Results 1 to 10 of about 139,045 (195)

Harmonic Phasor Estimation Method Considering Dense Interharmonic Interference

Entropy, 2023
Due to the limitation of frequency resolution and the spectrum leakage caused by signal windowing, the spectrums of harmonic and interharmonic components with close frequencies overlap each other. When the dense interharmonic (DI) components are close to
Xianyong Xiao, Runze Zhou, Xiaoyang Ma, Rui Xu   +3 more
doaj   +3 more sources

An Optimization of Least-Square Harmonic Phasor Estimators in Presence of Multi-Interference and Harmonic Frequency Variance

Energies, 2023
The wide application of power electronic devices brings an increasing amount of undesired harmonic and interharmonic tones, and accurate harmonic phasor estimation under a complex signal input is an important task for smart grid applications.
Dongfang Zhao, Fuping Wang, Shisong Li, Wei Zhao, Lei Chen, Songling Huang, Shen Wang, Haitao Li   +7 more
doaj   +1 more source

One-Step Discrete Fourier Transform-Based Sinusoid Frequency Estimation under Full-Bandwidth Quasi-Harmonic Interference

Acoustics, 2023
The estimation of the frequency of sinusoids has been the object of intense research for more than 40 years. Its importance in classical fields such as telecommunications, instrumentation, and medicine has been extended to numerous specific signal ...
João Miguel Silva, Marco António Oliveira, André Ferraz Saraiva, Aníbal J. S. Ferreira   +3 more
doaj   +1 more source

Second-Harmonic Young’s Interference in Atom-Thin Heterocrystals [PDF]

Nano Letters, 2020
13 pages, 3 ...
Wontaek Kim, Je Yhoung Ahn, Juseung Oh, Ji Hoon Shim, Sunmin Ryu   +4 more
openaire   +4 more sources

Optimal reception of multiple phase shift keying and quadrature amplitude modulation signals with non-coherent processing of harmonic interference

Российский технологический журнал, 2023
Objectives. Analysis of the reception noise immunity of multiple phase shift keying (M-PSK) and quadrature amplitude modulation (M-QAM) signals has demonstrated a significant reduction in the quality of reception of discrete information due to the ...
G. V. Kulikov, T. T. Do, A. A. Lelyukh, V. D. Nguyen   +3 more
doaj   +1 more source

Optimal nonlinear filtering of M-PSK signals against a background of harmonic interference with a random initial phase

Российский технологический журнал, 2021
Objectives. The widespread use of radio data transmission systems using signals with multiposition phase shift keying (MPSK) is due to their high noise immunity and the simplicity of constructing the transmitting and receiving parts of the equipment. The
G. V. Kulikov, Trung Tien Do, E. V. Samokhina   +2 more
doaj   +1 more source

Quantum Path Interferences in High-Order Harmonic Generation [PDF]

Physical Review Letters, 2008
We have investigated the intensity dependence of high-order harmonic generation in argon when the two shortest quantum paths contribute to the harmonic emission. For the first time to our knowledge, experimental conditions were found to clearly observe interference between these two quantum paths that are in excellent agreement with theoretical ...
Zair, A, Holler, M, Guandalini, A, Schapper, F, Biegert, J, Gallmann, L, Keller, U, Wyatt, A, Monmayrant, A, Walmsley, I, Cormier, E, Auguste, T, Caumes, J, Salieres, P   +13 more
openaire   +3 more sources

Electromagnetic interference assessment of a train–network–pipeline coupling system based on a harmonic transmission model

Railway Engineering Science, 2023
The harmonics and resonance of traction power supply systems (TPSSs) aggravate the electromagnetic interference (EMI) to adjacent metallic pipelines (MPs), which has aroused widespread concern. In this paper, an evaluation method on pipeline interference
Minwu Chen, Jinyu Zhao, Zongyou Liang, Xin Gong, Yu Cao   +4 more
doaj   +1 more source

Use of a spatially distributed in-phase antenna to increase the noise immunity of signal reception

Российский технологический журнал, 2023
Objectives. Radio-technical information transmission systems are widely used in various sectors of our life, not only for telecommunications and associated domestic needs, but also for the functioning of various special services, such as emergency ...
G. V. Kulikov, Yu. A. Polevoda, M. S. Kostin   +2 more
doaj   +1 more source

An Advanced Frequency Estimation Algorithm Based on Analytic Compensation of Effects of Dominant Harmonic in Power Systems

IEEE Access, 2021
This paper proposes an advanced frequency estimation algorithm, where the interference effect of harmonic is effectively compensated by proposing and using a new ‘harmonics interference decomposition model’.
Kyou Jung Son, Gi Sung An, Kyung Deok Nam, Tae Gyu Chang   +3 more
doaj   +1 more source