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Root-music based direction-of-arrival estimation methods for arbitrary non-uniform arrays
2008
Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing
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Two computationally efficient high-resolution methods are proposed for direction-of-arrival (DOA) estimation in arbitrary nonuniform sensor arrays. ...
The proposed techniques are shown to offer substantially improved performance-tocomplexity tradeoffs as compared to the existing root-MUSIC-type methods applicable to non-uniform arrays. ...
arbitrary geometry. zero-padding to 2J −1 (J > M) values where 2J − 1 is the required number of points of the null-spectrum. 0 for all values of m that satisfy M −1 < |m| ≤ J −1. ...
doi:10.1109/icassp.2008.4518110
dblp:conf/icassp/RubsamenG08
fatcat:66datgsutjazdc6bofxqjfp57q
Reduced-Complexity Direction of Arrival Estimation Using Real-Valued Computation with Arbitrary Array Configurations
2018
International Journal of Antennas and Propagation
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decomposition (EVD) and spectral search are implemented with efficient real-valued computations, leading to about 75% complexity reduction as compared to the standard MUSIC. ...
Furthermore, the proposed technique has no dependence on array configurations and is hence suitable for arbitrary array geometries, which shows a significant implementation advantage over most state-of-the-art ...
with arbitrary arrays. ...
doi:10.1155/2018/3284619
fatcat:vjzbszluqzas5dmmx5x5e6noyq
Two-Dimensional Direction-of-Arrivals Estimation Based on One-Dimensional Search Using Rank Deficiency Principle
2015
International Journal of Antennas and Propagation
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A novel efficient method for two-dimensional (2D) direction-of-arrivals (DOAs) estimation is proposed to reduce the computational complexity of conventional 2D multiple signal classification (2D-MUSIC) ...
algorithm with uniform rectangular arrays (URAs). ...
National Natural Science Foundation of China (61501142), Shandong Provincial Natural Science Foundation (ZR2014FQ003), China Postdoctoral Science Foundation (2015M571414), and the Fundamental Research Funds for ...
doi:10.1155/2015/127621
fatcat:oq4wqedt6nfxfc5mqae2wypbju
Single Snapshot Super-Resolution DOA Estimation for Arbitrary Array Geometries
[article]
2018
arXiv
pre-print
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We address the problem of search-free direction of arrival (DOA) estimation for sensor arrays of arbitrary geometry under the challenging conditions of a single snapshot and coherent sources. ...
We extend a method of searchfree super-resolution beamforming, originally applicable only for uniform linear arrays, to arrays of arbitrary geometry. ...
On the other hand, at a specific angle θ 1 , [a m (θ 1 )] ∈ C M is the steering vector for direction θ 1 . ...
arXiv:1810.00017v1
fatcat:3d3kyx4hkzdwplhxju6zae5c6q
On Calibration and Direction Finding with Uniform Circular Arrays
2019
International Journal of Antennas and Propagation
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Antenna array calibration methods and narrowband direction finding (DF) techniques will be outlined and compared for a uniform circular array. ...
Also, two novel DF techniques will be proposed, based on the Capon beamformer, but with reduced computational effort and higher resolution for bearing estimation. ...
Theoretical array models typically assume omnidirectional sensors and an ideal array geometry, which cannot be assured for real arrays. ...
doi:10.1155/2019/1523469
fatcat:hj76mom4mbglhlqckpe4szmf5y
Two-Dimensional DOA Estimation Using Arbitrary Arrays for Massive MIMO Systems
2017
International Journal of Antennas and Propagation
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To be exact, the 2D Fourier domain line search (FDLS) MUSIC algorithm is studied to mutually estimate elevation and azimuth angle, and arbitrary array geometry is utilized to represent massive MIMO systems ...
The performance is examined and contrasted with the 2D MUSIC algorithm for different types of antenna configuration. ...
The major steps of the proposed algorithm for 2D DOA estimation in arbitrary geometry for the MIMO system are as follows: (1) Obtain the RDBS matrix T from the SVD of (10) (for k = 4P); then, apply the ...
doi:10.1155/2017/6794920
fatcat:jwtx4467qzdyhiccoriy2x7ut4
DOA estimation for noninteger linear antenna arrays with more uncorrelated sources than sensors
2000
IEEE Transactions on Signal Processing
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We investigate direction-of-arrival (DOA) estimation involving nonuniform linear arrays, where the sensor positions may be noninteger values expressed in half-wavelength units, with some number of uncorrelated ...
This process is followed by the application of an algorithm that searches for a specific number of plane wavefronts, yielding the minimum fitting error for the specified covariance lags in the neighborhood ...
Using a standard "trick," we present the arbitrary real vector in the form for some (i.e. positive-valued vectors). ...
doi:10.1109/78.827529
fatcat:ftdmak3alrczflep2d4o4iks5u
Closed-form underwater acoustic direction-finding with arbitrarily spaced vector hydrophones at unknown locations
1997
IEEE Journal of Oceanic Engineering
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Index Terms-Acoustic position measurement, acoustic signal processing, array signal processing, direction of arrival estimation, parameter estimation, sonar arrays, sonar signal processing, underwater ...
