Log in

Relevant bibliographies by topics / Signal-to-leakage-ratio / Journal articles

To see the other types of publications on this topic, follow the link: Signal-to-leakage-ratio.

Journal articles on the topic 'Signal-to-leakage-ratio'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Signal-to-leakage-ratio.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Des Noes, Mathieu. "Distribution of Signal to Noise Ratio and Application to Leakage Detection." IACR Transactions on Cryptographic Hardware and Embedded Systems 2024, no. 2 (2024): 384–402. http://dx.doi.org/10.46586/tches.v2024.i2.384-402.

Full text

Abstract:

In the context of side-channel attacks, the Signal to Noise Ratio (SNR) is a widely used metric for characterizing the information leaked by a device when handling sensitive variables. In this paper, we derive the probability density function (p.d.f.) of the signal to noise ratio (SNR) for the byte value and Hamming Weight (HW) models, when the number of traces per class is large and the target SNR is small. These findings are subsequently employed to establish an SNR threshold, guaranteeing minimal occurrences of false positives. Then, these results are used to derive the theoretical number o

APA, Harvard, Vancouver, ISO, and other styles

2

Fadhil, Mohammed, Nor Fadzilah Abdullah, Mahamod Ismail, Rosdiadee Nordin, Cebrail Ciftlikli, and Musaab Al-Obaidi. "Maximizing signal to leakage ratios in MIMO BCH cooperative beamforming scheme." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 5 (2019): 3701. http://dx.doi.org/10.11591/ijece.v9i5.pp3701-3713.

Full text

Abstract:

Beamforming (BF) technique in cooperative multiple input multiple output (MIMO) antenna arrays improves signal to noise ratio (SNR) of the intended user. The challenge is to design transmit beamforming vectors for every user while limiting the co-channel interference (CCI) from other users. In this paper, we proposed cooperative beamforming based on Signal-to-Leakage Ratio (SLR) to exploit the leakage power as a useful power in the second time slot after user cooperation, for this purpose successive interference cancellation (SIC) is employed in each user to separate the leakage signal from th

APA, Harvard, Vancouver, ISO, and other styles

3

Mohammed, Fadhil, Fadzilah Abdullah Nor, Ismail Mahamod, Nordin Rosdiadee, Ciftlikli Cebrail, and Al-Obaidi Musaab. "Maximizing signal to leakage ratios in MIMO BCH cooperative beamforming scheme." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 5 (2019): 3701–13. https://doi.org/10.11591/ijece.v9i5.pp3701-3713.

Full text

Abstract:

Beamforming (BF) technique in cooperative multiple input multiple output (MIMO) antenna arrays improves signal to noise ratio (SNR) of the intended user. The challenge is to design transmit beamforming vectors for every user while limiting the co-channel interference (CCI) from other users. In this paper, we proposed cooperative beamforming based on Signal-to-Leakage Ratio (SLR) to exploit the leakage power as a useful power in the second time slot after user cooperation, for this purpose successive interference cancellation (SIC) is employed in each user to separate the leakage signal from th

APA, Harvard, Vancouver, ISO, and other styles

4

Hao, Yongmei, Ni Qin, Zhixiang Xing, Yujia Wu, and Yunfei Yue. "Research on Gas Pipeline Multi-Point Leak Signal Processing and Source Locating Using VMD, BSS and Relative Entropy." International Journal of Pattern Recognition and Artificial Intelligence 33, no. 10 (2019): 1959033. http://dx.doi.org/10.1142/s021800141959033x.

Full text

Abstract:

The early multi-point leakage source signals of urban gas pipeline are weak and can be easily affected by environmental noise and signal interference between adjacent sources, which causes large leakage positioning error. In this paper, an integrated signal processing method combining VMD, BSS and Relative entropy for multi-point pipeline leakage signal and source positioning is presented. Firstly, VMD and Relative entropy were employed to obtain effective IMF mode components and their features during the decomposition for pipeline leakage signal. Relative entropy was used to improve signal-to

APA, Harvard, Vancouver, ISO, and other styles

5

Peng, Yihua, Jiemin Zhang, Jian Mao, and Mengmeng Cui. "A Signal-Denoising Method for Electromagnetic Leakage from USB Keyboards." Electronics 12, no. 17 (2023): 3647. http://dx.doi.org/10.3390/electronics12173647.

Full text

Abstract:

USB keyboards are commonly used as computer input devices and inevitably generate electromagnetic (EM) leakage signals during their operation, which carry input information. However, due to the weak energy of a keyboard’s EM signal and the small amount of effective information, the received leakage signal is often characterized by a low signal-to-noise ratio (SNR). This low SNR affects the subsequent detection and restoration of the information. In order to solve this problem, this paper proposes a denoising method for USB keyboard EM leakage signals and designs a self-attentive denoising adve

APA, Harvard, Vancouver, ISO, and other styles

6

Beregun, V. S., A. I. Krasilnikov, and T. A. Polobyuk. "ANALYSIS OF THE INFLUENCE OF FILTRATION ON THE SENSITIVITY OF THE CUMULANT METHOD OF DETECTING THE ACOUSTIC SIGNALS OF LEAKAGE." Industrial Heat Engineering 40, no. 2 (2018): 78–83. http://dx.doi.org/10.31472/ihe.2.2018.11.

