A low-complexity RARE-based 2-D DOA estimation algorithm for a mixture of circular and strictly noncircular sources

Kashif SHABIR; Tarek  Hasan Al MAHMUD; Rui ZHENG; Zhongfu YE

Makale detayları

A low-complexity RARE-based 2-D DOA estimation algorithm for a mixture of circular and strictly noncircular sources

Yazarlar:

Kashif SHABIR | Tarek Hasan Al MAHMUD | Rui ZHENG | Zhongfu YE

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2018 Vol.26 Issue 5, pp.2234-2245

Belge Tipi:

Makale

Yayın Tarihi:

9/2018

Belge Dili:

Türkçe

Document ID (Org No.):

2000734678

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

A new rank reduction (RARE)-based two-dimensional (2-D) direction of arrival (DOA) estimation algorithm is proposed considering a mixture of circular and strictly noncircular sources. To enhance array aperture, a geometry of three uniform linear arrays is considered and then treated as displaced arrays from a virtual array using a simple linear transformation. The received data and the conjugated counterpart are combined together, exploiting the noncircular property. Both sources can be estimated separately by designing and exploiting the distinctive nature of circular and noncircular steering vectors. However, a 2-D spectrum search would lead to a high computational complexity burden. To reduce this high computational complexity burden, a novel RARE-based method is proposed, which plays a vital role by decomposing 2-D observation space into two successive 1-D peak search functions. The proposed method has some distinctive advantages: it can enhance the array aperture utilization, it can provide better estimation accuracy when mixed sources are greater than the number of sensors, it can estimate a larger number of mixed sources than the number of sensors, and finally it can automatically pair 2-D DOAs without any complicated pairing formulation. Extensive simulation results are provided to demonstrate the effectiveness of the proposed method.

Makale detayları

A low-complexity RARE-based 2-D DOA estimation algorithm for a mixture of circular and strictly noncircular sources

Yazarlar: Kashif SHABIR | Tarek Hasan Al MAHMUD | Rui ZHENG | Zhongfu YE

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2018 Vol.26 Issue 5, pp.2234-2245

Belge Tipi: Makale

Yayın Tarihi: 9/2018

Belge Dili: Türkçe

Document ID (Org No.): 2000734678

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Kashif SHABIR | Tarek Hasan Al MAHMUD | Rui ZHENG | Zhongfu YE

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2018 Vol.26 Issue 5, pp.2234-2245

Belge Tipi:

Makale

Yayın Tarihi:

9/2018

Belge Dili:

Türkçe

Document ID (Org No.):

2000734678

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632