scholarly journals Two-Dimensional Linear Inversion of GPR Data with a Shifting Zoom along the Observation Line

2017 ◽  
Vol 9 (10) ◽  
pp. 980 ◽  
Author(s):  
Raffaele Persico ◽  
Giovanni Ludeno ◽  
Francesco Soldovieri ◽  
Albéric De Coster ◽  
Sébastien Lambot
Keyword(s):  
Two Dimensional ◽  
Linear Inversion ◽  
Observation Line

Two-dimensional MR elastography with linear inversion reconstruction: methodology and noise analysis

2000 ◽  
Vol 45 (8) ◽  
pp. 2081-2091 ◽  
Author(s):  
Jonathan Bishop ◽  
Abbas Samani ◽  
Justin Sciarretta ◽  
Donald B Plewes
Keyword(s):  
Noise Analysis ◽  
Two Dimensional ◽  
Mr Elastography ◽  
Linear Inversion

scholarly journals An algorithm for localization of cylinders by reflection mode scattered field

2008 ◽  
Vol 19 ◽  
pp. 11-16 ◽  
Author(s):  
A. Brancaccio ◽  
C. Di Dio ◽  
G. Leone
Keyword(s):  
Scattered Field ◽  
Simulated Data ◽  
Singular Values ◽  
Two Dimensional ◽  
Inversion Algorithm ◽  
Reflection Mode ◽  
Linear Inversion ◽  
Electrical Conducting ◽  
Conducting Cylinders

Abstract. The problem of localizing perfectly electrical conducting cylinders of arbitrary radius is dealt with in a two dimensional geometry. A reflection mode multi-frequency multi-bistatic configuration is considered, and a linear inversion algorithm based on the truncated singular values decomposition is proposed. The algorithm is validated against simulated data, and the effect of errors in the knowledge of the cylinders' radius is discussed.

scholarly journals Pseudo 3D Imaging of Dielectric and Magnetic Anomalies from GPR Data

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Raffaele Persico ◽  
Sergio Negri ◽  
Francesco Soldovieri ◽  
Elena Pettinelli
Keyword(s):  
Experimental Data ◽  
Born Approximation ◽  
3D Imaging ◽  
Three Dimensional ◽  
Magnetic Anomalies ◽  
Magnetic Characteristics ◽  
Two Dimensional ◽  
Linear Inversion

This paper deals with the reconstruction of buried targets exhibiting both dielectric and magnetic characteristics, starting from GPR data collected at the interface air/soil. The problem is tackled under the Born approximation. In particular, two-dimensional migration and linear inversion results will be compared versus experimental data and three-dimensional representations of the reconstructions achieved from both methods will be shown.

Two-dimensional and three-dimensional asymptotic Green's functions for linear inversion

1995 ◽  
Author(s):  
Andrzej J. Hanyga ◽  
Philippe Thierry ◽  
Gilles Lambare ◽  
Paulo S. Lucio
Keyword(s):  
Green's Functions ◽  
Green’S Functions ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Linear Inversion

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

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