Gotowe bibliografie tematyczne / Impulsive noise due to plasma

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Gotowa bibliografia na temat „Impulsive noise due to plasma”

Autor: Grafiati

Data publikacji: 30 listopada 2024

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Impulsive noise due to plasma"

Oh, Hyungkook, Dongho Seo, and Haewoon Nam. "Design of a Test for Detecting the Presence of Impulsive Noise." Sensors 20, no. 24 (2020): 7135. http://dx.doi.org/10.3390/s20247135.

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This paper proposes a new test method of detecting the presence of impulsive noise based on a complementary cumulative density function (CCDF). Impulsive noise severely degrades performance of communication systems and the conventional Kolmogorov–Smirnov (K–S) test may not perform well, because the test does not consider the characteristics of impulsive noise. In order to detect the presence of impulsive noise reliably, the CCDF of measurement samples is analyzed and compared with the CCDF of additive white Gaussian noise to find the difference between those CCDFs. Due to the nature of heavy-t

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Lee, Sang Kwon, and Jung Soo Lee. "Design of Adaptive Filter for Health Monitoring on a Gearbox." Key Engineering Materials 321-323 (October 2006): 1237–40. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.1237.

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Impulsive vibration signals in gearbox are often associated with faults, which lead to due to irregular impacting. Thus these impulsive vibration signals can be used as indicators of machinery faults. However it is often difficult to make objective measurement of impulsive signals because of background noise signals. In order to ease the measurement of impulsive signal embedded in background noise, we enhance the impulsive signals using adaptive signal processing and then analyze them in time and frequency domain by using time-frequency representation. This technique is applied to the diagnosi

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Dai, Jiang’an, Tianshuang Qiu, Shengyang Luan, Quan Tian, and Jiacheng Zhang. "An Improved Toeplitz Approximation Method for Coherent DOA Estimation in Impulsive Noise Environments." Entropy 25, no. 6 (2023): 960. http://dx.doi.org/10.3390/e25060960.

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Direction of arrival (DOA) estimation is an important research topic in array signal processing and widely applied in practical engineering. However, when signal sources are highly correlated or coherent, conventional subspace-based DOA estimation algorithms will perform poorly due to the rank deficiency in the received data covariance matrix. Moreover, conventional DOA estimation algorithms are usually developed under Gaussian-distributed background noise, which will deteriorate significantly in impulsive noise environments. In this paper, a novel method is presented to estimate the DOA of co

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Karakuş, Oktay, Ercan E. Kuruoğlu, and Mustafa A. Altınkaya. "Modelling impulsive noise in indoor powerline communication systems." Signal, Image and Video Processing 14, no. 8 (2020): 1655–61. http://dx.doi.org/10.1007/s11760-020-01708-1.

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Abstract Powerline communication (PLC) is an emerging technology that has an important role in smart grid systems. Due to making use of existing transmission lines for communication purposes, PLC systems are subject to various noise effects. Among those, the most challenging one is the impulsive noise compared to the background and narrowband noise. In this paper, we present a comparative study on modelling the impulsive noise amplitude in indoor PLC systems by utilising several impulsive distributions. In particular, as candidate distributions, we use the symmetric $$\alpha $$ α -Stable (S$$\

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Wang, Houyou, Yong Guo, and Lidong Yang. "Parameter Estimation of LFM Signals Based on FOTD-CFRFT under Impulsive Noise." Fractal and Fractional 7, no. 11 (2023): 822. http://dx.doi.org/10.3390/fractalfract7110822.

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Due to the short duration and high amplitude characteristics of impulsive noise, these parameter estimation methods based on Gaussian assumptions are ineffective in the presence of impulsive noise. To address this issue, a LFM signal parameter estimation method is proposed based on FOTD and CFRFT. Firstly, the mathematical expression of FOTD is presented and its tracking performance is verified. Secondly, the tracked signal is subjected to discrete time CFRFT, and a mathematical optimization model for LFM signal parameter estimation is established on the fractional spectrum characteristic. Fin

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Shafieipour, Mohammad, Heng-Siong Lim, and Teong-Chee Chuah. "Decoding of Turbo Codes in Symmetric Alpha-Stable Noise." ISRN Signal Processing 2011 (March 29, 2011): 1–7. http://dx.doi.org/10.5402/2011/683972.