Full text

Abstract:

An experimental study of the ratio of cumulants of acoustic signals of fluid leakage in a pipeline and interference is carried out. It is shown that the use of bandpass filtering increases the ratio of cumulants by orders of magnitude. The purpose of the article is to analyze the sensitivity of the cumulant method of detecting fluid leaks in a pipeline based on the statistical processing of the acoustic leakage signal and interference generated by the moving fluid flow. To analyze the possibilities of a cumulant leak detection method, it is necessary to have specific values of cumulants

APA, Harvard, Vancouver, ISO, and other styles

7

Issa, Fatima, Laurent Ottaviani, Vanessa Vervisch, et al. "Study of the Stability of 4H-SiC Detectors by Thermal Neutron Irradiation." Materials Science Forum 821-823 (June 2015): 875–78. http://dx.doi.org/10.4028/www.scientific.net/msf.821-823.875.

Full text

Abstract:

Two types of 4H-SiC semiconductor detectors (D1 and D2) are realized based on ion implantation of 10B inside the aluminum metallic contact. The first detector shows a high leakage current after 10B implantation and low signal to noise ratio. However, improvements concerning the implantation parameters led to lower leakage current and thus to higher signal to noise ratio. Moreover such detectors show their stability under different thermal neutron fluxes showing the reproducible features of the pulse height spectra and same electrical behaviour before and after irradiation.

APA, Harvard, Vancouver, ISO, and other styles

8

Wu, Luochang, Sai Wang, and Jianguo Yan. "Signals denoising of leakage pressure in water supply pipelines using an improved wavelet filter algorithm." Journal of Physics: Conference Series 2854, no. 1 (2024): 012069. http://dx.doi.org/10.1088/1742-6596/2854/1/012069.

Full text

Abstract:

Abstract Accurate identification of leakage pressure signal is crucial for leakage detection and location of water supply pipelines. However, there is a lot of noise signals in the negative pressure waves generated during leakage accidents, making it difficult to identify leakage signals, and thus seriously affecting the accuracy of leakage detection. Therefore, in this study, we carried out leakage test of water transmission pipeline on our self-built test platform for transient flow with long-distance water transmission pipeline (pipeline length is 160 m, and diameter is 100 mm), and obtaine

APA, Harvard, Vancouver, ISO, and other styles

9

Patcharamaneepakorn, Piya, Angela Doufexi, and Simon Armour. "Coordinated beamforming schemes based on modified signal-to-leakage-plus-noise ratio precoding designs." IET Communications 9, no. 4 (2015): 558–67. http://dx.doi.org/10.1049/iet-com.2014.0256.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

ZHU, BANGHE, and EVA M. SEVICK-MURACA. "MINIMIZING EXCITATION LIGHT LEAKAGE AND MAXIMIZING MEASUREMENT SENSITIVITY FOR MOLECULAR IMAGING WITH NEAR-INFRARED FLUORESCENCE." Journal of Innovative Optical Health Sciences 04, no. 03 (2011): 301–7. http://dx.doi.org/10.1142/s1793545811001563.

Full text

Abstract:

Near-infrared fluorescence (NIRF) imaging involves the separation of weak fluorescence signals from backscattered excitation light. The measurement sensitivity of current NIRF imaging systems is limited by the excitation light leakage through rejection filters. In this contribution, the authors demonstrate that the excitation light leakage can be suppressed upon using appropriate filter combination and permutations. The excitation light leakage and measurement sensitivity were assessed and compared in this study by computing the transmission ratios of excitation to emission light collected and

APA, Harvard, Vancouver, ISO, and other styles

11

Su, Pan, JieChang Wu, Guanghui Chang, Shuyong Liu, and Xuejiao Feng. "The Leakage Identification and Location of Ship Pipeline System Based on Vibration Signal Processing." Complexity 2023 (June 22, 2023): 1–16. http://dx.doi.org/10.1155/2023/9646710.

Full text

Abstract:

The leakage of the ship’s pipeline system will bring great risks to the engine equipment and seriously threaten the vitality of the ship. In this paper, the pipeline leakage detection and localization research are carried out based on the vibration signal generated by pipeline leakage. First, the finite element model of the pipeline is constructed to obtain the variation law of the vibration signal when the pipeline leaks are carried out. Second, the vibration signal is processed based on the variational mode decomposition (VMD) and radial basis function (RBF) neural networks. The wavelet pack

APA, Harvard, Vancouver, ISO, and other styles

12

Pavlo, Sydorkin, Nesterenko Sergey, Salnyk Sergey, Konotopets Mykola, Kulynich Oleg, and Smolkov Oleksandr. "Methods and techniques of protecting information from leakage by technical channels via side electromagnetic radiation." Political Science and Security Studies Journal 2, no. 3 (2021): 15–25. https://doi.org/10.5281/zenodo.5534847.

