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Author : S. Sharma
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (11 download)
Download or read book The Application of Superresolution Techniques in Radio Direction Finding written by S. Sharma and published by . This book was released on 1993 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. J. D. Gething
Publisher : IET
ISBN 13 : 9780863412387
Total Pages : 392 pages
Book Rating : 4.4/5 (123 download)
Download or read book Radio Direction Finding and Superresolution written by P. J. D. Gething and published by IET. This book was released on 1991 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enlarged and revised second edition. Modern direction finders, capable of measuring elevation angles as well as azimuth angles on the components of multi-ray wavefields, have become powerful tools for research in ionospheric physics and HF radio propagation. The complexity of the problem of resolving closely-spaced rays requires the combined use of wide aperture antenna arrays, multichannel receiving systems and sophisticated digital processing techniques.
Author :
Publisher :
ISBN 13 :
Total Pages : 121 pages
Book Rating : 4.:/5 (227 download)
Download or read book An Evaluation of Superresolution Methods for Tactical Radio Direction Finding written by and published by . This book was released on 1991 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report evaluates superresolution direction finding methods for land tactical narrowband very high frequency/ultrahigh frequency purposes. The DF methods are described and evaluated in depth using a common theoretical framework beginning with classical methods and ending with modern day eigenanalysis based methods. Based on this analysis, superresolution methods can be described in terms of a five step procedure where each step has a unique purpose the estimation process. Different methods vary according to the operations performed at each step. This is useful in analyzing and comparing the theoretical performance of various DF methods under the same conditions. The results from simulations are also included to support the theoretical evaluations.
Download or read book Radio Direction-Finding and the resolution of multicomponent wave-fields written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Comparison of Superresolution Algorithms with Different Array Geometries for Radio Direction Finding written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis is to investigate and evaluate the effectiveness of modern estimation methods with different array geometries as they apply to the problem of bearing estimation. The algorithms were selected from those that apply to multidimensional direction finding, and include MUSIC, PHD, minimum norm, and Capon's beam-former. These four techniques based on their high resolution capability, and their ability to deal with three-dimensional non-uniform arrays and to estimate both azimuth and elevation angle of arrival (AQA). Computer simulations were run linear arrays, circular array, and combinations of the two. The test conditions included: (1) two closely spaced emitters, and (2) various levels of additive white Gaussian noise.
Author : Ku-Ting Lin
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (455 download)
Download or read book Comparison of Superresolution Algorithms with Different Array Geometries for Radio Direction Finding written by Ku-Ting Lin and published by . This book was released on 1998 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis is to investigate and evaluate the effectiveness of modern estimation methods with different array geometries as they apply to the problem of bearing estimation. The algorithms were selected from those that apply to multidimensional direction finding, and include MUSIC, PHD, minimum norm, and Capon's beam-former. These four techniques based on their high resolution capability, and their ability to deal with three-dimensional non-uniform arrays and to estimate both azimuth and elevation angle of arrival (AQA). Computer simulations were run linear arrays, circular array, and combinations of the two. The test conditions included: (1) two closely spaced emitters, and (2) various levels of additive white Gaussian noise.
Author : Ku-Ting Lin
Publisher :
ISBN 13 : 9781423557647
Total Pages : 106 pages
Book Rating : 4.5/5 (576 download)
Download or read book Comparison of Superresolution Algorithms with Different Array Geometriesfor Radio Direction Finding written by Ku-Ting Lin and published by . This book was released on 1998-09-01 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis is to investigate and evaluate the effectiveness of modern estimation methods with different array geometries as they apply to the problem of bearing estimation. The algorithms were selected from those that apply to multidimensional direction finding, and include MUSIC, PHD, minimum norm, and Capon's beam-former. These four techniques based on their high resolution capability, and their ability to deal with three-dimensional non-uniform arrays and to estimate both azimuth and elevation angle of arrival (AQA). Computer simulations were run linear arrays, circular array, and combinations of the two. The test conditions included: (1) two closely spaced emitters, and (2) various levels of additive white Gaussian noise.
