Journal ArticleDOI
On the application of uniform linear array bearing estimation techniques to uniform circular arrays
A.H. Tewfik,W. Hong +1 more
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TLDR
It is shown that the transformed sequence may be processed using a ROOT MUSIC based approach to estimate the elevations and azimuths of the observed sources.Abstract:
The problem of estimating the directions of arrival of narrowband plane waves impinging on a uniform circular array with M identical sensors uniformly distributed around a circle is considered. Specifically, the authors study a transformed data sequence that is equal to a reordering of the inverse discrete Fourier transform sequence corresponding to the outputs of a circular array with M elements uniformly distributed around the array circumference. It is shown that the transformed sequence may be processed using a ROOT MUSIC based approach to estimate the elevations and azimuths of the observed sources. Any root estimated via ROOT MUSIC which is on or close to the unit circle indicates the presence of a source at the elevation under consideration and an azimuth equal to the phase of the root. Experimental results are provided to demonstrate the advantages of processing the transformed data. >read more
Citations
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Journal ArticleDOI
Eigenstructure techniques for 2-D angle estimation with uniform circular arrays
TL;DR: Two eigenstructure-based estimation algorithms that operate in beamspace and employ phase mode excitation-based beamformers have been developed and one of them, UCA-ESPRIT, represents a significant advance in the area of 2D angle estimation.
MonographDOI
Localization Algorithms and Strategies for Wireless Sensor Networks: Monitoring and Surveillance Techniques for Target Tracking
Guoqiang Mao,Baris Fidan +1 more
TL;DR: In this paper, the authors provide a comprehensive and up-to-date coverage of topics and fundamental theories underpinning measurement techniques and localization algorithms in WSNs. And they provide relevant references and the latest studies emerging out of the wireless sensor network field.
Journal ArticleDOI
On the application of the global matched filter to DOA estimation with uniform circular arrays
TL;DR: A method that uses as input the values of a small number of uniformly spaced beams and applies a model-fitting approach taking into account the statistical properties of the beams, which drastically improves upon the conventional beamformer and has a performance comparable with the best high-resolution techniques.
Journal ArticleDOI
Direction finding of coherent signals via spatial smoothing for uniform circular arrays
Mati Wax,J. Sheinvald +1 more
TL;DR: In this paper, a preprocessing technique that in conjunction with spatial smoothing circumvents the difficulty of direction-of-arrival estimation of coherent signals in the case of uniform circular arrays is presented.
Book
Sensor Array Signal Processing
TL;DR: In this paper, the authors focus on the common threads that exist in wavefield analysis and provide a broad overview of sensor array signal processing, including simple beamforming, spatial filtering, and high resolution DOA estimation.
References
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Journal ArticleDOI
Multiple emitter location and signal parameter estimation
TL;DR: In this article, a description of the multiple signal classification (MUSIC) algorithm, which provides asymptotically unbiased estimates of 1) number of incident wavefronts present; 2) directions of arrival (DOA) (or emitter locations); 3) strengths and cross correlations among the incident waveforms; 4) noise/interference strength.
Proceedings ArticleDOI
Improving the resolution performance of eigenstructure-based direction-finding algorithms
TL;DR: Several methods for reducing the SNR required for resolution are presented, including examining the roots of the spectrum polynomial and using the properties of the so-called signal-space eigenvectors to define a rational spectrum function with improved resolution capabilities.
Journal ArticleDOI
Estimating the Angles of Arrival of Multiple Plane Waves
Ramdas Kumaresan,Donald W. Tufts +1 more
TL;DR: In this article, a polynomial D(z) with special properties is constructed from the eigenvectors of C, the zeros of which give estimates of the angle of arrival.
Journal ArticleDOI
Eigenvalue and eigenvector decomposition of the discrete Fourier transform
J. McClellan,T. Parks +1 more
TL;DR: The eigenvalues of a suitably normalized version of the discrete Fourier transform (DFT) are {1, -1,j, -j} and an eigenvector basis is constructed for the DFT.
Journal ArticleDOI
Algorithms for triangular decomposition of block Hankel and Toeplitz matrices with application to factoring positive matrix polynomials
TL;DR: An iterative method is described for factoring p X p-matrix valued positive polynomials R = E7=-m Rix', R_ = R', asA(x)A'(x-1), where A( x) is outer.
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Eigenstructure techniques for 2-D angle estimation with uniform circular arrays
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