Direction finding for two-dimensional incoherently distributed sources with Hadamard shift invariance in non-uniform orthogonal arrays

Dai, Zhengliang; Cui, Weijia; Wang, Da-Ming; Ba, Bin; Wang, Chao; Zhang, Yankui

doi:10.1016/j.cja.2018.08.010

“…Assume that K(K ≤ M ) uncorrelated narrowband ID sources impinge on the ULOA. The array output vectors x(t) and y(t) of arrays X and Y can be expressed as [17] x…”

Section: Data Modelmentioning

confidence: 99%

“…(4) Perform the eigendecomposition on Ψx and Ψy to obtain Λx and Λy, which is matched using the matching technique in [17];…”

Section: Table 1: Proposed Algorithmmentioning

confidence: 99%

SIS-BAM Algorithm for Angular Parameter Estimation of 2-D Incoherently Distributed Sources

Liu

¹

,

Tang

²

,

Qin

³

2022

Wireless Pers Commun

0

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For two-dimensional (2-D) incoherently distributed sources, this paper presents an effective angular parameter estimation method based on shift invariant structure (SIS) of the beamspace array manifold (BAM), named as SIS-BAM algorithm. In the proposed method, a shift invariance structure (SIS) of the observed vectors is firstly established utilizing a generalized array manifold of an uniform linear orthogonal array (ULOA). Secondly, based on Fourier basis vectors and the SIS, a beamspace transformation matrix can be performed. It projects received signals into the corresponding beamspace, so as to carry out dimension reduction of observed signals in beamspace domain. Finally, according to the SIS of beamspace observed vectors, the closed form solutions of the nominal azimuth and elevation are derived. Compared with the previous works, the presented SIS-BAM method provides better estimation performance, for example: 1) the computational complexity is reduced due to dealing with low-dimension beamspace signals and avoiding spectral search; 2) it can not only improve the angular parameter estimation accuracy but also have excellent robustness to the change of signal-to-noise ratio (SNR) and snapshot number. The theoretical analysis and simulation results confirm the effectiveness of the proposed method.

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“…(5) Estimate the nominal azimuth DOA and elevation DOAθ k andφ k via ( 16) and (17). , namely, the total number of sensors is 36.…”

Section: Computational Complexitymentioning

confidence: 99%

SIS-BAM Algorithm for Angular Parameter Estimation of 2-D Incoherently Distributed Sources

Liu

¹

,

Tang

²

,

Qin

³

2021

Preprint

0

View full text Add to dashboard Cite

For two-dimensional (2-D) incoherently distributed sources, this paper presents an effective angular parameter estimation method based on shift invariant structure (SIS) of the beamspace array manifold (BAM), named as SIS-BAM algorithm. In the proposed method, a shift invariance structure (SIS) of the observed vectors is firstly established utilizing a generalized array manifold of an uniform linear orthogonal array (ULOA). Secondly, based on Fourier basis vectors and the SIS, a beamspace transformation matrix can be performed. It projects received signals into the corresponding beamspace, so as to carry out dimension reduction of observed signals in beamspace domain. Finally, according to the SIS of beamspace observed vectors, the closed form solutions of the nominal azimuth and elevation are derived. Compared with the previous works, the presented SIS-BAM method provides better estimation performance, for example: 1) the computational complexity is reduced due to dealing with low-dimension beamspace signals and avoiding spectral search; 2) it can not only improve the angular parameter estimation accuracy but also have excellent robustness to the change of signal-to-noise ratio (SNR) and snapshot number. The theoretical analysis and simulation results confirm the effectiveness of the proposed method.

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Design and Implementation of Photovoltaic Power Generation Management System Based on NB-IoT

Yang

¹

,

Zhou

²

2021

2021 IEEE International Conference on Information Communication and Software Engineering (ICICSE)

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Direction finding for two-dimensional incoherently distributed sources with Hadamard shift invariance in non-uniform orthogonal arrays

Cited by 4 publications

References 21 publications

SIS-BAM Algorithm for Angular Parameter Estimation of 2-D Incoherently Distributed Sources

SIS-BAM Algorithm for Angular Parameter Estimation of 2-D Incoherently Distributed Sources

SIS-BAM Algorithm for Angular Parameter Estimation of 2-D Incoherently Distributed Sources

Design and Implementation of Photovoltaic Power Generation Management System Based on NB-IoT

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