Full text

Abstract:

The rapid development and constant growth of the use of computer equipment, wireless radio access systems, increasing the functionality of electronic means of personal use require a timely response to threats of information leakage through technical channels. This state of affairs has exacerbated the problem of identifying technical channels of information leakage arising from technical progress, and with it the need to ensure the required level of efficiency and cost of the process of searching and identifying technical channels of information leakage. The next important issue is the adequacy

APA, Harvard, Vancouver, ISO, and other styles

13

Mehrish, Ambuj, Vikash Kumar, and Ashish Goswami. "Precoding based on Signal-to-leakage and Noise Ratio to Reduce ICI in MIMO-OFDM Systems." International Journal of Computer Applications 95, no. 19 (2014): 1–4. http://dx.doi.org/10.5120/16699-6831.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Tong, Chengbiao, Yuehong Zhao, and Xinming Xu. "Valve Internal Leakage Signal Enhancement Method Based on the Search and Rescue Team–Coupled Multi-Stable Stochastic Resonance Algorithm." Applied Sciences 15, no. 7 (2025): 3865. https://doi.org/10.3390/app15073865.

Full text

Abstract:

The leakage signal of the hydraulic valve is a weak, nonlinear, and non-periodic signal that is easily overpowered by background noise from the surroundings. To address this issue, the Search and Rescue Team (SaRT) algorithm was introduced to adaptive coupled stochastic resonance, and a new signal-enhancement method based on SaRT for coupled multi-stable stochastic resonance (CMSR) was proposed for enhancing valve-leakage vibration signals. Initially, the method employs the rescaling technique to preprocess the signal, thereby transforming the fault signal into a small-parameter signal. Subseq

APA, Harvard, Vancouver, ISO, and other styles

15

Li, Chun Lan, Song Huai Du, Zhai Shi, and Juan Su. "Study on Detection Method of Electrical Shock Current Based on Sliding Window and Wavelet Transform." Advanced Materials Research 860-863 (December 2013): 2035–39. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2035.

Full text

Abstract:

With the popularization of the rural electricity utilization, the rural electric safety was still an immediate problem to be solved. It was difficult to exactly detect and judge electric shock signals in the summation leakage current on the low-voltage electric power grid. A detection method of electrical contact signals based on sliding window and wavelet multi-resolution method was proposed. Under the different signal-to-noise ratio level, the summation leakage current was reconstructed by wavelet decomposition reconstruction algorithm. According to the characteristic of the slow change of t

APA, Harvard, Vancouver, ISO, and other styles

16

Lu, Jingyi, Xue Qu, Dongmei Wang, Jikang Yue, Lijuan Zhu, and Gongfa Li. "Signal filtering method of variational mode decomposition and Euclidean distance based on optimizing parameters of classification particle swarm optimization algorithm." Transactions of the Institute of Measurement and Control 43, no. 9 (2021): 2018–29. http://dx.doi.org/10.1177/0142331221989003.

Full text

Abstract:

In order to deal with the problem that the noise of leakage signals from natural gas pipelines has a great influence on the feature extraction of pipeline leakage, this paper proposes a signal denoising method of variational mode decomposition (VMD) and Euclidean distance (ED) based on optimizing parameters of classification particle swarm optimization (CPSO) algorithm. First, CPSO algorithm is used to optimize parameters K and [Formula: see text] of VMD, adaptively. The sum of the ratio of the mean and variance of the cross-correlation coefficient and the ratio of the mean and variance of kur

APA, Harvard, Vancouver, ISO, and other styles

17

Yang, Lingxia, Shuxun Li, Zhihui Wang, Jianjun Hou, and Xuedong Zhang. "Research on Signal Feature Extraction of Natural Gas Pipeline Ball Valve Based on the NWTD-WP Algorithm." Sensors 23, no. 10 (2023): 4790. http://dx.doi.org/10.3390/s23104790.

Full text

Abstract:

The measured signals of internal leakage detection of the large-diameter pipeline ball valve in natural gas pipeline systems usually contain background noise, which will affect the accuracy of internal leakage detection and sound localization of internal leakage points due to the interference of noise. Aiming at this problem, this paper proposes an NWTD-WP feature extraction algorithm by combining the wavelet packet (WP) algorithm and the improved two-parameter threshold quantization function. The results show that the WP algorithm has a good feature extraction effect on the valve leakage sign

APA, Harvard, Vancouver, ISO, and other styles

18

Jie, Tian, Wang Hongyao, Meng Guoying, Sven Bilen, and Wu Xinli. "Novel method of data compression for the online detection signal of coal mine wire rope." Insight - Non-Destructive Testing and Condition Monitoring 62, no. 10 (2020): 600–608. http://dx.doi.org/10.1784/insi.2020.62.10.600.

Full text

Abstract:

Coal mine wire rope detection is related to personnel and production safety. With the Chinese coal mining trend tending towards deep mining, a considerable amount of data is critical for the online detection of deep well lifting wire rope. To improve the sampling rate, decrease the analysis processing time and realise real-time online detection, this paper proposes an online detection data compression processing method. The study focuses on the distortion compression method for the online detection signal of deep well hoisting wire rope. The set partitioning in hierarchical trees (SPIHT) algor

APA, Harvard, Vancouver, ISO, and other styles

19

Сунцов, Андрей Евгениевич, and Сергей Александрович Коршунов. "Phase decomposition method in solving problems of pipeline integrity monitoring." SCIENCE & TECHNOLOGIES OIL AND OIL PRODUCTS PIPELINE TRANSPORTATION 13, no. 3 (2023): 236–41. http://dx.doi.org/10.28999/2541-9595-2023-13-3-236-241.