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This paper investigates the decoding of turbo codes in impulsive symmetric α-stable (SαS) noise. Due to the nonexistence of a closed-form expression for the probability density function (pdf) of α-stable processes, numerical-based SαS pdf is used to derive branch transition probability (btp) for the maximum a posteriori turbo decoder. Results show that in Gaussian noise, the turbo decoder achieves similar performance using both the conventional and the proposed btps, but in impulsive channels, the turbo decoder with the proposed btp substantially outperforms the turbo decoder utilizing the con

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Tian, Tian, Kunde Yang, Fei-Yun Wu, and Ying Zhang. "Channel Estimation for Underwater Acoustic Communications in Impulsive Noise Environments: A Sparse, Robust, and Efficient Alternating Direction Method of Multipliers-Based Approach." Remote Sensing 16, no. 8 (2024): 1380. http://dx.doi.org/10.3390/rs16081380.

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Channel estimation in Underwater Acoustic Communication (UAC) faces significant challenges due to the non-Gaussian, impulsive noise in ocean environments and the inherent high dimensionality of the estimation task. This paper introduces a robust channel estimation algorithm by solving an l1−l1 optimization problem via the Alternating Direction Method of Multipliers (ADMM), effectively exploiting channel sparsity and addressing impulsive noise outliers. A non-monotone backtracking line search strategy is also developed to improve the convergence behavior. The proposed algorithm is low in comple

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Enguix, Ivan Felis, Marta Sánchez Egea, Antonio Guerrero González, and David Arenas. "Acoustic Characterization of Impulsive Underwater Noise Present in Port Facilities: Practical Case in the Port of Cartagena." Proceedings 4, no. 1 (2018): 57. http://dx.doi.org/10.3390/ecsa-5-05755.

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The data recording of underwater noise is a key aspect for the prevention and improvement of management systems of maritime spaces. Thus, due to the presence of activities potentially generating impulsive noise, ports deserve special attention. This article describes and shows the results of the spatial monitoring of both the basal noise and impulsive noise sources present in port facilities. A vessel was equipped with a smart digital hydrophone with a working frequency range between 10 and 200 kHz and an RVR (Received Voltage Response) of, approximately, −170 dB @ 1 V/µPa. Coupling the acoust

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Lee, Sang Kwon, Jinhoi Gu, and Byung-Og Cho. "Damage Identification of an Automotive Engine Based on Detection of Impact Vibration Using an Adaptive Filter." Key Engineering Materials 306-308 (March 2006): 229–34. http://dx.doi.org/10.4028/www.scientific.net/kem.306-308.229.

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In an automotive engine, faults induce impulsive vibrations and thereby degrade engine performance, making it important for an automotive engineer to detect and analyze impulsive vibration signals for fault diagnosis. However, detecting and identifying impulsive signals is often difficult because of interfering signals such as those due to engine firing, harmonics of crankshaft speed and broadband noise components. These interferences hinder early fault detection. To overcome this difficulty we present a two-stage ALEF (Adaptive Line Enhancer Filter) that is capable of enhancing impulsive sign

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Dou, Yuzi, and Sen Li. "Kernel Function-Based Ambiguity Function and Its Application on DOA Estimation in Impulsive Noise." Sensors 22, no. 18 (2022): 6996. http://dx.doi.org/10.3390/s22186996.

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To solve the problem that the traditional ambiguity function cannot well reflect the time-frequency distribution characteristics of linear frequency modulated (LFM) signals due to the presence of impulsive noise, two robust ambiguity functions: correntropy-based ambiguity function (CRAF) and fractional lower order correntropy-based ambiguity function (FLOCRAF) are defined based on the feature that correntropy kernel function can effectively suppress impulsive noise. Then these two robust ambiguity functions are used to estimate the direction of arrival (DOA) of narrowband LFM signal under an i

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Rozprawy doktorskie na temat "Impulsive noise due to plasma"

Kazemzadeh, Osgoei Bentolhoda. "Conception d’un système de transmission haut débit dans un canal doublement sélectif : système de TransPod." Electronic Thesis or Diss., Limoges, 2024. http://www.theses.fr/2024LIMO0055.

