Results 21 to 30 of about 14,004 (260)

Robust Rank Reduction Algorithm with Iterative Parameter Optimization and Vector Perturbation

open access: yesAlgorithms, 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
doaj   +1 more source

A Full Loading-Based MVDR Beamforming Method by Backward Correction of the Steering Vector and Reconstruction of the Covariance Matrix

open access: yesApplied Sciences, 2022
In order to improve the performance of the diagonal loading-based minimum variance distortionless response (MVDR) beamformer, a full loading-based MVDR beamforming method is proposed in this paper. Different from the conventional diagonal loading methods,
Jing Zhou, Changchun Bao
doaj   +1 more source

Iterative robust adaptive beamforming

open access: yesEURASIP Journal on Advances in Signal Processing, 2017
The minimum power distortionless response beamformer has a good interference rejection capability, but the desired signal will be suppressed if signal steering vector or data covariance matrix is not precise. The worst-case performance optimization-based
Yang Li, Hong Ma, Li Cheng
doaj   +1 more source

Adaptive target detection against spatially correlated compound-Gaussian clutter with multivariate inverse Gaussian texture

open access: yesThe Journal of Engineering, 2019
To improve the detection performance in the presence of target-steering vector mismatches, a novel robust adaptive matched filter (AMF) detector for compound Gaussian clutter is proposed.
Xiaolin Zhang, Liang Yan, Quanhua Liu
doaj   +1 more source

Self-steering partially coherent vector beams

open access: yesOptics Express, 2019
We introduce a class of self-steering partially coherent vector optical beams with the aid of a generalized complex Gaussian representation. We show that such partially coherent vector beams have mobile guiding centers of their intensity and polarization state distributions on the beam free space propagation that could be employed to generate far-field
Haidan Mao   +5 more
openaire   +2 more sources

Analysing the Generalisation and Reliability of Steering Vectors

open access: yesAdvances in Neural Information Processing Systems 37
Steering vectors (SVs) have been proposed as an effective approach to adjust language model behaviour at inference time by intervening on intermediate model activations. They have shown promise in terms of improving both capabilities and model alignment. However, the reliability and generalisation properties of this approach are unknown.
Daniel Tan 0001   +6 more
openaire   +4 more sources

Study on classification and identification methods of driver steering characteristics

open access: yesJournal of Hebei University of Science and Technology, 2015
Aiming at the vehicle driver's steering characteristic classification and identification, the research method is initially explored based on CarSim simulation platform.
Gang LI   +3 more
doaj   +1 more source

Steering vector uncertainties and diagonal loading [PDF]

open access: yesProcessing Workshop Proceedings, 2004 Sensor Array and Multichannel Signal, 2005
In this paper, we study the performance of diagonally loaded beam-formers in the presence of steering vector errors i.e. when there exists a mismatch between the actual steering vector of interest and the presumed one. We consider the problem of optimally selecting the loading level with a view to maximise the signal to interference plus noise ratio ...
Vincent, François, Besson, Olivier
openaire   +2 more sources

Bidirectional field-steering and atomic steering induced by a magnon mode in a qubit-photon system

open access: yesScientific Reports, 2023
This paper investigates the cavity–magnon steering and qubit–qubit steering of a hybrid quantum system consisting of a single-mode magnon, a two-qubit state, and a single-mode cavity field in the presence of their damping rates.
Ahmed A. Zahia   +3 more
doaj   +1 more source

Adaptive beamforming method for UAV navigation based on the MISC coarray interpolation

open access: yesDiance yu yibiao
To address the issues of limited degrees of freedom for interference suppression and inter-element mutual coupling in a uniform linear array, this paper proposes an adaptive beamforming method for unmanned aerial vehicle (UAV) navigation based on maximum
LI Hao, ZHOU Shuai, YU Hong, XU Dingjie
doaj   +1 more source

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