Full text

Abstract:

Рассматривается проблема идентификации сигналов утечек малой интенсивности (менее 5 м3/ч). Энергия таких сигналов в стационарном режиме работы магистрального трубопровода может быть в несколько раз меньше энергии шума. Соответственно, анализ сигналов утечек малой интенсивности требует применения специальных методов подавления шума и выделения полезного сигнала (повышения соотношения сигнал/шум). При исследованиях событий на защищаемом участке трубы решается задача выделения сигналов утечки, идущих изнутри участка. Для этой цели предложен метод фазовой декомпозиции, который позволяет отделить с

APA, Harvard, Vancouver, ISO, and other styles

20

Wu, Xuan Li, Ming Xin Luo, Lun Kuan Sun, and Nan Nan Fu. "Signal to Leakage and Noise Ratio Based Beamforming and User Scheduling for TD-LTE-A Systems." Advanced Materials Research 760-762 (September 2013): 551–55. http://dx.doi.org/10.4028/www.scientific.net/amr.760-762.551.

Full text

Abstract:

In TD-LTE-A downlink, signal to leakage and noise ratio (SLNR) based beamforming can eliminate the co-channel interference and noise for multi-user MIMO mode effectively and can be realized more easily than the traditional ideal SINR based algorithms. Moreover, user scheduling can be combined with the SLNR based beamforming algorithm to obtain a better performance. Hence, in this paper, SLNR based beamforming is firstly compared with traditional beamforming algorithms, and then, a suboptimal maximum minimum SLNR (MMSLNR) scheduling strategy is proposed to improve the average BER performance an

APA, Harvard, Vancouver, ISO, and other styles

21

Saeid, Elsadig, Varun Jeoti, and Brahim Belhaouari Samir. "Per-antenna signal to leakage noise ratio precoding for MU-MIMO-OFDM system with reduced feedback." International Journal of Information and Communication Technology 10, no. 2 (2017): 206. http://dx.doi.org/10.1504/ijict.2017.082080.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Samir, Brahim Belhaouari, Elsadig Saeid, and Varun Jeoti. "Per-antenna signal to leakage noise ratio precoding for MU-MIMO-OFDM system with reduced feedback." International Journal of Information and Communication Technology 10, no. 2 (2017): 206. http://dx.doi.org/10.1504/ijict.2017.10002123.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Zhang, Hang, Zhiye Du, and Yazhi Liu. "Application of magnetic flux leakage method in the crimping inspection of carbon fiber conductor." Journal of Physics: Conference Series 2728, no. 1 (2024): 012037. http://dx.doi.org/10.1088/1742-6596/2728/1/012037.

Full text

Abstract:

Abstract Compared with steel core aluminum strand wire, carbon fiber composite core wire has many excellent characteristics such as large flow capacity, good heat resistance, light weight, but its mechanical properties are poor, and the unqualified crimping quality is easy to lead to wire breakage accidents, which greatly affects its popularization. For this reason, a scheme for the detection of crimping defects of carbon fiber composite mandrel based on magnetic leakage method is proposed. Firstly, the finite element analysis model of the clamping fixture was established, and then the magneti

APA, Harvard, Vancouver, ISO, and other styles

24

Lin, K. C., C. H. Ko, M. J. Twu, P. C. Juan, H. Sekiguchi, and C. H. Chou. "Optimization of BiFeO₃MFIS Capacitors Doped Niobium by Using Taguchi Method." Applied Mechanics and Materials 481 (December 2013): 141–45. http://dx.doi.org/10.4028/www.scientific.net/amm.481.141.

Full text

Abstract:

In this study,MFIS (Metal/Ferroelectric/Insulator/Semiconductor) capacitors whose structure is Al/BFO+Nb/HfO2/p-Si are investigatedby using Taguchi Method. The effects of leakage current, memory window, and signal-to-noise ratio (S/N ratio) are discussed by different process conditions. As a result, the leakage current and memory window indicate the better performance on th same process condition. The better conditions of this MFIS capacitoroccur in rapid thermal annealing (RTA) at 700°C, 5W direct current (DC) power of Nb sputtering and 15 of argon-to-oxygen ratio for laekage current and memo

APA, Harvard, Vancouver, ISO, and other styles

25

Han, Xiao Gang, Mei Quan Liu, and Qin Lei Sun. "The Design and Implementation of Adaptive Noise Cancellation for Magnetic Flux Leakage Test Signal." Applied Mechanics and Materials 441 (December 2013): 393–96. http://dx.doi.org/10.4028/www.scientific.net/amm.441.393.

Full text

Abstract:

In the application of magnetic flux leakage (MFL) nondestructive testing, the signal will be disturbed by varying noises. It seriously affects the accuracy of detection judgment result. This paper describes the design of least mean square (LMS) noise cancellation for MFL signal and the implementation based on ARM platform. Two giant magnetoresistive sensors are used to measure the signal, one sensor for MFL signal (with noise) and the other one for the noise signal. They are inputted to the noise cancellation to obtain pure MFL signals. Experimental results show that the LMS noise cancellation

APA, Harvard, Vancouver, ISO, and other styles

26

Tian, Jing, and Shao Qian Wang. "Design and Realization of the Kalman Filter Based on LabVIEW." Applied Mechanics and Materials 519-520 (February 2014): 1276–80. http://dx.doi.org/10.4028/www.scientific.net/amm.519-520.1276.

