia networks, registration, control of cameras (in simulations and real networks), localization and bounds on tracking; discusses system aspects of video networks, with chapters on providing testbed environments, data collection on activities, new integrated sensors for airborne sensors, face recognition, and building sentient spaces; investigates educational opportunities and curriculum development from the perspective of computer science and electrical engineering. This unique text will be of great interest to researchers and graduate students of computer vision and pattern recognition, computer graphics and simulation, image processing and embedded systems, and communications, networks and controls. The large number of example applications will also appeal to application engineers.
Download or read book Detection and Tracking Over Networks written by Sergi Masip Cosin and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowing the location of the nodes in wireless sensor networks is essential for their operation. However, such localization in large scale networks is challenging. Additionally, the traditional localization techniques based on GPS and satellite navigation provide low accuracy and are useless indoors. Therefore, an alternative technology has to be proposed. This motivates this project's study of using wireless camera networks to track moving objects. In particular, first standard localization techniques used in a WSN are studied. Then it is explained how to detect and track objects using video cameras. Finally, an analysis is made on how video images and sensor measurements are combined in order to obtain better results. The good performance of these fusion techniques is illustrated with examples. It is demonstrated in a simulation that the localization techniques can perfectly track a moving object if there is no measurement noise. These results also demonstrate the trade- off between localization accuracy and measurement noise. Moreover, it is affirmed that increasing the number of anchor nodes, reduces the error in target localization. Finally, the detection and tracking of objects using a camera based tracking system are simulated. The general conclusion of this work is that even though video tracking systems are promising technology, for them to be a realistic option more research has to be done in signal processing, communications, computer vision and mathematical analysis.
Download or read book Networked Filtering and Fusion in Wireless Sensor Networks written by Magdi S. Mahmoud and published by CRC Press. This book was released on 2014-12-20 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: By exploiting the synergies among available data, information fusion can reduce data traffic, filter noisy measurements, and make predictions and inferences about a monitored entity. Networked Filtering and Fusion in Wireless Sensor Networks introduces the subject of multi-sensor fusion as the method of choice for implementing distributed systems. The book examines the state of the art in information fusion. It presents the known methods, algorithms, architectures, and models of information fusion and discusses their applicability in the context of wireless sensor networks (WSNs). Paying particular attention to the wide range of topics that have been covered in recent literature, the text presents the results of a number of typical case studies. Complete with research supported elements and comprehensive references, this teaching-oriented volume uses standard scientific terminology, conventions, and notations throughout. It applies recently developed convex optimization theory and highly efficient algorithms in estimation fusion to open up discussion and provide researchers with an ideal starting point for further research on distributed estimation and fusion for WSNs. The book supplies a cohesive overview of the key results of theory and applications of information-fusion-related problems in networked systems in a unified framework. Providing advanced mathematical treatment of fundamental problems with information fusion, it will help you broaden your understanding of prospective applications and how to address such problems in practice. After reading the book, you will gain the understanding required to model parts of dynamic systems and use those models to develop distributed fusion control algorithms that are based on feedback control theory.
Download or read book Imaging Sensors and Technologies written by Gonzalo Pajares Martinsanz and published by MDPI. This book was released on 2018-07-06 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Imaging: Sensors and Technologies" that was published in Sensors
Download or read book Smart Trends in Systems Security and Sustainability written by Xin-She Yang and published by Springer. This book was released on 2017-12-30 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume deals with sustainability transitions which are transformations of major socio-technical systems of provision and use in areas such as energy, water, mobility, and food, towards more sustainable ways of production and consumption. The book provides insights of World Conference on Smart Trends in Systems, Security and Sustainability (WS4 2017) which is divided into different sections such as Smart IT Infrastructure for Sustainable Society; Smart Management prospective for Sustainable Society; Smart Secure Systems for Next Generation Technologies; Smart Trends for Computational Graphics and Image Modelling; and Smart Trends for Biomedical and Health Informatics. The book volume contains 31 high-quality papers presented at WS4 2017.
Download or read book Experimental Study of Localization in Sensor Networks and Design of Adaptive Localization written by Ahmed Abdol-Monem Ahmed and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We design an experimental framework to evaluate localization methods for sensor networks. We use this framework to evaluate three existing localization approaches: Ad-hoc Positioning System (APS), Multidimensional Scaling (MDS), and Semidefinite Programming (SDP). Using this evaluation, we study the effect of several factors that affect the performance of localization. Through experimental study of the three selected localization methods, we present one possible combination of APS and MDS into one relative localization method that we refer to as: Simple Hybrid Absolute Relative Positioning (SHARP). Our proposed method performs better than both APS and MDS if both the localization accuracy and the energy consumption are considered. We further investigate different approaches to design of localization methods that are adaptive to network properties. This adaptation can be at the network level or at the partition level. In both cases, off-line training is used to decide which localization methods perform the best under what network properties. In the first case, dynamic discovery of network properties is assumed. Then, the training results are used to decide which algorithm to use. In the second case, training is done on network partitions (maps). The network is divided into local maps, where each map is supposed to have different set of network properties. Every map runs its own localization method. Finally, local maps are merged to form a global map, and anchors are then used to estimate the absolute positions.
