Fast DOA estimation using co-prime array

A new method is proposed to estimate the direction-of-arrivals (DOAs) of multiple narrow-band signals using a co-prime array (CPA). The CPA is divided into two uniform linear arrays (ULAs) and two polynomials are derived by utilising the unitary transformation technique on the covariance matrices of...

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Vydané v:Electronics letters Ročník 54; číslo 7; s. 409 - 410
Hlavní autori: Yan, Feng-Gang, Liu, Shuai, Wang, Jun, Jin, Ming, Shen, Yi
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: The Institution of Engineering and Technology 05.04.2018
Predmet:
Antennas and propagation
array signal processing
covariance matrices
co‐prime array
CPA
difference polynomial
direction‐of‐arrival estimation
direction‐of‐arrivals
DOAs
fast DOA estimation
first‐order derivatives
low‐complexity algorithm
narrow‐band signals
polynomials
reduced complexity
ULAs
uniform linear arrays
unitary transformation technique
covariance matrices
difference polynomial
polynomials
low-complexity algorithm
co-prime array
direction-of-arrival estimation
reduced complexity
ULAs
CPA
unitary transformation technique
narrow-band signals
direction-of-arrivals
fast DOA estimation
uniform linear arrays
DOAs
first-order derivatives
array signal processing
ISSN:0013-5194, 1350-911X, 1350-911X
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Abstract A new method is proposed to estimate the direction-of-arrivals (DOAs) of multiple narrow-band signals using a co-prime array (CPA). The CPA is divided into two uniform linear arrays (ULAs) and two polynomials are derived by utilising the unitary transformation technique on the covariance matrices of these two ULAs. Rather than rooting the two polynomials straightforwardly, their first-order derivatives are exploited to construct a new difference polynomial, and DOAs are uniquely estimated without ambiguity by finding the roots of this difference polynomial that lie closest to the unit circle. The new technique shows improved accuracy with reduced complexity as compared to most state-of-the-art methods, which are verified by numerical simulations.
AbstractList A new method is proposed to estimate the direction‐of‐arrivals (DOAs) of multiple narrow‐band signals using a co‐prime array (CPA). The CPA is divided into two uniform linear arrays (ULAs) and two polynomials are derived by utilising the unitary transformation technique on the covariance matrices of these two ULAs. Rather than rooting the two polynomials straightforwardly, their first‐order derivatives are exploited to construct a new difference polynomial, and DOAs are uniquely estimated without ambiguity by finding the roots of this difference polynomial that lie closest to the unit circle. The new technique shows improved accuracy with reduced complexity as compared to most state‐of‐the‐art methods, which are verified by numerical simulations.
Author Yan, Feng-Gang
Liu, Shuai
Wang, Jun
Jin, Ming
Shen, Yi
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  organization: Harbin Institute of Technology, Weihai 264209, People's Republic of China
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10.1049/el.2016.3944
10.1109/TSP.2014.2298384
10.1109/TSP.2014.2354316
10.1049/el.2015.2261
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Issue 7
Keywords covariance matrices
difference polynomial
polynomials
low-complexity algorithm
co-prime array
direction-of-arrival estimation
reduced complexity
ULAs
CPA
unitary transformation technique
narrow-band signals
direction-of-arrivals
fast DOA estimation
uniform linear arrays
DOAs
first-order derivatives
array signal processing
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Snippet A new method is proposed to estimate the direction-of-arrivals (DOAs) of multiple narrow-band signals using a co-prime array (CPA). The CPA is divided into two...
A new method is proposed to estimate the direction‐of‐arrivals (DOAs) of multiple narrow‐band signals using a co‐prime array (CPA). The CPA is divided into two...
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SubjectTerms Antennas and propagation
array signal processing
covariance matrices
co‐prime array
CPA
difference polynomial
direction‐of‐arrival estimation
direction‐of‐arrivals
DOAs
fast DOA estimation
first‐order derivatives
low‐complexity algorithm
narrow‐band signals
polynomials
reduced complexity
ULAs
uniform linear arrays
unitary transformation technique
Title Fast DOA estimation using co-prime array
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