Low-complexity DOA estimation method for a co-prime linear array

The problem of direction-of-arrival (DOA) estimation for a co-prime linear array is researched. A low-complexity DOA estimation method is proposed. The co-prime array is decomposed into two sparse uniform linear sub-arrays whose inter-element spacing meets the co-prime condition. Then the received s...

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Vydáno v:Journal of engineering (Stevenage, England) Ročník 2019; číslo 20; s. 6503 - 6506
Hlavní autoři: Wu, Xuchen, Yang, Xiaopeng, Han, Bowen, Xu, Feng
Médium: Journal Article
Jazyk:angličtina
Vydáno: The Institution of Engineering and Technology 01.10.2019
Wiley
Témata:
array signal processing
co-prime array
co-prime condition
co-prime linear array
co-prime nature
direction-of-arrival estimation
IET International Radar Conference (IRC 2018)
inter-element spacing
low-complexity doa estimation method
phase ambiguity
signal classification
signal processing
sparse array element spacing
sparse uniform linear sub-arrays
statistical signal processing
statistical signal processing
signal processing
inter-element spacing
sparse array element spacing
co-prime array
direction-of-arrival estimation
co-prime linear array
signal classification
low-complexity DOA estimation method
co-prime condition
co-prime nature
phase ambiguity
sparse uniform linear sub-arrays
array signal processing
ISSN:2051-3305, 2051-3305
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Popis
Shrnutí:The problem of direction-of-arrival (DOA) estimation for a co-prime linear array is researched. A low-complexity DOA estimation method is proposed. The co-prime array is decomposed into two sparse uniform linear sub-arrays whose inter-element spacing meets the co-prime condition. Then the received signals of the two sub-arrays are processed for statistical signal processing. Although the DOA estimation based on the under-sampled signal will produce phase ambiguity, the sparse array element spacing that satisfies the co-prime condition makes the phase ambiguity have certain periodic rules. Finally, the unique solution corresponding to the true DOA can be obtained in the phase ambiguities of the two sub-arrays through the application of the co-prime nature. Simulation results validate the effectiveness of the proposed method.
ISSN:2051-3305
2051-3305
DOI:10.1049/joe.2019.0272