ESPRIT is realized herein by exploiting the nonspatial interrelations among each vector hydrophone's constituent hydrophones, such that ESPRIT's eigenvalues become independent of array geometry. ...
locations in a 3-D region with completely arbitrary geometry. ...
doi:10.1109/48.650831
fatcat:f5zxzlylq5brlj7edpfl6pp2jy
Cost function for sound source localization with arbitrary microphone arrays
2017
2017 Hands-free Speech Communications and Microphone Arrays (HSCMA)
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The resulting algorithm is fast and suitable for realtime implementations. It works well with different microphone array geometries with both omnidirectional and unidirectional microphones. ...
In addition, the direction of arrival can be used for meetings diarization, pointing a camera, sound source separation. ...
There are two major approaches for the sound source direction of arrival (DOA) estimation with microphone arrays: delay estimation and steered response power (SRP). ...
doi:10.1109/hscma.2017.7895565
dblp:conf/hscma/TashevLGL17
fatcat:wxzvt2f27nbtbgjzel5nlupdra
Resolving manifold ambiguities in direction-of-arrival estimation for nonuniform linear antenna arrays
1999
IEEE Transactions on Signal Processing
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This paper addresses the problem of ambiguities in direction-of-arrival (DOA) estimation for nonuniform (sparse) linear arrays. ...
that "the use of arrays with linearly independent steering vectors is crucial to applications that involve estimation of the directions-of-arrival (DOA's) of multiple signals" [9] . ...
It should be clear that the solution of the DFP does not depend on the array geometry, and could be easily generalized for arbitrary nonlinear arrays (circular, 2-D, etc.), provided that identifiability ...
doi:10.1109/78.790646
fatcat:uiw5dne2rveujcwn3zq6msf5x4
Closed-form underwater acoustic direction-finding with arbitrarily spaced vector hydrophones at unknown locations
1997
IEEE Journal of Oceanic Engineering
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Index Terms-Array signal processing, direction of arrival estimation, eigenvalues/eigenfunctions, ESPRIT, random arrays, sonar arrays, sonar tracking, underwater acoustic arrays. Kainam T. ...
ESPRIT is realized herein by exploiting the nonspatial inter-relations among each vector hydrophone's constituent hydrophones, such that ESPRIT's eigenvalues become independent of array geometry. ...
locations in a 3-D region with completely arbitrary geometry. ...
doi:10.1109/48.611148
fatcat:hvqme7akubcu3ix6rvfjdfu6wi
GLRT-Based Threshold Detection-Estimation Performance Improvement and Application to Uniform Circular Antenna Arrays
2007
IEEE Transactions on Signal Processing
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The problem of estimating the number of independent Gaussian sources and their parameters impinging upon an antenna array is addressed for scenarios that are problematic for standard techniques, namely ...
Detection-estimation performance in both uniform circular and linear antenna arrays is shown to be significantly improved compared with conventional techniques but limited by the performance-breakdown ...
In fact, the method developed is applicable to arbitrary antenna array geometries, but results for UCAs are presented in Section IV. ...
doi:10.1109/tsp.2006.882078
fatcat:rbzj3ecwnzchhfmndmqskvz3te
Root-MUSIC-based azimuth-elevation angle-of-arrival estimation with uniformly spaced but arbitrarily oriented velocity hydrophones
1999
IEEE Transactions on Signal Processing
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A proposed pairing procedure matches each source's x x x-axis direction cosine estimate with its corresponding y y y-axis direction cosine estimate. ...
Index Terms-Array signal processing, blind estimation, estimation of direction of arrival, sonar arrays, sonar tracking, underwater acoustic arrays. ...
maximum likelihood (ML) approach because MUSIC is computationally more efficient and offers estimation performance comparable with that of ML methods in low SNR or few snapshot situations. ...
doi:10.1109/78.806070
fatcat:ppjg6jf4hzfanbjbe7thvccnkq
DoA Estimation Via Manifold Separation for Arbitrary Array Structures
2007
IEEE Transactions on Signal Processing
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MST is a method for modeling the steering vector of antenna arrays of practical interest with arbitrary 2-D or 3-D geometry. ...
This allows fast direction-of-arrival (DoA) algorithms designed for linear arrays to be used on arrays with arbitrary configuration. ...
The proposed preprocessing techniques allow fast direction-of-arrival (DoA) algorithms designed for linear arrays to be used on real-world arrays with arbitrary configuration. ...
doi:10.1109/tsp.2007.896115
fatcat:dcpy6g7h45gk3fajrnu7uvdble
EM-Esprit Algorithm for Direction Finding with Nonuniform Arrays
2007
2007 IEEE/SP 14th Workshop on Statistical Signal Processing
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This paper deals with the problem of the Direction Of Arrival (DOA) estimation with nonuniform linear arrays. ...
One of this method novelties lies in its capacity of dealing with any nonuniform array geometry. ...
Three types of initialization are compared: the beamforming, the real values [−5 • , 10 • ] and arbitrary values taken at [0 • , 40 • ]. ...
doi:10.1109/ssp.2007.4301299
fatcat:it3i52nfxbc2jb2kzmw7sbbgqa
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