Full text

Abstract:

In pipeline leak detection, collected fault signal will inevitably influenced by all kinds of industrial noise, sometimes even the useful signals submerged by the noise, so before data analysis, we shall be carried out in a first filtering processing. According to the theory of virtual instrument, this paper design the Kalman filter in the LabVIEW program module, and the pressure signal the of the test simulation system is collected real-time filtering, to eliminate noise interference and improve signal-to-noise ratio. It also use the signal after being filtered to give an alarm and location o

APA, Harvard, Vancouver, ISO, and other styles

27

Liu, Mingxin, Wei Xue, Peisong Jia, Sergey B. Makarov, and Beiming Li. "Research on Spectrum Optimization Technology for a Wireless Communication System." Symmetry 12, no. 1 (2019): 34. http://dx.doi.org/10.3390/sym12010034.

Full text

Abstract:

In this study, the principle of minimum spectral energy leakage is applied, and the mathematical model is also established by the general function through adding different constraints. To allow the target baseband signal to have a high-quality time-domain representation, it is assumed that the baseband signal is an even function. The time-domain waveform has symmetry about the y-axis, and the objective function is obtained by Fourier series approximation. The frequency-domain characteristics of the baseband signals are obtained by adding the energy limitation condition and the boundary restric

APA, Harvard, Vancouver, ISO, and other styles

28

Ding, Wen Jie. "Practice and Analysis of Life Measuring Device for Motor Valve." Applied Mechanics and Materials 423-426 (September 2013): 1972–77. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.1972.

Full text

Abstract:

Motor valve leakage is not easy to detect during using, so it must carry out quality inspection before assembly into gas meter. The quality appraisement of valve mainly relies on switch times before leakage, and pressure difference measurement is better method for leakage judgment. The static pressure leak detection method, reference gas chamber and control program of solenoid valve are key technologies in pressure difference measurement and life measurement. The new type device is designed with hardware and software, such as gas path and pipes, sensor, the solenoid valves of dynamic structure

APA, Harvard, Vancouver, ISO, and other styles

29

Yang, Fuhe, Xingquan Shen, and Zhijian Wang. "Multi-Fault Diagnosis of Gearbox Based on Improved Multipoint Optimal Minimum Entropy Deconvolution." Entropy 20, no. 8 (2018): 611. http://dx.doi.org/10.3390/e20080611.

Full text

Abstract:

Under complicated conditions, the extraction of a multi-fault in gearboxes is difficult to achieve. Due to improper selection of methods, leakage diagnosis or misdiagnosis will usually occur. Ensemble Empirical Mode Decomposition (EEMD) often causes energy leakage due to improper selection of white noise during signal decomposition. Considering that only a single fault cycle can be extracted when MOMED (Multipoint Optimal Minimum Entropy Deconvolution) is used, it is necessary to perform the sub-band processing of the compound fault signal. This paper presents an adaptive gearbox multi-fault-f

APA, Harvard, Vancouver, ISO, and other styles

30

Su, Chen, Shoufeng Tong, Peng Lin, Naiyuan Liang, Zejie He, and Xiaonan Yu. "Research on Spectral Leakage Suppression Method of Coherent Wind Lidar Based on Hanning Self-Convolutional Window." Applied Sciences 15, no. 9 (2025): 4709. https://doi.org/10.3390/app15094709.

Full text

Abstract:

Pulsed Coherent Doppler Wind Lidar (CDWL) usually utilizes a fixed-length range gate to divide the time domain of the echo signal, which can lead to the incomplete sampling of echo signals, resulting in a spectral leakage phenomenon and affecting the wind speed inversion accuracy. In this paper, we propose to utilize the Hanning Self-Convolutional Window (HSCW) to preprocess the wind speed echo signal, suppress the spectral leakage phenomenon, and improve the wind speed inversion accuracy of the algorithm. Simulation experiments show that the signal-to-noise ratio (SNR) is 3.28 dB higher than

APA, Harvard, Vancouver, ISO, and other styles

31

Chen, Xin, Zhu Jiang, Jiale Li, Zhendong Zhao, and Yunyun Cao. "Research on Signal Noise Reduction and Leakage Localization in Urban Water Supply Pipelines Based on Northern Goshawk Optimization." Sensors 24, no. 18 (2024): 6091. http://dx.doi.org/10.3390/s24186091.

Full text

Abstract:

In order to enhance the accuracy and adaptability of urban water supply pipeline leak localization, based on the Northern Goshawk Optimization, a novel joint denoising method is proposed in this paper to reduce noise in negative pressure wave signals caused by leaks. Firstly, the Northern Goshawk Optimization optimizes the decomposition levels and penalty factors of Variational Mode Decomposition, and obtains their optimal combination. Subsequently, the optimized parameters are used to decompose the pressure signals into modal components, and the effective components and noise components are d

APA, Harvard, Vancouver, ISO, and other styles

32

Li, Shuxun, Qian Zhao, Jinwei Liu, Xuedong Zhang, and Jianjun Hou. "Noise Reduction of Steam Trap Based on SSA-VMD Improved Wavelet Threshold Function." Sensors 25, no. 5 (2025): 1573. https://doi.org/10.3390/s25051573.