Author : Mykhailo Ilchenko
Publisher : Springer Nature
ISBN 13 : 3031163680
Total Pages : 602 pages
Book Rating : 4.0/5 (311 download)
Download or read book Progress in Advanced Information and Communication Technology and Systems written by Mykhailo Ilchenko and published by Springer Nature. This book was released on 2022-11-17 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the most important research areas in information and communication technologies, namely the research in fields of modern information technologies that deal with various aspects of the analysis and solution of practically important issues of information systems in general, and contains discussion about the progression from big data to smart data, development of cloud-based architecture, practical implementation of Internet of Things (IoT), the fundamentals of information and analytical activities; studying of modern communication technologies contains original works dealing with many aspects of construction, using research and forecasting of technological and services characteristics of communication systems, as well as research of modern radio electronics technologies that contains actual papers, which show some effective technological solutions that can be used for the implementation of novel radio electronics systems. These results can be used in the implementation of novel systems and to promote information exchange in e-societies. This book offers a valuable resource for scientists, lecturers, specialists working at enterprises, and graduate and undergraduate students who engage with problems in information and communication technologies.
Author :
Publisher :
ISBN 13 :
Total Pages : 692 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Institution of Electrical Engineers
Publisher :
ISBN 13 :
Total Pages : 428 pages
Book Rating : 4.:/5 (318 download)
Download or read book Eighth International Conference on HF Radio Systems and Techniques, 10-13 July 2000, Venue University of Surrey, Guildford, UK written by Institution of Electrical Engineers and published by . This book was released on 2000 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the Eighth International Conference on HF Radio Systems and Techniques. There are 72 papers altogether.
Author : Simon Haykin
Publisher : Springer Science & Business Media
ISBN 13 : 3642773478
Total Pages : 326 pages
Book Rating : 4.6/5 (427 download)
Download or read book Radar Array Processing written by Simon Haykin and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radar Array Processing presents modern techniques and methods for processingradar signals received by an array of antenna elements. With the recent rapid growth of the technology of hardware for digital signal processing, itis now possible to apply this to radar signals and thus to enlist the full power of sophisticated computational algorithms. Topics covered in detail here include: super-resolution methods of array signal processing as applied to radar, adaptive beam forming for radar, and radar imaging. This book will be of interest to researchers and studentsin the radar community and also in related fields such as sonar, seismology, acoustics and radio astronomy.
Author : Magnus Finne
Publisher : DIANE Publishing
ISBN 13 : 0788135538
Total Pages : 64 pages
Book Rating : 4.7/5 (881 download)
Download or read book Methods for Direction-Finding of Direct-Sequence Spread-Spectrum Signals written by Magnus Finne and published by DIANE Publishing. This book was released on 1996 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of spread-spectrum signals has increased dramatically in military radio communications. This report locates methods for direction-finding direct-sequence spread-spectrum (DS/SS) signals; digital methods are of special interest. A literature survey was conducted to see if there are any known methods. Investigated if a DS/SS detection method using a square-law detector can be extended to direction-finding. By use of computer simulations, show the performance of the methods found. Benefits and problems are also discussed.
Author : Lway Faisal Abdulrazak
Publisher : Springer
ISBN 13 : 3319705881
Total Pages : 166 pages
Book Rating : 4.3/5 (197 download)
Download or read book Coexistence of IMT-Advanced Systems for Spectrum Sharing with FSS Receivers in C-Band and Extended C-Band written by Lway Faisal Abdulrazak and published by Springer. This book was released on 2017-12-06 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides information regarding spectrum sharing between wireless systems, motivated by emerging new technologies. Readers will benefit from information about how to conduct research on the interference mitigation between IMT-Advanced and FSS. The author presents a deterministic analysis for interference to noise ratio (I/N), adjacent channel interference ratio (ACIR), field strength, and path loss propagation, in order to determine the separation distances in the co-channel interference (CCI) and adjacent channel Interference (ACI) scenarios. An analytical model is discussed, for the shielding mitigation technique based on the deterministic analysis of the propagation model. The shielding technique has been developed based on test bed measurements for evaluating the attenuation of the proposed materials. MatlabTM and Transfinite Visualyse ProTM have been used as simulation tools for the verification of the obtained results, whereas the IMT-Advanced parameters have been represented by Worldwide Interoperability for Microwave Access (WiMAX) 802.16e.
