Generation of point scatterer models for simulating ISAR images of ships

1997 ◽  
Author(s):  
B. Haywood
Keyword(s):  
Point Scatterer

scholarly journals Quantum chaos for point scatterers on flat tori

2014 ◽  
Vol 372 (2007) ◽  
pp. 20120509 ◽  
Author(s):  
Henrik Ueberschär
Keyword(s):  
Wave Function ◽  
Strong Coupling ◽  
Quantum Chaos ◽  
Recent Progress ◽  
Three Dimensional ◽  
Point Scatterer ◽  
Open Problems ◽  
Survey Article ◽  
Delta Potential ◽  
Flat Tori

This survey article deals with a delta potential—also known as a point scatterer—on flat two- and three-dimensional tori. We introduce the main conjectures regarding the spectral and wave function statistics of this model in the so-called weak and strong coupling regimes. We report on recent progress as well as a number of open problems in this field.

scholarly journals Sub-wavelength focusing of acoustic waves in bubbly media

2017 ◽  
Vol 473 (2208) ◽  
pp. 20170469 ◽  
Author(s):  
Habib Ammari ◽  
Brian Fitzpatrick ◽  
David Gontier ◽  
Hyundae Lee ◽  
Hai Zhang
Keyword(s):  
Acoustic Waves ◽  
Wave Scattering ◽  
Low Frequency ◽  
Scattering Function ◽  
Point Scatterer ◽  
Layer Potential ◽  
Spherical Bubble ◽  
Acoustic Wave Scattering ◽  
Frequency Regime ◽  
Sub Wavelength

The purpose of this paper is to investigate acoustic wave scattering by a large number of bubbles in a liquid at frequencies near the Minnaert resonance frequency. This bubbly media has been exploited in practice to obtain super-focusing of acoustic waves. Using layer potential techniques, we derive the scattering function for a single spherical bubble excited by an incident wave in the low frequency regime. We then propose a point scatterer approximation for N bubbles, and describe several numerical simulations based on this approximation, that demonstrate the possibility of achieving super-focusing using bubbly media.

Focusing Problems of a Buried Point Scatterer using a Low Frequency SAR

2011 ◽  
Vol 47 (1) ◽  
pp. 438-453 ◽  
Author(s):  
Jean-Marc LeCaillec ◽  
Salah Redadaa ◽  
Christophe Sintes ◽  
Basel Solaiman ◽  
Malek Benslama
Keyword(s):  
Low Frequency ◽  
Point Scatterer ◽  
Buried Point

Multipath height finding of a point scatterer in a 3-D marine scene

2012 ◽  
Author(s):  
J. Habonneau ◽  
A. Khenchaf ◽  
J.-M. Le Caillec ◽  
D. Gueriot ◽  
L. Mandridake
Keyword(s):  
Point Scatterer
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