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Cette thèse explore la modélisation des canaux et la conception de la couche physique pour améliorer les communications à haut débit dans les canaux sans ﬁl à haute mobilité, en se concentrant spéciﬁquement sur le système TransPod. Le travail commence par une revue complète des canaux sans ﬁl, en se focalisant sur les canaux doublement sélectifs, leurs dégradations, et les techniques de modulation telles que OFDM et OTFS. Nous caractérisons ensuite le canal de transmission du guide TransPod, en examinant à la fois les caractéristiques à grande échelle et à petite échelle, et en traitant le bru

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Części książek na temat "Impulsive noise due to plasma"

Kazemzadeh, Bentolhoda, Ryan Janzen, Hamid Meghdadi, Vahid Meghdadi, and Abbas Bradai. "Modeling of Noise due to a Plasma-Based Contactless Power Transmission System for Ultra-High-Speed Transportation." In Ubiquitous Networking. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-62488-9_12.

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Nandedkar, Deepak. "Further Studies on D.C. Noise in Plasma Due to Electron-Ion Collisions." In Recent Advances in Properties of ‘Physics/Electrical Engineering’ Materials. Book Publisher International (a part of SCIENCEDOMAIN International), 2022. http://dx.doi.org/10.9734/bpi/mono/978-93-5547-658-6/ch7.

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Streszczenia konferencji na temat "Impulsive noise due to plasma"

Bender, S., J. Goellner, A. Heyn, and S. Schultze. "Investigations on Defined Pretreated Magnesium Alloys by Means of Electrochemical Noise." In CORROSION 2008. NACE International, 2008. https://doi.org/10.5006/c2008-08400.

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Abstract A general problem for the technical applications of magnesium alloys is their low corrosion resistance. One important possibility to improve the corrosion behaviour of magnesium alloys is the development of suitable protective coatings. The use of chromate will be no longer desired due to some legal regulations. However, plasma CVD (chemical vapour deposition) processes opens new possibilities for the pretreatment and coating of magnesium alloys. Compared to other chromium free pretreatments magnesium alloys could be improved in their corrosion resistance by using the method of combin

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Zhu, Zheng, and QiJun Zhao. "Numerical Optimization for Rotor Blade-tip Planform with Low HSI Noise Characteristics in Forward Flight." In Vertical Flight Society 71st Annual Forum & Technology Display. The Vertical Flight Society, 2015. http://dx.doi.org/10.4050/f-0071-2015-10070.

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Based on CFD/FW-H_pds methods and hybrid optimization technique, an optimization design procedure for rotor planform with low HSI noise characteristics is established. In this solver, based on the moving-embedded grid methodology, a CFD simulation method for the aerodynamic characteristics of rotor is developed by solving the compressible Reynolds-averaged Navier-Stokes (RANS) equations. Among the optimization process, the high-qualified blade grids are generated by a high-efficient parameterized method. Additionally, the high-speed impulsive (HSI) noise characteristics generated by transonic

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Legg, Matthew W., Alec J. Duncan, Anthony Zaknich, and Michael V. Greening. "Analysis of impulsive biological noise due to snapping shrimp as a point process in time." In OCEANS 2007 - Europe. IEEE, 2007. http://dx.doi.org/10.1109/oceanse.2007.4302279.

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Lee, Sang-Kwon, and Paul R. White. "Fault Identification for Rotating Machinery Using Adaptive Signal Processing and Time-Frequency Analysis." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-4236.

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Abstract Impulsive sound and vibration signals in rotating machinery are often associated with faults which lead to due to irregular impacting. Thus these impulsive sound and vibration signals can be used as indicators of machinery faults. However it is often difficult to make objective measurement of impulsive signals because of background noise signals. In order to ease the measurement of impulsive sounds embedded in background noise, we enhance the impulsive signals using adaptive signal processing and then analyze them in time and frequency domain by using time-frequency representation. Th

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Samimy, Mo, Jin-Hwa Kim, and Martin Kearney-Fischer. "Active Control of Noise in Supersonic Jets Using Plasma Actuators." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59456.

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Noise mitigation has been in the forefront of research and development since the advent of jet engines. Supersonic commercial and especially supersonic military aircraft cannot take the advantages offered by large bypass ratio engines due to significant drag penalty and performance degradation. Therefore, other control techniques must be utilized to reduce noise and satisfy the more recent and looming future stringent noise regulations. A class of plasma actuators has recently been developed at the Ohio State University that offers a significant promise. These actuators possess a wide bandwidt

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Rachaprolu, Joel Sundar, and Eric Greenwood. "Helicopter Noise Source Separation Using an Order Tracking Filter." In Vertical Flight Society 78th Annual Forum & Technology Display. The Vertical Flight Society, 2022. http://dx.doi.org/10.4050/f-0078-2022-17433.

