Results 21 to 30 of about 16,511 (214)

Identification of Mode Shapes Based on Ambient Signals and the IA-VMD Method

open access: yesApplied Sciences, 2021
The paper presents a multiaspect analysis of multivalues and the broadband nature of system oscillation. By analyzing the ambient signal caused by random small disturbances during the normal operation of interconnected power grids, many system operation ...
Fang Liu   +5 more
doaj   +1 more source

Design of Near Perfect Reconstruction Oversampled Filter Banks for Subband Adaptive Filters [PDF]

open access: yes, 1999
In this brief, a design algorithm for real-valued and complex-valued oversampled filter banks which yield a low level of inband alias and enable simple subband adaptiv structures is presented.
Weiss, Stephan   +4 more
core   +1 more source

Parallel Frequency Function-Deep Neural Network for Efficient Approximation of Complex Broadband Signals

open access: yesSensors, 2022
In recent years, with the growing popularity of complex signal approximation via deep neural networks, people have begun to pay close attention to the spectral bias of neural networks—a problem that occurs when a neural network is used to fit broadband ...
Zhi Zeng   +3 more
doaj   +1 more source

Matched filter processing to improve measuring accuracy of interferometric fringe analysis using a multi-pulse train interferometer

open access: yesResults in Optics, 2023
We propose a novel approach to address the problem of measurement accuracy in analyzing the distance between the peak positions of interference envelopes in multi-pulse train (MPT) interferometry.
Dong Wei, Taketo Miura
doaj   +1 more source

Bandpass filter with stepped impedance subharmonic stubs [PDF]

open access: yes, 2014
Structures with shunt stubs in a subharmonic ratio that realize bandpass performance have limited application due to the inherent problem of fixed transmission zero positions in the stopband.
Malherbe, J.A.G., 1940-   +1 more
core   +1 more source

Phase Estimation of Single Tones Next to Modulated Signals in the Medium Frequency R-Mode System

open access: yesIEEE Access, 2022
Position, navigation, and timing information are critical to today’s infrastructures; as a result, the possibility of estimating ranges is being explored in more and more radio systems. One way to achieve this is to extend the modulation with time-
Lars Grundhofer   +3 more
doaj   +1 more source

Bragg crystal monochromators

open access: yesMajor Reference Works, Page 290-301., 2021
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.

Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
John P. Sutter C. Chantler   +2 more
wiley  

+1 more source

Scattering of Electromagnetic Waves by Frequency-Detuned Systems of Dielectric Resonators

open access: yesVìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ
The general problem of scattering on a system of frequency-detuned coupled Dielectric Resonators (DRs) located in one or several transmission lines is considered.
O. O. Trubin
doaj   +1 more source

Adaptive Operator-Based Spectral Deconvolution With the Levenberg-Marquardt Algorithm

open access: yesPhotonic Sensors, 2019
Spectral distortion often occurs in spectral data due to the influence of the bandpass function of the spectrometer. Spectral deconvolution is an effective restoration method to solve this problem. Based on the theory of the maximum posteriori estimation,
Chan Huang   +5 more
doaj   +1 more source

Precise Positioning Method for Insulator Sheds Based on Depth Horizontal Histogram

open access: yesIEEE Access, 2022
The insulator cleaning robot is essential to grid maintenance and personal safety, where the precise positioning of insulator sheds is the basis.
Jinbin Li   +5 more
doaj   +1 more source

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