Results 11 to 20 of about 97,888 (314)
An Improved Array Steering Vector Estimation Method and Its Application in Speech Enhancement [PDF]
EURASIP Journal on Advances in Signal Processing, 2005 We propose a robust microphone array for speech enhancement and noise suppression. To overcome target signal cancellation problem of conventional beamformes caused by array imperfections or reverberation effects, the proposed method adopts arbitrary ...
Meng Hwa Er, Zhu Liang Yu
doaj +3 more sources
Amplitude estimation of a signal with known waveform in the presence of steering vector uncertainties [PDF]
IEEE Transactions on Signal Processing, 2005 In this correspondence, we address the problem of estimating the amplitude of a signal with known waveform received on an array of sensors and we consider the case where there exist uncertainties about the spatial signature of the signal of interest. Closed-form expressions for the Crame/spl acute/r-Rao bound are derived and the respective influence of
Olivier Besson +2 more
core +8 more sources
Implementation of Accurate Broadband Steering Vectors for Broadband Angle of Arrival Estimation [PDF]
IET Intelligent Signal Processing Conference 2013 (ISP 2013), 2013 Motivated by accurate broadband steering vector requirements for applications such as broadband angle of arrival estimation, we review fractional delay filter designs. A common feature across these are their rapidly decreasing performance as the Nyquist rate is approached.
Alrmah, Mohamed Abubaker +2 more
openaire +3 more sources
EURASIP Journal on Advances in Signal Processing, 2023 The performance of adaptive beamforming is considerably affected by system errors in the gain and phase perturbation errors, direction of arrival mismatch, and incoherent local scattering, especially when the sample data contains the signal of interest ...
Yan Lv +4 more
semanticscholar +2 more sources
Source Bearing and Steering-Vector Estimation using Partially Calibrated Arrays [PDF]
IEEE Transactions on Aerospace and Electronic Systems, 2009 The problem of source direction-of-arrival (DOA) estimation using a sensor array is addressed, where some of the sensors are perfectly calibrated, while others are uncalibrated. An algorithm is proposed for estimating the source directions in addition to the estimation of unknown array parameters such as sensor gains and phases, as a way of performing ...
Li, M., Lu, Y.
openaire +4 more sources
Journal of Marine Science and Engineering, 2019 Capon beamforming is often applied in passive sonar to improve the detectability of weak underwater targets. However, we often have no accurate prior information of the direction-of-arrival (DOA) of the target in the practical applications of passive ...
Yu Hao, Nan Zou, Guolong Liang
doaj +2 more sources
DOA estimation using a broadband steering vector [PDF]
OCEANS 2010 MTS/IEEE SEATTLE, 2010 The steering vector has traditionally been useful only for narrowband signals because it is based on a specific wavelength. It is possible to construct a more general steering vector that is based on the sample period. This allows a variety of array processing techniques to be used fro broadband signals.
exaly +2 more sources
Robust Rank Reduction Algorithm with Iterative Parameter Optimization and Vector Perturbation
Algorithms, 2015 In dynamic propagation environments, beamforming algorithms may suffer from strong interference, steering vector mismatches, a low convergence speed and a high computational complexity.
Peng Li, Jiao Feng, Rodrigo C. de Lamare
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Tensor Approach to DOA Estimation of Coherent Signals with Electromagnetic Vector-Sensor Array
Sensors, 2018 This paper addresses the direction-of-arrival (DOA) estimation problem using a uniform rectangular array with electromagnetic vector-sensors in correlated/coherent signal environments. The polarization information is separated from the steering matrix to
Ming-Yang Cao +3 more
doaj +2 more sources
Robust adaptive beamforming using beam‐space steering vector estimation
Electronics Letters, 2013 To solve the problem of performance degradation owing to imprecise knowledge of the array steering vector and inaccurate estimation of the sample covariance matrix, a novel algorithm based on beam‐space steering vector estimation for robust adaptive beamforming is presented.
T Su
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