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Due to the importance of understanding the aeroacoustics of rotorcraft with continually changing noise sources, this paper presents a new technique for source separation from ground-based acoustic measurements. The source separation process is based on combining a time-domain de-Dopplerization method with the Vold-Kalman (VK) order tracking filter approach. This process can extract rotor harmonic noise even when the sources are continuously changing with time, including impulsive events such as Blade Vortex Interaction (BVI) noise. The advantage of this approach over traditional methods such a

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Lemire, Se´bastien, and Huu Duc Vo. "Reduction of Fan and Compressor Wake Defect Using Plasma Actuation for Tonal Noise Reduction." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50821.

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This paper proposes a new technique to reduce the noise generated by rotor-stator interaction (tonal noise) in fans and compressors. The method involves the use of single dielectric barrier discharge (plasma) actuators near the blade trailing edge to reduce blade wakes. Plasma actuators are a new and simple type of active flow control device consisting of two parallel and offset electrodes separated by a layer of dielectric material. The application of a high AC voltage at high frequency to the electrodes generates a body force on the flow in the vicinity of the electrodes to inject momentum w

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Zhang, Weiming, and Tomio Koyama. "A Study on Noise in Synchronous Belt Drives: Experimental and Theoretical Analysis of Impact Sound." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/ptg-14409.

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Abstract There are two kinds of noise in synchronous belt drives. One is steady sound caused by transverse vibration of belt, and another is impact sound radiating from meshing point of belt and pulley. Recently, it has been reported that the impact sound is due to the sound occurring in an air pipe built up between pulley groove and belt because the frequency of impact sound coincides with the fundamental natural frequency of an open ended pipe whose length equals width of the belt. However, this conclusion is obtained experimentally, there has no theoretical analysis provided. In this study,

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Rodrigues, F. F., J. C. Pascoa, and M. Trancossi. "Experimental Thermal Characterization of DBD Plasma Actuators." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70541.

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DBD plasma actuators have several applications within the field of active flow control. Separation control, wake control, aircraft noise reduction, modification of velocity fluctuations or boundary layer control are just some examples of their applications. They present several attractive features such as, their simple construction, very low mass, fast response, low power consumption and robustness. Besides their aerodynamic applications, these devices have also possible applications within the field of heat transfer, for example film cooling applications. However, due to the extremely high el

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Kim, Jin-Hwa, Martin Kearney-Fischer, Mo Samimy, and Sivaram Gogineni. "Far-Field Noise Control in Supersonic Jets From Conical and Contoured Nozzles." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22377.

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Plasma actuators are used to control far-field noise in Mach 1.65 jets from contoured and conical supersonic axisymmetric nozzles (henceforth contoured and conical jets, respectively). The contoured nozzle is designed using the method of characteristics for shock-free jet. The conical nozzle has converging and diverging conical sections with a sharp throat. Eight plasma actuators, distributed uniformly around the nozzle exit, are used and the jet is forced with azimuthal modes (m) 0–3, and ±4 and forcing Strouhal numbers ranging from 0.09 to 4.0. The far-field acoustic noise is measured by a l

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Raporty organizacyjne na temat "Impulsive noise due to plasma"

ESA, ESA EOP-SM, and NASA SMD NASA. Exploring Earth’s Interface with Space – The Scientific Case for a Satellite Mission to the Lower Thermosphere-Ionosphere Transition Region. ESA, 2024. http://dx.doi.org/10.5270/esa-nasa.lti-sc.2024-07-v1.0.

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Exploring Earth’s Interface with Space – The Scientific Case for a Satellite Mission to the Lower Thermosphere-Ionosphere Transition Region SUMMARY This report describes the scientific case for a mission concept to study the Earth’s Lower Thermosphere-Ionosphere – the LTI – which is the interface region between our atmosphere and space. The LTI is situated at altitudes between 100-200 km and is uniquely characterized by complex interactions between the co-existing neutral and ionized gases. The LTI receives and dissipates hundreds of gigajoules of energy every second from above due to solar wi

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