Experiments on single mode excitation in shallow water propagation

1981 ◽  
Vol 69 (4) ◽  
pp. 963-969 ◽  
Author(s):  
C. Gazanhes ◽  
J. L. Garnier
Keyword(s):  
Shallow Water ◽  
Single Mode ◽  
Mode Excitation

STUDY ON SINGLE-MODE EXCITATION IN TIME-VARIANT SHALLOW WATER ENVIRONMENT

2014 ◽  
Vol 22 (01) ◽  
pp. 1440001
Author(s):  
DAYONG PENG ◽  
TIANFU GAO ◽  
JUAN ZENG
Keyword(s):  
Shallow Water ◽  
Recursive Algorithm ◽  
Water Environment ◽  
Sound Field ◽  
Single Mode ◽  
Shallow Water Environment ◽  
Mode Excitation ◽  
Ocean Environment ◽  
Short Time ◽  
Function Matrix

Single-mode excitation is a powerful tool for studying many oceanographic processes. Meanwhile, the complex time-variant ocean environment poses a great challenge for single-mode excitation because Green's function matrix of sound field changes quickly. In their previous work, the authors built a system to excite single-mode in a relative simple environment. The purpose of this paper is to study the feasibility of single-mode excitation in rapidly time-variant ocean environment. An improved recursive algorithm is presented to adapt for time-variant environment where the single-mode can be excited within very short time by this algorithm. A typical time-variant shallow water environment is simulated, and results of the single-mode excitation in this environment are presented.

scholarly journals Single-mode excitation in the shallow-water acoustic channel using feedback control

1997 ◽  
Vol 22 (2) ◽  
pp. 281-291 ◽  
Author(s):  
J.R. Buck ◽  
J.C. Preisig ◽  
M. Johnson ◽  
J. Catipovic
Keyword(s):  
Feedback Control ◽  
Shallow Water ◽  
Single Mode ◽  
Acoustic Channel ◽  
Mode Excitation

scholarly journals Shallow water single mode excitation using feedback control

1994 ◽  
Vol 95 (5) ◽  
pp. 2927-2927
Author(s):  
John R. Buck ◽  
Denis Peregrym ◽  
James C. Preisig ◽  
Josko Catipovic
Keyword(s):  
Feedback Control ◽  
Shallow Water ◽  
Single Mode ◽  
Mode Excitation

Side-Mode Excitation in Single-Mode Laser Diodes

2016 ◽  
Vol 16 (2) ◽  
pp. 158-163 ◽  
Author(s):  
Massimo Vanzi ◽  
K. Xiao ◽  
Giulia Marcello ◽  
Giovanna Mura
Keyword(s):  
Laser Diodes ◽  
Single Mode ◽  
Mode Laser ◽  
Single Mode Laser ◽  
Mode Excitation ◽  
Side Mode

Single-mode dynamic X-ray diffraction for Si and Si nanowires on Si

2014 ◽  
Vol 47 (1) ◽  
pp. 285-290
Author(s):  
Hsin-Yi Chen ◽  
Pei-Tzi Chu ◽  
Shih-Lin Chang
Keyword(s):  
Azimuthal Angle ◽  
Single Mode ◽  
Total Reflection ◽  
Wide Angle ◽  
Si Nanowires ◽  
X Ray Diffraction ◽  
Si Substrate ◽  
X Ray ◽  
Optical Reflection ◽  
Mode Excitation

A method is reported of realizing single-mode diffraction using singly polarized X-ray wide-angle incidence and grazing-emergence diffraction from a bare Si substrate and from Si nanowires on an Si substrate. For a bare Si substrate, the surface-diffracted and specularly reflected beams of single-mode excitation are separated owing to the extremely asymmetric diffraction at grazing emergence. For Si wires on Si, single-mode diffraction is achieved by tuning the X-ray energy or the azimuthal angle under the conditions of total reflection. This finding opens up new opportunities for using crystal diffraction, in addition to optical reflection or refraction, for the design of coherent X-ray optics.

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