Results 151 to 160 of about 1,351 (190)

Automated Data Extraction from Synthetic and Real Radargrams of Complex Structures

Journal of Environmental and Engineering Geophysics, 2018
ABSTRACT This paper presents a comparative study of two algorithms for detecting and analyzing the characteristic shapes of reflection obtained as a result of Ground-Penetrating Radar (GPR) scanning technology. The first algorithm is a sub-array processing method that uses direction-of-arrival algorithms and the matched filter ...
Xavier Dérobert, Miro Govedarica, Lara Pajewski   +2 more
exaly   +4 more sources

TSSA: Two-Step Semi-Supervised Annotation for Radargrams on the Greenland Ice Sheet

IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, 2023
IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, 16-21 July 2023, Pasadena, CA ...
Atefeh Jebeli, Bayu Adhi Tama, Vandana P. Janeja, Nicholas Holschuh, Claire Jensen, Mathieu Morlighem, Joseph A. MacGregor, Mark A. Fahnestock   +7 more
openaire   +2 more sources

Automated data extraction from synthetic and real radargrams of district heating pipelines

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR), 2017
The main goal of this paper is to investigate the performance of an algorithm for point extraction from hyperbolic reflections in synthetic and experimental Ground-Penetrating Radar (GPR) data. The real radargrams that we considered contain hyperbolic reflections due to the presence, in the surveyed area, of district heating pipelines DN250.
Govedarica, Aleksandar, Pajewski, Milan, Derobert, Miro, Ristic, Aleksandar, Vrtunski, Milan, Govedarica, Miro, Pajewski, Lara, Derobert, Xavier   +7 more
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GPR radargrams analysis through machine learning approach

Journal of Electromagnetic Waves and Applications, 2021
This work proposes a Machine Learning (ML) approach for the analysis and classification of Ground Penetrating Radar (GPR) given a limited number of B-scan images.
Fabio Mangini, Fabrizio Frezza, Francesca Ponti   +2 more
exaly   +2 more sources

2-D synthetic radargrams for archaeological investigation

Fourth International Conference on Ground Penetrating Radar, 1992
Ground radar is being used in archaeological surveys with considerable success. The structures at excavated sites nevertheless often turn out to be different from those determined from raw radar profiles. The primary reason for these differences is the broadness of the microwave beam transmitted into the ground (see Fig. 1).
Dean Goodman, Yasushi Nishimura
exaly   +2 more sources

Multilayer simulations for accurate geological interpretations of SHARAD radargrams

Planetary and Space Science, 2011
Abstract SHARAD (SHAllow RADar) is a nadir-looking Synthetic Aperture Ground Penetrating Radar on board NASA's 2005 Mars Reconnaissance Orbiter. There are three main characteristics that define the performance of this instrument: ground penetration (due to the operational frequency, the observed echoes can be related to reflections from surface or ...
P Perna
exaly   +2 more sources

A novel method for automatic clutter detection in radargrams acquired by orbiting radar sounders

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
Orbiting radar sounders are very important instruments that can probe the subsurface of planetary bodies from orbit. In particular, they produce vertical profiles revealing the geological structure of the subsurface. As a consequence of their nadir-looking acquisition geometry, radargrams may be affected by spurious off-nadir echoes due to surface ...
Lorenzo Bruzzone, Adamo Ferro
exaly   +2 more sources

Depositional Architecture of Fluvial Deposits in the Resende Basin Identified With Radargrams (GPR)

12th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 15–18 August 2011, 2011
The knowledge of the depositional architecture of sedimentary rocks to create predictive models for exploration and exploitation of economic minerals as well as for environmental purposes is of paramount importance. Ground penetrating radar (GPR) method has been proven to be very effective to map quickly and cheaply shallow geological structures using ...
Rodrigo Pereira de Souza Cavalcante, Paula Lúcia Ferrucio da Rocha, Gleide Alencar Nascimento Dias, Carlos Jorge de Abreu   +3 more
exaly   +2 more sources

Synthetic radargrams from electrical conductivity and magnetic permeability variations

Journal of Applied Geophysics, 1996
The objective of this work is to assess the importance of electrical conductivity and magnetic permeability variations in ground penetrating radar (GPR) reflections commonly interpreted only in terms of permittivity variations. We use the matrix propagator approach to obtain the surface electric field associated with a horizontally layered model whose ...
O Lázaro-Mancilla, E Gómez‐Trevino
exaly   +2 more sources

Analysis of Subsurface Hypotheses through Simulation of Rime Radargrams Based on Available Analogous Data

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
Radar for Icy Moon Exploration (RIME) is designed to characterize the subsurface geology of the Jovian icy moons. The RIME radargrams will show the combined response of a number of geophysical and geological characteristics of the ice-shells of these moons.
Lorenzo Bruzzone, Sanchari Thakur
exaly   +2 more sources