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Oksana Kurkina, Efim Pelinovsky and Andrey Kurkin
The higher-order nonlinear Schrödinger equation with combined nonlinearities is derived by an asymptotic reduction from the (2+4) Korteweg?de Vries model for weakly nonlinear wave packets for the context of interfacial waves in a three-layer symmetric me...
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Maxim Protasov, Kirill Gadylshin, Dmitry Neklyudov and Ludek Klimes
This study considers the full waveform inversion (FWI) method based on the asymptotic solution of the Helmholtz equation. We provide frequency-dependent ray tracing to obtain the wave field used to compute the FWI gradient and calculate the modeled data....
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Nikolay Nefedov, Bogdan Tishchenko and Natalia Levashova
An algorithm is presented for the construction of an asymptotic approximation of a stable stationary solution to a diffusion equation system in a two-dimensional domain with a smooth boundary and a source function that is discontinuous along some smooth ...
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Wei Jiang, Yongxi Lyu and Jingping Shi
This paper proposes an approach of target tracking of a ground target for UAVs using Optimal Two-Stage Cubature Kalman Filter and Improved Coordinated Lateral Guidance Law. Firstly, the Optimal Two-Stage Cubature Kalman Filter (OTSCKF) is proposed to est...
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Rafik Absi
The flow in rivers is turbulent. The main parameter related to turbulence in rivers is the eddy viscosity, which is used to model a turbulent flow and is involved in the determination of both velocities and sediment concentrations. A well-known and large...
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Oskar Bschorr and Hans-Joachim Raida
The coordinate-free one-way wave equation is transferred in spherical coordinates. Therefore it is necessary to achieve consistency between ????????????????
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Alfred R. Osborne
Nonlinear Fourier Analysis (NLFA) as developed herein begins with the nonlinear Schrödinger equation in two-space and one-time dimensions (the 2+1 NLS equation). The integrability of the simpler nonlinear Schrödinger equation in one-space and one-time di...
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Dmitry Losev,Dmitry Bardashov
Pág. 1 - 4
The approximated solution of wave propagation problem in smooth heterogeneous media by use of the iterated kernels method is proposed. It represents the result of iterated method application to the integral equation equivalent to the Helmholtz scalar equ...
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Edoardo Del Pezzo and Jesús M. Ibáñez
In this paper we review and discuss the seismic method based on the analysis of seismic coda waves used in the last 10 years by the present authors and/or their co-workers, to produce separate images of intrinsic- and scattering attenuation in zones of p...
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D.V. Losev,D.S. Bardashov
Pág. 8 - 11
AThe approximated solution of the wave propagation problem in smoothly heterogeneous medium on the basis of the method of iterated kernels is proposed in this article. The solution is obtained by the method of successive approximations to an integral equ...
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