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Partly-filled nonuniform linear arrays for DOA estimation in multipath signals
Date
2007-04-20
Author
Tuncer, Temel Engin
Friedlander, Benjamin
Metadata
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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
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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.
