Results 11 to 20 of about 1,799 (215)
ICT Express, 2020 Up to date, investigation of direction of arrival (DOA) gains more effort on multiple signals rather than coherent signals, particularly coherent signals measured by non-uniform and circular arrays — which still remains room for exploration.
Van-Sang Doan, Dong-Seong Kim
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An Oblique Projection-Based Beamforming Method for Coherent Signals Receiving
Remote Sensing, 2022 Within a complex sea or ground surface background, multipath signals are strongly correlated or even completely coherent, which leads to signal cancellation when conventional optimal beamforming is performed.
Yumei Guo +4 more
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Direction-of-Arrival Estimation for Both Uncorrelated and Coherent Signals in Coprime Array
IEEE Access, 2019 Direction-of-arrival (DOA) estimation in coprime array involves the problem that there is the coexistence of both uncorrelated signals and coherent signals in the multipath environment.
Haiyun Xu +4 more
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Signal estimation and coherence [PDF]
Optics Letters, 2021 We address the relation between quantum metrological resolution and quantum coherence. We develop a quantum version of the Wiener–Khintchine theorem for a suitable model of a quantum ruler, putting the contributions of the probe and measurement on equal footing. We illustrate this approach with several examples of linear metrology.
Laura Ares, Alfredo Luis
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An Enhanced Spatial Smoothing Technique of Coherent DOA Estimation with Moving Coprime Array
Sensors, 2023 This paper investigates the direction of arrival (DOA) estimation of coherent signals with a moving coprime array (MCA). Spatial smoothing techniques are often used to deal with the covariance matrix of coherent signals, but they cannot be used in sparse
Meng Yang +3 more
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Sensors, 2023 Multiple autonomous underwater vehicles (AUVs) have gradually become the trend in underwater operations. Identifying and detecting these new underwater multi-targets is difficult when studying underwater moving targets. A 28-element transducer is used to
Xiaofeng Yin +3 more
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Enhancing the Signal of Corticomuscular Coherence [PDF]
Computational and Mathematical Methods in Medicine, 2012 The availability of multichannel neuroimaging techniques, such as MEG and EEG, provides us with detailed topographical information of the recorded magnetic and electric signals and therefore gives us a good overview on the concomitant signals generated in the brain.
C. Micheli, Braun, Heinrich Christoph
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Journal of Marine Science and Engineering, 2023 Detection of underwater coherent interference is necessary as its presence affects the estimation of the desired target. In this work, a method based on high-order particle velocity gradient polarization characteristics is proposed to distinguish the ...
Di Wu, Lanyue Zhang, Jia Wang, Xueru Hu
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Efficient DOA Estimation for Wideband Sources in Multipath Environment
Remote Sensing, 2022 A novel direction-of-arrival (DOA) estimator is proposed for the mixed uncorrelated and correlated wideband sources in the multipath environment. Firstly, the novel signal model is established using the aligned envelope technique. Next, the estimator can
Xiaoyu Zhang +3 more
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Signal recovery under cumulative coherence [PDF]
Journal of Computational and Applied Mathematics, 2019 This paper considers signal recovery in the framework of cumulative coherence. First, we show that the Lasso estimator and the Dantzig selector exhibit similar behavior under the cumulative coherence. Then we estimate the approximation equivalence between the Lasso and the Dantzig selector by calculating prediction loss difference under the condition ...
Peng Li 0025, Wengu Chen
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