Array Processing
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Fundamentals of Spherical Array Processing
This book provides a comprehensive introduction to the theory and practice of spherical microphone arrays. It is written for graduate students, researchers and engineers who work with spherical microphone arrays in a wide range of applications. The first two chapters provide the reader with the necessary mathematical and physical background, including an introduction to the spherical Fourier transform and the formulation of plane-wave sound fields in the spherical harmonic domain. The third chapter covers the theory of spatial sampling, employed when selecting the positions of microphones to sample sound pressure functions in space. Subsequent chapters present various spherical array configurations, including the popular rigid-sphere-based configuration. Beamforming (spatial filtering) in the spherical harmonics domain, including axis-symmetric beamforming, and the performance measures of directivity index and white noise gain are introduced, and a range of optimal beamformers for spherical arrays, including beamformers that achieve maximum directivity and maximum robustness, and the Dolph-Chebyshev beamformer are developed. The final chapter discusses more advanced beamformers, such as MVDR and LCMV, which are tailored to the measured sound field.
PRACTICAL ARRAY PROCESSING
Author: Mark C. Sullivan
language: en
Publisher: McGraw-Hill Education
Release Date: 2008-12-01
Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. A Complete Education on Array Processing-from Theory to Practice Learn all the ins and outs of creating reliable communication systems with Practical Array Processing. This comprehensive guide goes through the entire subject, from a detailed look at the theory of array processing to practical information on how to design and build systems for both commercial and military applications. Written by a recognized expert in the field, Practical Array Processing focuses on the practical issues in any project involving one or more antenna arrays. It provides key background information and hands-on techniques regarding array calibration...antenna array design...signal detection...direction finding...interference cancellation...and more. The book concludes with an explanation of how emitters can be located using angles of arrival or time differences measured at multiple sites. Practical Array Processing includes Hands-on advice for performing full systems engineering analysis on array processing systems Coverage of basic techniques, such as calibration, not included in most texts Easy-to-understand mathematical algorithms, with software and firmware applications In-depth, accessible discussions of array processing theory In this array processing guide • Digital Receiver Techniques • Array Signal Processing Models • Signal Detection • Direction Finding • Beamforming • Emitter Geolocation
Array Processing
The focus of this book is on array processing and beamforming with Kronecker products. It considers a large family of sensor arrays that allow the steering vector to be decomposed as a Kronecker product of two steering vectors of smaller virtual arrays. Instead of directly designing a global beamformer for the original array, once the steering vector has been decomposed, smaller virtual beamformers are designed and separately optimized for each virtual array. This means the matrices that need to be inverted are smaller, which increases the robustness of the beamformers, and reduces the size of the observations. The book explains how to perform beamforming with Kronecker product filters using an unconventional approach. It shows how the Kronecker product formulation can be used to derive fixed, adaptive, and differential beamformers with remarkable flexibility. Furthermore, it demonstrates how fixed and adaptive beamformers can be intelligently combined, optimally exploiting the advantages of both. The problem of spatiotemporal signal enhancement is also addressed, and readers will learn how to perform Kronecker product filtering in this context.