Cai, J., Liu, W. orcid.org/0000-0003-2968-2888, Zong, R. et al. (1 more author) (2018) An improved expanding and shift scheme for the construction of fourth-order difference co-arrays. Signal Processing, 153. pp. 95-100. ISSN 0165-1684
Abstract
An improved expanding and shift (IEAS) scheme for efficient fourth-order difference co-array construction is proposed. Similar to the previously proposed expanding and shift (EAS) scheme, it consists of two sparse sub-arrays, but one of them is modified and shifted according to a new rule. Examples are provided with the second sub-array being a two-level nested array (IEAS-NA), as such a choice can generate more fourth-order difference lags (FODLs), although with the same number of consecutive lags. Furthermore, the array aperture of IEAS-NA is always greater than the corresponding EAS structure, which helps improving the DOA estimation result. Simulations results are provided to show the improved performance by the proposed new scheme.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Elsevier. This is an author produced version of a paper subsequently published in Signal Processing. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Sparse arrays; Fourth-order difference co-array; Expanding and shift scheme; Cumulant |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 23 Aug 2018 11:04 |
Last Modified: | 06 Jul 2019 00:43 |
Published Version: | https://doi.org/10.1016/j.sigpro.2018.06.025 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.sigpro.2018.06.025 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:134925 |