Performance comparison of time-domain and frequency-domain beamforming techniques for sensor array processing

Hamid, Umar Zakir Abdul; Qamar, Rahim Ali; Waqas, Kashif

doi:10.1109/ibcast.2014.6778172

Cited by 33 publications

(17 citation statements)

References 5 publications

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“…4 a . The imaging results produced by traditional PSBF, traditional SSBF (the frequency‐domain SSBF is adopted here [8, 25]) and the proposed HBF are given in Figs. 4 b–d , respectively.…”

Section: Numerical Simulationsmentioning

confidence: 99%

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Hybrid phase shift and shifted sideband beamforming for large‐aperture MIMO sonar imaging

Liu

Sun

Yang

et al. 2017

IET Radar Sonar & Navi

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A multiple-input multiple-output (MIMO) sonar can form a large-aperture virtual uniform linear array (ULA) from a small number of physical elements. However, the large-aperture MIMO sonar encounters a dilemma between the computation load and the imaging performance. Since the traditional phase-shift beamformer (PSBF) and shifted sideband beamformer (SSBF) cannot solve the dilemma individually, the authors proposed a hybrid beamformer (HBF) which combines PSBF and SSBF together. Specifically, the proposed HBF contains the off-and on-line processing. In the off-line processing SSBF is applied to the transmitting ULA to process transmitting waveforms. In the on-line processing PSBF is applied to the receiving ULA, and outputs of off-line SSBFs are utilised to matched filter outputs of PSBFs. Thus, in the proposed HBF the time delays of SSBF is calculated off-line; and the multi-beam processing is simplified as PSBFs on the receiving ULA. Consequently, the proposed HBF can reduce the computation load of the large-aperture MIMO sonar effectively while obtaining a fine imaging performance. Numerical simulations show the effectiveness of the proposed HBF.

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Section: Numerical Simulationsmentioning

confidence: 99%

“…7 in [22]). Unlike PSBF, the shifted‐sideband beamformer (SSBF), based on the complex demodulation and the bandpass sampling, can avoid performance degradation [23–25]. Nevertheless, the implementation of the time delay of SSBF increases the computation load severely.…”

Section: Introductionmentioning

confidence: 99%

Hybrid phase shift and shifted sideband beamforming for large‐aperture MIMO sonar imaging

Liu

Sun

Yang

et al. 2017

IET Radar Sonar & Navi

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“…The results of [3] showed that three beamforming techniques out of seven namely Bartlett, MUSIC, and 2D-FFT provided optimwn performance in comparison to other techniques and 2D-FFT beamforming was selected as the best possible option. This paper further extends the work presented in [3] by applying the three beamforming techniques namely Bartlett, MUSIC, and 2D-FFT to real-time data acquired through a linear sensor arr ay and their detection capability has been evaluated in terms of accurately resolving the incoming targets.…”

Section: Introductionmentioning

confidence: 98%

“…Authors in [3] presented a performance comparison of different beamforming techniques in terms of their processing requirements and execution times on general purpose processors. The results of [3] showed that three beamforming techniques out of seven namely Bartlett, MUSIC, and 2D-FFT provided optimwn performance in comparison to other techniques and 2D-FFT beamforming was selected as the best possible option.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the detection capability of different beamforming techniques based on real-time data of underwater sensor arrays

Hamid¹,

Qamar²

2015

2015 12th International Bhurban Conference on Applied Sciences and Technology (IBCAST)

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This paper aims to evaluate the detection capability of three different beamforming techniques namely Bartlett, MUSIC, and 2D-FFT. MATLAB simulations of these techniques have been developed and applied on real-time data acquired through a linear sensor array. The simulation results and data analysis showed that 2D-FFT beamforming technique provides the best possible detection as compared to other techniques in terms of resolving the incoming targets accurately.

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“…When the shift-invariant point spread function assumption is not valid, the performance of the algorithms is more highly varied. Other investigations have compared the speed of each algorithm, 15 demonstrating that some frequency-domain algorithms can perform at speeds equaling or exceeding the speed of some more traditional time-domain algorithms.…”

Section: Introductionmentioning

confidence: 99%

Experimental determination of the effects of boundary reflection on the angular resolution of microphone arrays

Aldeman

Raman

2018

Building Acoustics

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The Rayleigh criterion has long been considered the standard criterion for angular resolution of imaging systems, including microphone arrays. However, advanced beamforming methods have been developed in the past 20 years that have dramatically improved the angular resolution of microphone array systems. In this investigation, the angular resolution performance of three scaled microphone arrays and one alternative array geometry were tested with both approximately free-field and reflective boundary conditions. All of the arrays were subjected to a thorough regimen of testing with broadband acoustic sources. Beamforming analysis was performed with the Delay-and-Sum, TIDY, DAMAS, DAMAS2, and CLEAN-SC algorithms. The Delay-and-Sum algorithm is shown to offer the lowest angular resolution performance because it does not separate the acoustic source map from the point spread function of the array. The DAMAS algorithm offers the greatest angular resolution because it numerically deconvolutes the acoustic source map from the point spread function. However, deconvolution-based algorithms (DAMAS and DAMAS2) were the most negatively affected by boundary reflection effects. The logarithmic spiral array is shown to offer versatile performance across a wide range of frequencies, while an alternative quasi-periodic array yields results that are highly frequency-dependent. It is demonstrated that this is because of gaps in the source-to-element differences coverage, and the gaps in coverage correspond to half-wavelengths of frequency bands with significantly lower angular resolution performance.

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Performance comparison of time-domain and frequency-domain beamforming techniques for sensor array processing

Cited by 33 publications

References 5 publications

Hybrid phase shift and shifted sideband beamforming for large‐aperture MIMO sonar imaging

Hybrid phase shift and shifted sideband beamforming for large‐aperture MIMO sonar imaging

Evaluating the detection capability of different beamforming techniques based on real-time data of underwater sensor arrays

Experimental determination of the effects of boundary reflection on the angular resolution of microphone arrays

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