An improved expanding and shift scheme for the construction of fourth-order difference co-arrays

Jingjing Cai; Wei Liu; Ru Zong; Bin Wu

doi:10.1016/j.sigpro.2018.06.025

An improved expanding and shift scheme for the construction of fourth-order difference co-arrays

Jingjing Cai, Wei Liu, Ru Zong, Bin Wu

Research output: Journal article publication › Journal article › Academic research › peer-review

9 Citations (Scopus)

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.

Original language	English
Pages (from-to)	95-100
Number of pages	6
Journal	Signal Processing
Volume	153
DOIs	https://doi.org/10.1016/j.sigpro.2018.06.025
Publication status	Published - Dec 2018

Keywords

Cumulant
Expanding and shift scheme
Fourth-order difference co-array
Sparse arrays

ASJC Scopus subject areas

Control and Systems Engineering
Software
Signal Processing
Computer Vision and Pattern Recognition
Electrical and Electronic Engineering

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10.1016/j.sigpro.2018.06.025

Cite this

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title = "An improved expanding and shift scheme for the construction of fourth-order difference co-arrays",

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.",

keywords = "Cumulant, Expanding and shift scheme, Fourth-order difference co-array, Sparse arrays",

author = "Jingjing Cai and Wei Liu and Ru Zong and Bin Wu",

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T1 - An improved expanding and shift scheme for the construction of fourth-order difference co-arrays

AU - Cai, Jingjing

AU - Liu, Wei

AU - Zong, Ru

AU - Wu, Bin

PY - 2018/12

Y1 - 2018/12

N2 - 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.

AB - 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.

KW - Cumulant

KW - Expanding and shift scheme

KW - Fourth-order difference co-array

KW - Sparse arrays

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DO - 10.1016/j.sigpro.2018.06.025

M3 - Journal article

AN - SCOPUS:85050105896

SN - 0165-1684

VL - 153

SP - 95

EP - 100

JO - Signal Processing

JF - Signal Processing

ER -

An improved expanding and shift scheme for the construction of fourth-order difference co-arrays

Abstract

Keywords

ASJC Scopus subject areas

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