Narrow‐band pulse propagation in a one‐dimensional stratified random medium

2002 ◽  
Vol 112 (5) ◽  
pp. 2215-2215
Author(s):  
Shimshon Frankenthal ◽  
Mark J. Beran
Keyword(s):  
Pulse Propagation ◽  
Narrow Band ◽  
Random Medium ◽  
One Dimensional

ANALYSIS OF PULSE PROPAGATION THROUGH A ONE-DIMENSIONAL RANDOM MEDIUM USING COMPLEX MARTINGALES

2008 ◽  
Vol 08 (01) ◽  
pp. 127-138 ◽  
Author(s):  
JOSSELIN GARNIER ◽  
GEORGE PAPANICOLAOU
Keyword(s):  
Frequency Domain ◽  
Transmission Coefficient ◽  
Pulse Propagation ◽  
Random Medium ◽  
Asymptotic Limit ◽  
Diffusion Approximations ◽  
Martingale Representation ◽  
One Dimensional

We show that the propagation of pulses in a one-dimensional random medium can be characterized using a new complex martingale representation of the transmission coefficient. This representation holds in the frequency domain and in a certain asymptotic limit where diffusion approximations can be used.

One-dimensional narrow-band conductors

2021 ◽  
Vol 47 (9) ◽  
pp. 715-739
Author(s):  
L. A. Pastur ◽  
V. V. Slavin ◽  
A. A. Krivchikov
Keyword(s):  
Narrow Band ◽  
One Dimensional

Ultrasonic pulse propagation in inhomogeneous one-dimensional media

1998 ◽  
Vol 104 (1) ◽  
pp. 57-63 ◽  
Author(s):  
N. Cretu ◽  
P. P. Delsanto ◽  
G. Nita ◽  
C. Rosca ◽  
M. Scalerandi ◽  
...  
Keyword(s):  
Pulse Propagation ◽  
Ultrasonic Pulse ◽  
One Dimensional

Pulse propagation in one-dimensional nonlinear chains

1982 ◽  
Vol 1 (5) ◽  
pp. 697-715 ◽  
Author(s):  
M. Leo ◽  
R. A. Leo ◽  
G. Soliani ◽  
G. Mancarella ◽  
L. Martina
Keyword(s):  
Pulse Propagation ◽  
One Dimensional

Full-Spectrum k-Distribution Model for Radiation in Gas Based on Multi-Group Methods

2014 ◽  
Vol 1008-1009 ◽  
pp. 839-845
Author(s):  
Yue Zhou ◽  
Qiang Wang ◽  
Hai Yang Hu
Keyword(s):  
Narrow Band ◽  
Wide Band ◽  
Distribution Model ◽  
Full Spectrum ◽  
Distribution Method ◽  
One Dimensional ◽  
Group Methods ◽  
Monotonically Increasing Function ◽  
Homogeneous Media ◽  
Increasing Function

The k-distribution method applied in narrow band and wide band is extended to the full spectrum based on spectroscopic datebase HITEMP, educing the full-spectrum k-distribution model. Absorption coefficents in this model are reordered into a smooth,monotonically increasing function such that the intensity calculations are performed only once for each absorption coefficent value and the resulting computations are immensely more efficent.Accuracy of this model is examined for cases ranging from homogeneous one-dimensional carbon dioxide to inhomogeneous ones with simultaneous variations in temperature. Comparision with line-by-line calculations (LBL) and narrow-band k-distribution (NBK) method as well as wide-band k-distribution (WBK) method shows that the full-spectrum k-distribution model is exact for homogeneous media, although the errors are greater than the other two models. After dividing the absorption coefficients into several groups according to their temperature dependence, the full-spectrum k-distribution model achieves line-by-line accuracy for gases inhomogeneous in temperature, accompanied by lower computational expense as compared to NBK model or WBK model. It is worth noting that a new grouping scheme is provided in this paper.

Radiation of charge moving in one-dimensional fine-scale random medium

1991 ◽  
Vol 34 (7) ◽  
pp. 691-693
Author(s):  
F. G. Bass ◽  
S. I. Khankina
Keyword(s):  
Random Medium ◽  
Fine Scale ◽  
One Dimensional
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