Full text

Abstract:

The performance of steam traps plays an important role in the normal operation of steam systems. It also contributes to the improvement of thermal efficiency of steam-using equipment and the rational use of energy. As an important component of the steam system, it is crucial to monitor the state of the steam trap and establish a correlation between the acoustic emission signal and the internal leakage state. However, in actual test environments, the acoustic emission sensor often collects various background noises alongside the valve internal leakage acoustic emission signal. Therefore, to min

APA, Harvard, Vancouver, ISO, and other styles

33

Tian, Jie, Wei Wang, Hongyao Wang, Qiang Bai, Zeyang Zhou, and Pengbo Li. "Enhancing Wire-Rope Damage Signals Based on a Radial Magnetic Concentrator Bridge Circuit." Sensors 22, no. 10 (2022): 3654. http://dx.doi.org/10.3390/s22103654.

Full text

Abstract:

Hall-effect sensors are used for the non-destructive testing of wire ropes owing to their low power consumption and high operation frequency. The high-speed operation of wire ropes causes vibration inclination at different frequencies, which makes it difficult to detect the ropes. Considering that the radial signal in the magnetic flux leakage (MFL) detection method can respond to damages to the maximum extent possible, this study proposes a radial magnetic concentrator suitable for the non-destructive testing of wire ropes based on theoretical analysis and transient magnetic field simulations

APA, Harvard, Vancouver, ISO, and other styles

34

Mu, Shengqiang, Liang Huang, Liying Ren, Guoxu Shu, and Xueliang Li. "Anti-Aliasing and Anti-Leakage Frequency–Wavenumber Filtering Method for Linear Noise Suppression in Irregular Coarse Seismic Data." Minerals 15, no. 2 (2025): 107. https://doi.org/10.3390/min15020107.

Full text

Abstract:

Linear noise, a significant type of interference in exploration seismic data, adversely affects the signal-to-noise ratio (SNR) and imaging resolution. As seismic exploration advances, the constraints of the acquisition environment hinder the ability to acquire seismic data in a regular and dense manner, complicating the suppression of linear noise. To address this challenge, we have developed an anti-aliasing and anti-leakage frequency–wavenumber (f-k) filtering method. This approach effectively mitigates issues of spatial aliasing and spectral leakage caused by irregular coarse data acquisit

APA, Harvard, Vancouver, ISO, and other styles

35

Wang, Qing Xuan, and Ai Hua Dong. "The Ultrasonic Signal De-Noising Method Based on an Improved Wavelet Threshold Function." Advanced Materials Research 230-232 (May 2011): 564–68. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.564.

Full text

Abstract:

Making use of the advantages of the soft and hard threshold methods proposed by Donoho, this paper presents a deviation variable based on quadratic polynomial and differentiable improvement function, according to the characteristics of the underground water pipe leakage signal. In the paper we constructed the mathematical model of the function, utilized wavelet de-noising algorithm for the collected ultrasonic signal de-noising, compared the de-noising effect by means of the value of Signal to Noise Ratio (SNR) and Mean Squared Error (MSE). Results show that the new function has the better de-

APA, Harvard, Vancouver, ISO, and other styles

36

Hur, Seop, Seung Hwan Seong, Seong O. Kim, and Sang J. Lee. "Fault Detection Using Acoustic Methods for the Sodium-Water Reaction Monitoring in a Liquid Metal Reactor." Key Engineering Materials 321-323 (October 2006): 455–59. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.455.

Full text

Abstract:

This study was aimed at developing a new method for detecting the sodium-water reaction as a result of a water leakage into the liquid sodium boundary for the liquid metal reactor. In the case of a passive acoustic method, to develop the leak detection algorithm, several signal processing methods have been evaluated. When the acoustic emission signal has a relatively high signal-to-noise ratio for the acoustic noises the spectral estimation method could be used to detect the sodium water reaction. In the case of a low signal-to-noise ratio within -5 dB to -15 dB, the system modeling and the id

APA, Harvard, Vancouver, ISO, and other styles

37

Fujino, Takuro, Satoru Takakura, Shahed Shayan Arani, et al. "A Measurement of Atmospheric Circular Polarization with POLARBEAR." Astrophysical Journal 981, no. 1 (2025): 15. https://doi.org/10.3847/1538-4357/ada89b.

Full text

Abstract:

Abstract At millimeter wavelengths, the atmospheric emission is circularly polarized owing to the Zeeman splitting of molecular oxygen by the Earth's magnetic field. We report a measurement of the signal in the 150 GHz band using 3 yr of observational data with the Polarbear project. Nonidealities of a continuously rotating half-wave plate (HWP) partially convert circularly polarized light to linearly polarized light. While Polarbear detectors are sensitive to linear polarization, this effect makes them sensitive to circular polarization. Although this was not the intended use, we utilized thi

APA, Harvard, Vancouver, ISO, and other styles

38

Lu, Zukun, Jie Song, Long Huang, Chao Ren, Zhibin Xiao, and Baiyu Li. "Distortionless 1/2 Overlap Windowing in Frequency Domain Anti-Jamming of Satellite Navigation Receivers." Remote Sensing 14, no. 8 (2022): 1801. http://dx.doi.org/10.3390/rs14081801.