Author : Kaveh Pahlavan
Publisher : John Wiley & Sons
ISBN 13 : 0471738638
Total Pages : 742 pages
Book Rating : 4.4/5 (717 download)
Download or read book Wireless Information Networks written by Kaveh Pahlavan and published by John Wiley & Sons. This book was released on 2005-11-07 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt: Towards location aware mobile ad hoc sensors A Systems Engineering Approach to Wireless Information Networks The Second Edition of this internationally respected textbook brings readers fully up to date with the myriad of developments in wireless communications. When first published in 1995, wireless communications was synonymous with cellular telephones. Now wireless information networks are the most important technology in all branches of telecommunications. Readers can learn about the latest applications in such areas as ad hoc sensor networks, home networking, and wireless positioning. Wireless Information Networks takes a systems engineering approach: technical topics are presented in the context of how they fit into the ongoing development of new systems and services, as well as the recent developments in national and international spectrum allocations and standards. The authors have organized the myriad of current and emerging wireless technologies into logical categories: * Introduction to Wireless Networks presents an up-to-the-moment discussion of the evolution of the cellular industry from analog cellular technology to 2G, 3G, and 4G, as well as the emergence of WLAN and WPAN as broadband ad hoc networks * Characteristics of Radio Propagation includes new coverage of channel modeling for space-time, MIMO, and UWB communications and wireless geolocation networks * Modem Design offers new descriptions of space-time coding, MIMO antenna systems, UWB communications, and multi-user detection and interference cancellation techniques used in CDMA networks * Network Access and System Aspects incorporates new chapters on UWB systems and RF geolocations, with a thorough revision of wireless access techniques and wireless systems and standards Exercises that focus on real-world problems are provided at the end of each chapter. The mix of assignments, which includes computer projects and questionnaires in addition to traditional problem sets, helps readers focus on key issues and develop the skills they need to solve actual engineering problems. Extensive references are provided for those readers who would like to explore particular topics in greater depth. With its emphasis on knowledge-building to solve problems, this is an excellent graduate-level textbook. Like the previous edition, this latest edition will also be a standard reference for the telecommunications industry.
Author : Jay R. Sklar
Publisher : MIT Press
ISBN 13 : 0262347687
Total Pages : 369 pages
Book Rating : 4.2/5 (623 download)
Download or read book Modern HF Signal Detection and Direction Finding written by Jay R. Sklar and published by MIT Press. This book was released on 2018-09-25 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed descriptions of detection, direction-finding, and signal-estimation methods, using consistent formalisms and notation, emphasizing HF antenna array sensing applications. Adaptive antenna array technology encompasses many powerful interference suppression approaches that exploit spatial differences among signals reaching a radio receiver system. Today, worldwide propagation phenomenology occurring in the High Frequency (HF) radio regime has made such interference common. In this book, Jay Sklar, a longtime researcher at MIT Lincoln Laboratory, presents detailed descriptions of detection, direction-finding, and signal-estimation methods applicable at HF, using consistent formalisms and notation. Modern electronic system technology has made many of these techniques affordable and practical; the goal of the book is to offer practicing engineers a comprehensive and self-contained reference that will encourage more widespread application of these approaches. The book is based on the author's thirty years of managing MIT Lincoln Laboratory work on the application of adaptive antenna array technologies to the sensing of HF communication signals. After an overview of HF propagation phenomenology, communication signal formats, and HF receiver architectural approaches, Sklar describes the HF propagation environment in more detail; introduces important modulation approaches and signaling protocols used at HF; discusses HF receiver system architectural features; and addresses signal processor architecture and its implementation. He then presents the technical foundation for the book: the vector model for a signal received at an adaptive array antenna. He follows this with discussions of actual signal processing techniques for detection and direction finding, including specific direction-finding algorithms; geolocation techniques; and signal estimation.
Author : I. Andronov
Publisher : IET
ISBN 13 : 0863414478
Total Pages : 263 pages
Book Rating : 4.8/5 (634 download)
Download or read book Asymptotic and Hybrid Methods in Electromagnetics written by I. Andronov and published by IET. This book was released on 2005-07-18 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asymptotic methods provide considerable physical insight and understanding of diffraction mechanisms and are very useful in the design of electromagnetic devices such as radar targets and antennas. However, difficulties can arise when trying to solve problems using multipole and asymoptotic methods together, such as in radar crosssection objects. This new book offers a solution to this problem by combining these approaches into hybrid methods, therefore creating high demand for both understanding and learning how to apply asymptotic and hybrid methods to solve diffraction problems.
Author : S. Drabowitch
Publisher : Springer Science & Business Media
ISBN 13 : 0387262318
Total Pages : 702 pages
Book Rating : 4.3/5 (872 download)
Download or read book Modern Antennas written by S. Drabowitch and published by Springer Science & Business Media. This book was released on 2010-04-08 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete and rigorous treatment of design principles for modern antennas, including chapters on signal theory and signal processing antennas, radar and polarimetry. Contains significant new material on antennas for mobile communications to supply a complete picture of antennas for modern radiocommunications applications.
