Adaptive Interference Mitigation in GPS Receivers PDF Download

Author: Syed Arif
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Author: Renbiao Wu
Publisher: Springer
ISBN: 9811055718
Category : Technology & Engineering
Languages : en
Pages : 289

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Book Description
This book introduces readers to adaptive interference mitigation techniques based on multiple antennas for global navigation satellite systems (GNSS) in the time, domain, spatial and spatial-temporal domains. As the performance of GNSS can easily be impacted by various intentional and unintentional interferences, the book explores in detail various types of interference, including jamming , high dynamic jamming, spoofing, multipath and pulsed interference. It offers a valuable reference work for graduate students and engineers in the field of satellite navigation and signal processing.

Author: Matthew Markel
Publisher:
ISBN: 9780530004341
Category : Technology & Engineering
Languages : en
Pages : 190

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Book Description
Abstract: With its low transmit power and considerable orbit distance from receivers, the Global positioning system (GPS) waveforms are known to be susceptible to jamming. Efforts to date have investigated various receiver designs and adaptive antenna arrays to improve the anti-jam capabilities of GPS position location, but until this work no extension of anti-jam capabilities to attitude determination (determination of the orientation of a body in space) existed. This dissertation provides a comprehensive investigation into the new field of robust, jam-resistant attitude determination using the Global Positioning System. We present a generic adaptive antenna array and receiver design that provide the necessary data for both position location and attitude determination in a jammed environment. Using the data this receiver provides we develop a new maximum likelihood attitude estimator (the MLAE) that provides attitude determination capability even in jammed environments. In order to accomplish this, new ways of viewing the standard array processing and direction finding tenants are presented. This leads to a new interpretation and parameterization of the array response vector (spatial steering vector) and secondary data covariance matrix. The MLAE optimally includes information from all satellites in view, and its performance is shown herein to asymptotically achieve the Cramer-Rao Bound (CRB), i.e. the MLAE asymptotically achieves the performance limit for unbiased estimators. As an approximation to this estimator, a second estimator is developed that, at the expense of performance, may provide increased computational capability. Two versions of this second estimator are presented that combine direction ̄nding with attitude estimation. A method of optimally incorporating data from both GPS frequencies into the estimation is developed. This approach maintains the jammer mitigation capabilities of the previous estimators and allows for a larger array spacing, therefore increasing the accuracy of the attitude estimates. Simulation based performance results of the various estimators are presented for various antenna topologies and interference scenarios. The simulation results indicate that the new algorithms provide signicant improvement over conventional attitude determination methods. In addition, the MLAE is shown to provide better performance than conventional methods of attitude determination even in unjammed environments. Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Interference Mitigation for GPS Based Attitude Determination" by Matthew David Markel, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.

Author: Fabio Dovis
Publisher: Artech House
ISBN: 1608078116
Category : Technology & Engineering
Languages : en
Pages : 217

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Book Description
Reliable positioning and navigation is becoming imperative in more and more applications for public services, consumer products, and safety-critical purposes. Research for finding pervasive and robust positioning methodologies is critical for a growing amount of societal areas while making sure that navigation is trustworthy and the risks and threats of especially satellite navigation are accounted for. This book provides a comprehensive survey of the effect of radio-frequency interference (RFI) on the Global Navigation Satellite Systems (GNSS) as well as of the spoofing threats. Through case studies and practical implementation/applications, this resource presents engineers and scientists with a better understanding of interference and spoofing threats, ultimately helping them to design and implement robust systems.

Author: Rabindra N. Ghose
Publisher: Institute of Electrical & Electronics Engineers(IEEE)
ISBN:
Category : Science
Languages : en
Pages : 296

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Book Description
This book presents means and technologies to reduce interference that affect the reception of radio, television and radar signals. Various alternatives to mitigate interference, created intentionally or inadvertently, and their underlying theories are discussed. Key topics include adaptive interference cancellation, interference rejection by a fixed or adaptive array, adaptive separation of signals, and innovative applications of closed loop cancellation technology in acoustics, direction finding and in instrumentation.

Author: Y. Jade Morton
Publisher: John Wiley & Sons
ISBN: 1119458412
Category : Science
Languages : en
Pages : 1170

