Two-dimensional detection of underground contamination and buried objects using cross-well radar

2006 ◽  
Author(s):  
Maria F. Serrano-Guzmán ◽  
Ingrid Padilla ◽  
Rafael Rodriguez
Keyword(s):  
Two Dimensional ◽  
Buried Objects ◽  
Underground Contamination

Bimodal detection of underground contamination in two dimensional systems

2007 ◽  
Author(s):  
Maria F. Serrano-Guzmán ◽  
Ingrid Padilla ◽  
Rafael Rodriguez
Keyword(s):  
Two Dimensional ◽  
Underground Contamination

scholarly journals Line Source Scattering by Buried Perfectly Conducting Circular Cylinders

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
F. Frezza ◽  
L. Pajewski ◽  
C. Ponti ◽  
G. Schettini
Keyword(s):  
Line Source ◽  
Scattering Problem ◽  
Wave Spectrum ◽  
Cylindrical Wave ◽  
Infinite Medium ◽  
Planar Interface ◽  
Circular Cylinders ◽  
Two Dimensional ◽  
Reflection And Transmission ◽  
Buried Objects

A two-dimensional scattering problem of a line source by a set of perfectly conducting circular cylinders buried in a semi-infinite medium is solved, in both TE and TM polarization. A cylindrical-wave approach is used and applied to both the field emitted by the source and the field scattered by the buried objects. Reflection and transmission of such fields through the planar interface are evaluated making use of the plane-wave spectrum of a cylindrical wave. Numerical results are presented, with checks confirming the validity of the method.

Low-frequency detection of two-dimensional buried objects using high-order extended Born approximations

2004 ◽  
Vol 20 (6) ◽  
pp. S41-S62 ◽  
Author(s):  
Tie Jun Cui ◽  
Yao Qin ◽  
Gong-Li Wang ◽  
Weng Cho Chew
Keyword(s):  
Low Frequency ◽  
High Order ◽  
Two Dimensional ◽  
Buried Objects ◽  
Frequency Detection

Reconstruction of two-dimensional buried objects by a differential evolution method

2004 ◽  
Vol 20 (6) ◽  
pp. S135-S150 ◽  
Author(s):  
A Massa ◽  
M Pastorino ◽  
A Randazzo
Keyword(s):  
Differential Evolution ◽  
Two Dimensional ◽  
Buried Objects

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.

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