L-shaped coprime array structures for DOA estimation
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Dosyalar
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This paper proposes a new sparse array geometry for 2-D (azimuth and elevation) directionof-arrival (DOA) estimation based on coprime sampling. The proposed array structure is L-shaped coprime array (LCA) whose each portion is one dimensional coprime linear arrays in y- and z-dimensions. Each portion of the array is used separately for 1-D azimuth and elevation angle estimation. In order to obtain the paired DOA estimates the cross-covariance matrix of two portion of the array is utilized and the paired DOA angles are estimated. LCA provides to estimate K <= MN source directions with 2M+ N-1 sensors in each portion and totally 4M + 2N - 3 sensor elements. The proposed method is evaluated through numerical simulations and its performance is compared with other coprime planar array structures. It is shown that LCA has less computational complexity together with less real sensor elements and it provides superior performance as compared to the conventional 2-D coprime planar arrays.
Açıklama
Anahtar Kelimeler
L-shaped arrays, Coprime arrays, Sparse arrays, Direction of arrival estimation, Definite Toeplitz Completion, Linear Antenna-Arrays, 2-D Doa, Geometry, Coarray
Kaynak
Multidimensional Systems And Signal Processing
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
31
Sayı
1