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Book Description
Covers the latest developments in PNT technologies, including integrated satellite navigation, sensor systems, and civil applications Featuring sixty-four chapters that are divided into six parts, this two-volume work provides comprehensive coverage of the state-of-the-art in satellite-based position, navigation, and timing (PNT) technologies and civilian applications. It also examines alternative navigation technologies based on other signals-of-opportunity and sensors and offers a comprehensive treatment on integrated PNT systems for consumer and commercial applications. Volume 1 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications contains three parts and focuses on the satellite navigation systems, technologies, and engineering and scientific applications. It starts with a historical perspective of GPS development and other related PNT development. Current global and regional navigation satellite systems (GNSS and RNSS), their inter-operability, signal quality monitoring, satellite orbit and time synchronization, and ground- and satellite-based augmentation systems are examined. Recent progresses in satellite navigation receiver technologies and challenges for operations in multipath-rich urban environment, in handling spoofing and interference, and in ensuring PNT integrity are addressed. A section on satellite navigation for engineering and scientific applications finishes off the volume. Volume 2 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications consists of three parts and addresses PNT using alternative signals and sensors and integrated PNT technologies for consumer and commercial applications. It looks at PNT using various radio signals-of-opportunity, atomic clock, optical, laser, magnetic field, celestial, MEMS and inertial sensors, as well as the concept of navigation from Low-Earth Orbiting (LEO) satellites. GNSS-INS integration, neuroscience of navigation, and animal navigation are also covered. The volume finishes off with a collection of work on contemporary PNT applications such as survey and mobile mapping, precision agriculture, wearable systems, automated driving, train control, commercial unmanned aircraft systems, aviation, and navigation in the unique Arctic environment. In addition, this text: Serves as a complete reference and handbook for professionals and students interested in the broad range of PNT subjects Includes chapters that focus on the latest developments in GNSS and other navigation sensors, techniques, and applications Illustrates interconnecting relationships between various types of technologies in order to assure more protected, tough, and accurate PNT Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications will appeal to all industry professionals, researchers, and academics involved with the science, engineering, and applications of position, navigation, and timing technologies. pnt21book.com

Author: Kai Borre
Publisher: Springer Science & Business Media
ISBN: 0817645403
Category : Technology & Engineering
Languages : en
Pages : 189

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Book Description
This book explore the use of new technologies in the area of satellite navigation receivers. In order to construct a reconfigurable receiver with a wide range of applications, the authors discuss receiver architecture based on software-defined radio techniques. The presentation unfolds in a user-friendly style and goes from the basics to cutting-edge research. The book is aimed at applied mathematicians, electrical engineers, geodesists, and graduate students. It may be used as a textbook in various GPS technology and signal processing courses, or as a self-study reference for anyone working with satellite navigation receivers.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 178

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Book Description
This work focuses on the problem of adaptive receiver design for direct sequence spread-spectrum wireless communications systems with limited data support dictated by the rapidly changing characteristics of the wireless channel. Both linear and non-linear (neutral network) receiver structures are considered, usually equipped with an antenna array (space-time processing).

Author: Philip E. Wigen
Publisher: World Scientific
ISBN: 9789810210052
Category : Science
Languages : en
Pages : 264

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Book Description
In this book, some of the principal investigators of the phenomena have reviewed their successes. The contributions include an overview of the field by H Suhl, followed by a detailed review of the high-power response of magnetic materials. Following that chapter, a number of authors review the phenomena for a variety of magnetic materials and pumping configurations.In the final chapter, evidence of another nonlinear effect is reviewed. Using a pulsed driving field, it is possible to excite a travelling spin wave. The nonlinear contributions will give rise to a ?bunching? effect which compensates for the dispersive effects to produce a shape-preserving traveling wave pulse known as solitons.Ordered magnetic materials have provided a rich source for the investigation of nonlinear phenomena. These investigations have contributed much to our knowledge of the behavior of chaotic systems, as well as to a better understanding of the high-power response of the magnetic materials themselves.

Author: Melvin M. Weiner
Publisher: CRC Press
ISBN: 1420026496
Category : Technology & Engineering
Languages : en
Pages : 1240

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Book Description
In our modern age of remote sensing, wireless communication, and the nearly endless list of other antenna-based applications, complex problems require increasingly sophisticated solutions. Conventional antenna systems are no longer suited to high-noise or low-signal applications such as intrusion detection. Detailing highly effective approaches to non-Gaussian weak signal detection, Adaptive Antennas and Receivers provides an authoritative introduction to state-of-the-art research on the modeling, testing, and application of these technologies. Edited by innovative researcher and eminent expert Melvin M. Weiner, this book is the first to integrate three advanced approaches to non-Gaussian weak signal detection into a single reference: homogeneous partitioning of the surveillance volume, adaptive antennas, and adaptive receivers. Comprising self-contained chapters contributed by renowned experts such as Donald D. Weiner and Ronald Fante, each chapter explores the techniques, theoretical basis, and applications of the approach under discussion. The book considers signal detection in the presence of external noise such as clutter residue, interference, atmospheric noise, jammers, external thermal noise, in vivo surrounding tissue, and camouflaging material, making it ideal for use across a broad spectrum of applications. This authoritative reference supplies more than 750 figures and tables, 1460 equations, and 640 references. Adaptive Antennas and Receivers is an ideal resource for improving performance in surveillance, communication, navigation, artificial intelligence, computer tomography, neuroscience, and intrusion detection systems, to name only a few.