Full text

Abstract:

Frequency-domain anti-jamming technology is a common anti-jamming method for satellite navigation receivers. 1/2 overlapping windowing can effectively solve the spectrum leakage in the frequency domain conversion process, but the traditional window function will cause the loss of signal energy. This paper proposes a window function design method with no loss of signal energy, which can effectively solve the signal energy loss caused by the window function. The feasibility of the proposed method is theoretically deduced, and the effectiveness of the proposed method is verified by simulation and

APA, Harvard, Vancouver, ISO, and other styles

39

Miao, Peng Chao, and Zhi Niu Xu. "Effects of Different Sample Resistances on the Insulator Leakage Current Acquisition Results." Applied Mechanics and Materials 644-650 (September 2014): 3468–71. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.3468.

Full text

Abstract:

The sampling resistor method is commonly used in the laboratory to measure the insulator leakage current. To study the effects of different resistance on the leakage current acquisition results, a series of experiments are systematically conducted in laboratory. Leakage current waveforms of a clean porcelain insulator under 9 kV and 27 kV power frequency voltages are acquired respectively through the oscilloscope with sampling resistance of 5 Ω, 10 Ω, 100 Ω, 1 kΩ and 17 kΩ. The results reveal that: rated voltage been applied, weak discharge exits on the surface of the porcelain insulator which

APA, Harvard, Vancouver, ISO, and other styles

40

Goyal, Candy, Jagpal Singh Ubhi, and Balwinder Raj. "A Reliable Leakage Reduction Technique for Approximate Full Adder with Reduced Ground Bounce Noise." Mathematical Problems in Engineering 2018 (December 16, 2018): 1–16. http://dx.doi.org/10.1155/2018/3501041.

Full text

Abstract:

In this paper, an effective and reliable sleep circuit is proposed, which not only reduces leakage power but also shows significant reduction in ground bounce noise (GBN) in approximate full adder (FA) circuits. Four 1-bit approximate FA circuits are modified using proposed sleep circuit which uses one NMOS and one PMOS transistor. The design metrics such as average power, delay, power delay product (PDP), leakage power, and GBN are compared with nine other 1-bit FA circuits reported till date. All the comparisons are done using post-layout netlist at 45nm technology. The modified designs achi

APA, Harvard, Vancouver, ISO, and other styles

41

Lu, Kaijie, Wei Chen, and Haodong Tang. "P‐11.10: Decoding Non‐Ohmic Leakage Mechanisms in Dark Current Analysis of PbS Quantum Dot Photodiodes." SID Symposium Digest of Technical Papers 56, S1 (2025): 1501–2. https://doi.org/10.1002/sdtp.19127.

Full text

Abstract:

PbS quantum dots (QD) are promising for photodetection, solar cells, and light‐emitting devices, but their performance is limited by dark current, which degrades the switching ratio and signal‐to‐noise ratio, especially in low‐light and high‐sensitivity applications. This study explores non‐Ohmic leakage mechanisms and the relationship between the power factor m in the space charge limited current (SCLC) model and trap state distribution in the voltage range of −0.5 to 0.3V. By analyzing current‐voltage (I‐V) characteristics under varying voltages and temperatures, we show that m correlates wi

APA, Harvard, Vancouver, ISO, and other styles

42

Guo, Li Rong, Ming Hao He, Chun Lai Yu, and Bing Qie Wang. "A New Method of Time Domain Coherency for Radar Emitter Signal Sorting." Advanced Materials Research 981 (July 2014): 386–91. http://dx.doi.org/10.4028/www.scientific.net/amr.981.386.

Full text

Abstract:

£o Based on judging the change of pulse amplitude of phase detecting, a new method of time domain coherency for the radar emitter sorting is proposed in this paper. We analyzed the theory of the signal coherency recognition method. Then, the mathematic derivation process and specific recognition steps of the new method are detailedly given. But above all, the new method can be applied into the signal sorting of radar emitter. Simulation results also reveal that this new method can effectively sort the radar emitter signals under the low signal-to-noise ratio, and it is a huge help to solve the

APA, Harvard, Vancouver, ISO, and other styles

43

Liu, Fu Jun, Zhang Wei Ling, Shuai Kong, and Mu Lin Zheng. "Application of Zero-Phase Digital Filter in Magnetic Flux Leakage Testing for Tank Floor Inspection." Applied Mechanics and Materials 333-335 (July 2013): 1644–48. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.1644.

Full text

Abstract:

Magnetic flux leakage (MFL) testing, as a modern nondestructive testing technology, has significant application in tank floor corrosion defect inspection. In view of signal characteristics in the MFL testing of tank floor, an improved signal progressing method combining software and hardware was presented. Especially, in order to avoid phase distortion caused by applying common digital filter, zero-phase digital filter which could effectively eliminate the phase distortion was proposed to improve the location accuracy of defect. Experiment results showed that the signal progressing method coul

APA, Harvard, Vancouver, ISO, and other styles

44

Song, Qiang. "Effects of Magnetic Concentrator on MFL Signals Using FEA." Advanced Materials Research 204-210 (February 2011): 1956–59. http://dx.doi.org/10.4028/www.scientific.net/amr.204-210.1956.

Full text

Abstract:

Magnetic flux leakage (MFL) is a non-destructive testing method used to inspect ferrous materials. However, there are a variety of factors that can affect the MFL inspection tool’s ability to detect and characterize anomalies. MFL signals obtained during the inspection of pipes have been simulated using 3D finite element analysis (FEA) and the effects of magnetic concentrator on MFL signals are investigated. Measurements of the leakage flux with various defect depths or widths indicate that the axial component of MFL are improved by magnetic concentrator with the result that significant advant

APA, Harvard, Vancouver, ISO, and other styles

45

Jia, Yinliang, Jing Lin, Ping Wang, and Yue Zhu. "An Improved Empirical Wavelet Transform Filtering Method for Rail-Head Surface-Defect Magnetic-Flux Leakage Signal." Applied Sciences 14, no. 2 (2024): 526. http://dx.doi.org/10.3390/app14020526.

