Results 141 to 150 of about 773,085 (199)

Sparse Array Signal Processing

2023
This dissertation details three approaches for direction-of-arrival (DOA) estimation or beamforming in array signal processing from the perspective of sparsity. In the first part of this dissertation, we consider sparse array beamformer design based on the alternating direction method of multipliers (ADMM); in the second part of this dissertation, the ...
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Array signal processing

1983
Array signal processing (ASP) represents a class of antenna system where the output from an array is subjected to various forms of signal processing (e.g. phase and amplitude control, time delay or frequency translation) in order to produce outputs which can simultaneously provide angular information relating to several different directions.
D. E. Davies, K. G. Corless, D. S. Hicks, K. Milne   +3 more
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Array signal processing for QR

Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002., 2002
The amplitude estimation of a signal whose waveform is known (up to an unknown scaling factor) in the presence of interference and noise is of interest in several applications including using the emerging quadrupole resonance (QR) technology for explosive detection.
null Yi Jiang, Jian Li, P. Stoica
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Signal-Independent Array Processing

2016
The process of combining signals acquired by a microphone array in order to ‘focus’ on a signal in a specific direction is known as beamforming or spatial filtering. This chapter considers signal-independent (fixed) beamformers, controlled by weights only dependent on the direction of arrival of the source to be extracted, and which do not otherwise ...
Daniel P. Jarrett, Emanuël A. P. Habets, Patrick A. Naylor   +2 more
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Signal processing by pulse‐driven molecular arrays

International Journal of Circuit Theory and Applications, 2003
AbstractIn this paper cellular array processors composed of weakly Coulomb coupled molecules are studied. Equivalent circuits for molecules performing optically induced electron and proton transfer are presented, and pulse‐driven computing architectures are proposed.
Csurgay, Árpád I., Porod, Wolfgang, Rakos, Balázs   +2 more
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Signal-Dependent Array Processing

2016
In this chapter, we derive spherical harmonic domain signal-dependent beamformers, whose weights depend on the second-order statistics of the desired signal and/or of the noise to be suppressed. These beamformers adaptively seek to achieve optimal performance in terms of noise reduction and speech distortion.
Daniel P. Jarrett, Emanuël A. P. Habets, Patrick A. Naylor   +2 more
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Array signal processing in Four-Dimensional antenna arrays

2010 International Conference on Communications, Circuits and Systems (ICCCAS), 2010
The direction of arrival (DOA) estimation and adaptive beamforming (ABF) in Four-Dimensional (4-D) antenna arrays are presented in this paper. By using time modulation technique with appropriate time sequences, multiple beams can be obtained in the 4-D antenna arrays and each of them is located at different directions.
Shiwen Yang, Gang Li, Zaiping Nie
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Sonar array signal processing for sparse linear arrays

ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359), 2003
Acoustic signals which propagate through the ocean have wavefronts which can differ significantly from the "planar wavefronts" assumed in array signal processing. In this paper we investigate the performance of the the minimum variance distortionless response (MVDR) beamformer and the previously introduced Fourier integral method (FIM), when applied to
I.S.D. Solomon, A.J. Knight, M.V. Greening   +2 more
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Array signal processing

2001
In this chapter, an overview of the fundamentals of array signal processing is provided with a particular emphasis on recent advances in direction-ofarrival (DOA) estimation and adaptive beamforming. It is then highlighted that the signal models used in array processing and space-time block coded MIMO communications are rather similar. At the same time,
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Signal Eigenvector Method For General Array Signal Processing

SPIE Proceedings, 1988
A high resolution algorithm is presented for resolving multiple incoherent and coherent plane waves incident on an array of sensors. The incident sources may be a mixture of narrowband and broadband sources, and, the array's geometry is unrestricted. This algorithm makes use of a fundamental property associated with the signal eigenvectors of the array'
James A. Cadzow, Young-Soo Kim, Dong-Chang Shiue   +2 more
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