Zobrazeno 1 - 10
of 298
pro vyhledávání: '"Time-dispersion"'
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 1 (2024)
Abstract Mobile radio channel and its effects on the radio link path place fundamental limitations on the performance of wireless communication systems. This paper sets out a new approach for wideband modeling of mobile radio channels to classify dis
Externí odkaz:
https://doaj.org/article/2e4f4647392146a5b6849dd60b145cab
Publikováno v:
Applied Sciences, Vol 14, Iss 19, p 8725 (2024)
We propose an accurate method for modeling acoustic wave propagation. The spatial derivatives are calculated using Fourier transform to reduce spatial numerical dispersion. The standard staggered grid is adopted to suppress the non-causal ringing art
Externí odkaz:
https://doaj.org/article/8f4ba6fb865b44a889d75be6e4b8536c
Akademický článek
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Publikováno v:
Remote Sensing, Vol 15, Iss 12, p 3120 (2023)
The finite-difference (FD) method is one of the most commonly used numerical methods for elastic wave modeling. However, due to the difference approximation of the derivative, the time dispersion phenomenon cannot be avoided. This paper proposes the
Externí odkaz:
https://doaj.org/article/2af1e19942424e28b60980cce24d8858
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
The maximum time step size for the explicit finite-difference scheme complies with the Courant–Friedrichs–Lewy (CFL) stability condition, which essentially restricts the optimization and tuning of the communication-intensive massive seismic wave
Externí odkaz:
https://doaj.org/article/14e9d91d2aef4b3ebfe84baae15b1c6e
Autor:
Ádrya Vanessa Lira Costa, Thiago Francisco de Carvalho Oliveira, Douglas Antônio Posso, Gabriela Niemeyer Reissig, André Geremia Parise, Willian Silva Barros, Gustavo Maia Souza
Publikováno v:
Plants, Vol 12, Iss 4, p 924 (2023)
To survive in a dynamic environment growing fixed to the ground, plants have developed mechanisms for monitoring and perceiving the environment. When a stimulus is perceived, a series of signals are induced and can propagate away from the stimulated
Externí odkaz:
https://doaj.org/article/736f95462ec04243b82fe754a6488d3a
Publikováno v:
Energies, Vol 15, Iss 20, p 7701 (2022)
Finite-difference methods are the most widely used methods for seismic wavefield simulation. However, numerical dispersion is the main issue hindering accurate simulation. In the case where the finite-difference scheme is known, the time dispersion c
Externí odkaz:
https://doaj.org/article/772abf5ada2a4aec9b7041ecf665d68c
Autor:
Marwan Alquran
Publikováno v:
Results in Physics, Vol 28, Iss , Pp 104577- (2021)
Higher-order temporal-dispersion partial differential equations have its capability to visualize the evolution of steeper-waves for shorter wave-length better than the higher-order KdV does. In this work, we study the physical-structure propagations
Externí odkaz:
https://doaj.org/article/a035eb40eafc4fdaa98d64e927dcea08
Autor:
Amit Kachroo, Surbhi Vishwakarma, Jacob N. Dixon, Hisham Abuella, Adithya Popuri, Qammer H. Abbasi, Charles F. Bunting, Jamey D. Jacob, Sabit Ekin
Publikováno v:
IEEE Access, Vol 7, Pp 73741-73750 (2019)
In this paper, off-body ultra-wide band (UWB) channel characterization and modeling are presented between an unmanned aerial vehicle (UAV) and a human subject. The wearable antenna was patched at nine different body locations on a human subject durin
Externí odkaz:
https://doaj.org/article/c8dc67453ed2411391114f7d115e38ae
Akademický článek
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