Full text

Abstract:

The rail is an important factor in railway traffic safety. Surface defects in the rail head comprise a common type of rail damage, and magnetic flux leakage (MFL) technology is applied for its detection. MFL detection is influenced by various factors, resulting in high noise and a low signal-to-noise ratio (SNR) in the collected MFL signal, which influence defect assessment. This article improves the empirical wavelet transform (EWT) to apply it to rail surface-defect MFL signal filtering. A boundary optimization method based on mutual information (MI) is proposed to reduce the boundary redund

APA, Harvard, Vancouver, ISO, and other styles

46

Zuo, Jianyong, Jingxian Ding, and Furen Feng. "Latent Leakage Fault Identification and Diagnosis Based on Multi-Source Information Fusion Method for Key Pneumatic Units in Chinese Standard Electric Multiple Units (EMU) Braking System." Applied Sciences 9, no. 2 (2019): 300. http://dx.doi.org/10.3390/app9020300.

Full text

Abstract:

To identify and diagnose the latent leakage faults of key pneumatic units in the Chinese standard Electric Multiple Units (EMU) braking system, a multi-source information fusion method based on Kalman filtering, sequential probability ratio test (SPRT), and support vector machine (SVM) is proposed. The relay valve is taken as an example for research. Firstly, Kalman's state estimation function is used to obtain the innovation sequence, and the innovation sequence is input into the SPRT model to help recognize latent leakage faults of the relay valve. Using this method, the problem of the incom

APA, Harvard, Vancouver, ISO, and other styles

47

Liu, Jing, Shoubao Su, Haifeng Guo, Yuhua Lu, and Yuexia Chen. "A Signal Filtering Method for Magnetic Flux Leakage Detection of Rail Surface Defects Based on Minimum Entropy Deconvolution." International Journal of Swarm Intelligence Research 15, no. 1 (2023): 1–11. http://dx.doi.org/10.4018/ijsir.332791.

Full text

Abstract:

Magnetic flux leakage (MFL) detection of rail surface defects is an important research field for railway traffic safety. Due to factors such as magnetization and material, it can generate background noise and reduce detection accuracy. To improve the detection signal strength and enhance the detection rate of more minor defects, a signal filtering method based on minimum entropy deconvolution is proposed to denoise. By using the objective function method, the optimal inverse filter parameters are calculated, which are applied to the filtering detection of MFL signals of the rail surface. The d

APA, Harvard, Vancouver, ISO, and other styles

48

Kim, Myungsup, and Do Young Kwak. "Multiple frequencies multiple carriers." MATEC Web of Conferences 189 (2018): 04004. http://dx.doi.org/10.1051/matecconf/201818904004.

Full text

Abstract:

The OFDM scheme has the problems of out-of-band (OOB) leakage and low transmission efficiency in the time domain. This is because the scheme is a single frequency single carrier one in which one carrier is generated by one frequency. To overcome the problems we propose multiple frequencies multiple carriers (MFMC) scheme in which one carrier is generated using many frequencies. We establish a practical model which not only eliminates these disadvantages but also improves the transmission efficiency and peak-to-average power ratio (PAPR) performance. In the proposed MFMC scheme, the filter matr

APA, Harvard, Vancouver, ISO, and other styles

49

Hong, Tao, Cong Liu, and Michel Kadoch. "Machine Learning Based Antenna Design for Physical Layer Security in Ambient Backscatter Communications." Wireless Communications and Mobile Computing 2019 (January 1, 2019): 1–10. http://dx.doi.org/10.1155/2019/4870656.

Full text

Abstract:

Ambient backscatter employs existing radio frequency (RF) signals in the environment to support sustainable and independent communications, thereby providing a new set of applications that promote the Internet of Things (IoT). However, nondirectional forms of communication are prone to information leakage. In order to ensure the security of the IoT communication system, in this paper, we propose a machine learning based antenna design scheme, which achieves directional communication from the relay tag to the receiving reader by combining patch antenna with log-periodic dual-dipole antenna (LPD

APA, Harvard, Vancouver, ISO, and other styles

50

Liu, Mengqi, Chi Zhang, Xiaoyuan Jiang, et al. "The Research of 30 mm Detecting Distance of Testing Device for Wire Rope Based on Open Magnetizer." Applied Sciences 12, no. 10 (2022): 4829. http://dx.doi.org/10.3390/app12104829.

Full text

Abstract:

Wire rope will have defects such as local faults (LF) and loss of metal area (LMA) during the long-term using process. The nondestructive testing method of magnetic flux leakage (MFL) has been widely used in wire rope defect detection. Currently, the detecting distance between magnetic sensors and wire rope with the MFL method is relatively small (2–5 mm). Considering the inner surface of the sensor head is close to the wire rope, it quickly leads to the sensor head scraping off the surface oil of the wire rope or being stuck by a cut wire in the course of MFL detection. Therefore, it is chall

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!