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Issues and Methods of Broadband Array Processing

1991
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Release : 1991
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Book Synopsis Issues and Methods of Broadband Array Processing by :

Download or read book Issues and Methods of Broadband Array Processing written by . This book was released on 1991. Available in PDF, EPUB and Kindle. Book excerpt: This document contains observations concerning the analysis of broadband processes as applied to passive spatial array processing. The analysis is intended to be applicable to general acoustic propagation environments. In section 1.0, we use a linear systems model of the propagation environment in our analysis of the spatial/spectral estimation problem. We show how this view also might be used in the moving source problem. We also briefly discuss correlations between Fourier coefficients at different frequencies. In section 2.0, we look at approaches to broadband array processing that take advantage of the frequency extent of the source process in estimating the spatial spectrum.

Broadband Array Processing

2019-05-06 Technology & Engineering
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Release : 2019-05-06
Genre : Technology & Engineering
Kind : eBook
Book Rating : 023/5 ( reviews)

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Book Synopsis Broadband Array Processing by : Shefeng Yan

Download or read book Broadband Array Processing written by Shefeng Yan. This book was released on 2019-05-06. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the background and technology of array signal modeling. It presents the concept and formulation of beamformers and discusses several commonly used array performance measures. It also introduces two traditional types of beamformers: delay-and-sum and optimum beamformers. Chapter 1 includes background information on array processing, while Chapters 2 and 3 discuss the DFT-based frequency-domain implementation of a broadband beamformer and the design of subband beamformers for frequency-domain broadband beamformers. Chapter 4 presents the FIR-based, time-domain implementation of the broadband beamformer, where the FIR beamformer is designed by separately designing the subband beamformers and the corresponding FIR filters. The techniques for optimal design of the FIR beamformer are developed in Chapter 5, and Chapters 6 and 7 focus on the modal beamforming problem for circular arrays for the frequency-domain modal beamformer and the time-domain modal beamformer. Lastly, the final chapters present frequency-domain and time-domain modal beamformers for spherical arrays.

Physics of Multiantenna Systems and Broadband Processing

2008-07-10 Technology & Engineering
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Release : 2008-07-10
Genre : Technology & Engineering
Kind : eBook
Book Rating : 236/5 ( reviews)

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Book Synopsis Physics of Multiantenna Systems and Broadband Processing by : T. K. Sarkar

Download or read book Physics of Multiantenna Systems and Broadband Processing written by T. K. Sarkar. This book was released on 2008-07-10. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of the physics of multiantenna systems Multiple-Input Multiple-Output (MIMO) technology is one of the current hot topics in emerging wireless technologies. This book fills the important need for an authoritative reference on the merits of MIMO systems based on physics and provides a sound theoretical basis for its practical implementation. The book also addresses the important issues related to broadband adaptive processing. Written by three internationally known researchers, Physics of Multiantenna Systems and Broadband Processing: Provides a thorough discussion of the physical and mathematical principles involved in MIMO and adaptive systems Examines the electromagnetic framework of wireless communications systems Uses Maxwell's theory to provide a system-based framework for the abstract concept of channel capacity Performs various numerical simulations to observe how a typical system will behave in practice Provides a mathematical formulation for broadband adaptive processing and direction-of-arrival estimation using real antenna arrays Integrates signal processing and electromagnetics to address the performance of realistic multiantenna systems With Physics of Multiantenna Systems and Broadband Processing, communication systems engineers, graduate students, researchers, and developers will gain a thorough, scientific understanding of this important new technology.

Modal Analysis and Synthesis of Broadband Nearfield Beamforming Arrays

1999 Antenna arrays
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Release : 1999
Genre : Antenna arrays
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Book Synopsis Modal Analysis and Synthesis of Broadband Nearfield Beamforming Arrays by : P. Thushara D. Abhayapala

Download or read book Modal Analysis and Synthesis of Broadband Nearfield Beamforming Arrays written by P. Thushara D. Abhayapala. This book was released on 1999. Available in PDF, EPUB and Kindle. Book excerpt: This thesis considers the design of a beamformer which can enhance desired signals in an environment consisting of broadband nearfield and/or farfield sources. The thesis contains: a formulation of a set of analysis tools which can provide insight into the intrinsic structure of array processing problems; a methodology for nearfield beamforming; theory and design of a general broadband beamformer; and a consideration of a coherent nearfield broadband adaptive beamforming problem. To a lesser extent, the source localization problem and background noise modeling are also treated. A set of analysis tools called modal analysis techniques which can be used to a solve wider class of array signal processing problems, is first formulated. The solution to the classical wave equation is studied in detail and exploited in order to develop these techniques. Three novel methods of designing a beamformer having a desired nearfield broadband beampattern are presented ...

Adaptive Array Systems

2006-02-03 Technology & Engineering
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Release : 2006-02-03
Genre : Technology & Engineering
Kind : eBook
Book Rating : 908/5 ( reviews)

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Book Synopsis Adaptive Array Systems by : Ben Allen

Download or read book Adaptive Array Systems written by Ben Allen. This book was released on 2006-02-03. Available in PDF, EPUB and Kindle. Book excerpt: In the last fifty years, extensive studies have been carried out worldwide in the field of adaptive array systems. However, far from being a mature technology with little research left to tackle, there is seemingly unlimited scope to develop the fundamental characteristics and applications of adaptive antennas for future 3G and 4G mobile communications systems, ultra wideband wireless and satellite and navigation systems, and this informative text shows you how! Provides an accessible resource on adaptive array fundamentals as well as coverage of adaptive algorithms and advanced topics Analyses the performance of various wideband beamforming techniques in wideband array processing Comprehensively covers implementation issues related to such elements as circular arrays, channel modelling and transmit beam forming, highlighting the challenges facing a designer during the development phase Supports practical implementation considerations with detailed case studies on wideband arrays, radar, sonar and biomedical imaging, terrestrial wireless systems and satellite communication systems Includes examples and problems throughout to aid understanding Companion website features Solutions Manual, Matlab Programs and Electronic versions of some figures Adaptive Array Systems is essential reading for senior undergraduate and postgraduate students and researchers in the field of adaptive array systems. It will also have instant appeal to engineers and designers in industry engaged in developing and deploying the technology. This volume will also be invaluable to those working in radar, sonar and bio-medical applications.

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