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Localization of multiple narrowband acoustic sources in spherical harmonic domain
2011 4th International Congress on Image and Signal Processing, 2011This paper presents a new method for the localization of multiple narrowband acoustic sources using spherical microphone arrays. The space-time array signal model is transformed into spherical harmonic domain by spherical Fourier transform (SFT). Then subspace decomposition technique is used to obtain signal and noise subspace in the domain. Relying on
Tao Song, Qinghua Huang
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Multiple harmonic source detection for power system with cascade correlation network
2004 IEEE International Conference on Electric Utility Deregulation, Restructuring and Power Technologies. Proceedings, 2004This paper presents the design of a harmonic source detection system with cascade correlation network (CCN). Harmonic power flow with current injection model calculates bus voltages and total harmonic distortion (THD). THD indices of voltages are used to determine measurement placement in the power system.
null Whei-Min Lin +3 more
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Predicting voltage distortion in a system with multiple random harmonic sources
IEEE Transactions on Power Delivery, 1994A method for statistically describing power system harmonic voltages in terms of the parameters of the harmonic current sources is presented. It is shown that for a large enough number of sources, a complete probabilistic characterization of the harmonic voltages can be found in terms of the second order moments of each current phasor's rectangular ...
S.R. Kaprielian +3 more
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2020 IEEE/IAS Industrial and Commercial Power System Asia (I&CPS Asia), 2020
Due to the access of a large number of distributed energy sources and power electronic equipment, the power quality problems caused by harmonics have attracted widespread attention. Under the premise of grasping power quality monitoring data, it is urgent to determine the source of harmonics, in order to take targeted measures at the source and improve
Jianping Yang +3 more
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Due to the access of a large number of distributed energy sources and power electronic equipment, the power quality problems caused by harmonics have attracted widespread attention. Under the premise of grasping power quality monitoring data, it is urgent to determine the source of harmonics, in order to take targeted measures at the source and improve
Jianping Yang +3 more
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Versatile Sources of High-order Harmonics for Multiple Applications
Conference on Lasers and Electro-Optics, 2017High-order harmonic generation (HHG) in gases and its applications is today an active field of research worldwide. High-order harmonics are created when intense laser radiation interacts with a gas of atoms or molecules. In the time domain, the emission is a train of pulses in the extreme ultraviolet range, separated by half a laser cycle and with ...
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Multiple Harmonic Source Detection and Equipment Identification With Cascade Correlation Network
IEEE Transactions on Power Delivery, 2005This paper presents the design of a harmonic source detection system with a cascade correlation network (CCN). Current-injection-based harmonic power flow was used to calculate bus voltages and total harmonic distortion (THD). THD of voltages is used as indices for meter placement in the power network.
W.-M. Lin, C.-H. Lin, K.-P. Tu, C.-H. Wu
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Mechanical Systems and Signal Processing, 2016
Abstract Air vehicles, space vehicles and underwater vehicles, the cabins of which can be viewed as variable section cylindrical structures, have multiple rotational vibration sources (e.g., engines, propellers, compressors and motors), making the spectrum of noise multiple-harmonic.
Jinxin Liu +3 more
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Abstract Air vehicles, space vehicles and underwater vehicles, the cabins of which can be viewed as variable section cylindrical structures, have multiple rotational vibration sources (e.g., engines, propellers, compressors and motors), making the spectrum of noise multiple-harmonic.
Jinxin Liu +3 more
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Innovative Location Research of Multiple Harmonic Sources Based on Statistical Data Correlation
2012 Asia-Pacific Power and Energy Engineering Conference, 2012Harmonic voltages at PCC of a power grid are the combinations of voltage contributions of each harmonic source located in the same grid. In particular, quantifying harmonic contributions of the customers and the utility system is highly important for power quality management.
Hongzhi Zang, Xia Qian, Xiaodong Yu
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Harmonization of soil field reflectance measurements from multiple sources
This presentation tries to address the urgent need for a standard and protocol for field spectral measurements in the era of hyperspectral remote sensing.Ben Dor, Eyal +3 more
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A method for real-time, multiple-source localization using spherical harmonic decomposition
Journal of the Acoustical Society of America, 2016By taking advantage of the spherical harmonic transform, spherical microphone arrays are able to decompose three-dimensional sound fields into their basic components, which enables detailed analysis and efficient spatial filtering algorithms. In recent years, methods for determining relative source positions around an array have been studied. Weighting
Jonathan Mathews, Jonas Braasch
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