Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Partly-filled nonuniform linear arrays for DOA estimation in multipath signals
Date
2007-04-20
Author
Tuncer, Temel Engin
Friedlander, Benjamin
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
233
views
0
downloads
Cite This
Partly-filled nonuniform linear arrays (PFNLA) are presented and DOA estimation problem for multipath signals is investigated. A new approach is proposed for DOA estimation in nonuniform linear arrays (NLA) based on array interpolation. A Wiener formulation is used to improve the condition number of the mapping matrix as well as the performance for noisy observations. An initial DOA estimate is obtained by using the uniform part of the PFNLA. This initial estimate is used in array interpolation and a new covariance matrix is found which improves the DOA estimation significantly. Noniterative and iterative algorithms are developed for the DOA estimation in multipath. Proposed approach overcomes some of the limitations of the conventional array interpolation. It is shown that the DOA performance is close to the CRB and the method is robust for a variety of source and DOA scenarios.
Subject Keywords
Direction of arrival estimation
,
Nonuniformly spaced arrays
,
Music
,
Array signal processing
,
Multipath
URI
https://hdl.handle.net/11511/41893
DOI
https://doi.org/10.1109/icassp.2007.366420
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Wideband doa estimation for nonuniform linear arrays with wiener array interpolation
Yasar, T. Kaya; Tuncer, Temel Engin (2008-07-23)
Coherent wideband DOA estimation for non-uniform linear arrays (NLA) is considered. Array interpolation is used for two mappings. In the first mapping, NLA is mapped to a uniform linear array with the same array aperture. In the second mapping covariance matrices for each frequency bin are mapped to a single one at the center frequency for coherent DOA estimation. A Wiener formulation is used for array interpolation where both signal and noise powers are estimated with maximum likelihood method. Different a...
UNIFORM AND NONUNIFORM V-SHAPED ISOTROPIC PLANAR ARRAYS
Filik, Tansu; Tuncer, Temel Engin (2008-07-23)
In this study, isotropic V-shaped uniform and nonuniform arrays are considered. An isotropic array has the same value for the Cramer-Rao bound (CRB) for all direction of arrival (DOA) angles. The conditions for isotropic V-shaped arrays are presented and closed form expressions for V-shaped uniform and nonuniform arrays are found. These expressions return the V-angle for the array. Therefore, given the number of sensors and sensor displacements, isotropic performance V-angle can be found easily. V-shaped ar...
2-D DOA estimation in case of unknown mutual coupling for multipath signals
Filik, Tansu; Tuncer, Temel Engin (2016-01-01)
In this paper, two dimensional (2-D) direction-of-arrival (DOA) estimation problem in case of unknown mutual coupling and multipath signals is investigated for antenna arrays. A new technique is proposed which uses a special array structure consisting of parallel uniform linear array (PULA). PULA structure is complemented with auxiliary antennas in order to have a structured mutual coupling matrix (MCM). MCM has a symmetric banded Toeplitz structure which allows the application of the ESPRIT algorithm for 2...
Direction of arrival estimation for nonuniform linear arrays by using array interpolation
Tuncer, Temel Engin; Friedlander, B. (2007-07-03)
[1] A new approach is proposed for DOA estimation in nonuniform linear arrays (NLA) based on array interpolation. A Wiener formulation is presented to improve the condition number of the mapping matrix as well as the performance for noisy observations. Noniterative and iterative methods for DOA estimation are proposed. These methods use an initial DOA which is then significantly improved by the subsequent processing. Partially augmentable nonredundant arrays (PANA) and partly filled NLA (PFNLA) are consider...
Uniform and Non-Uniform V-shaped Arrays for 2-D DOA Estimation
Filik, Tansu; Tuncer, Temel Engin; Yasar, T. Kaya (2008-04-22)
In this study, a new method for optimum design of uniform and non-uniform V-shaped arrays is presented for azimuth and elevation angle estimation. The proposed design method finds an optimum angle between the linear sub-arrays of the V-array by using the Cramer-Rao Bound (CRB) where statistical coupling effect between azimuth and elevation angle estimation is considered This method can be used to obtain directional and isotropic angle performances for uniform and non-uniform V-arrays. For non-uniform isotro...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
T. E. Tuncer and B. Friedlander, “Partly-filled nonuniform linear arrays for DOA estimation in multipath signals,” 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41893.
