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GPR Clutter Reflection Noise-Filtering through Singular Value Decomposition in the Bidimensional Spectral Domain
- Source :
- Remote Sensing, Vol 13, Iss 2005, p 2005 (2021), Digibug: Repositorio Institucional de la Universidad de Granada, Universidad de Granada (UGR), Remote Sensing; Volume 13; Issue 10; Pages: 2005, Digibug. Repositorio Institucional de la Universidad de Granada, instname
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Usually, in ground-penetrating radar (GPR) datasets, the user defines the limits between the useful signal and the noise through standard filtering to isolate the effective signal as much as possible. However, there are true reflections that mask the coherent reflectors that can be considered noise. In archaeological sites these clutter reflections are caused by scattering with origin in subsurface elements (e.g., isolated masonry, ceramic objects, and archaeological collapses). Its elimination is difficult because the wavelet parameters similar to coherent reflections and there is a risk of creating artefacts. In this study, a procedure to filter the clutter reflection noise (CRN) from GPR datasets is presented. The CRN filter is a singular value decomposition-based method (SVD), applied in the 2D spectral domain. This CRN filtering was tested in a dataset obtained from a controlled laboratory environment, to establish a mathematical control of this algorithm. Additionally, it has been applied in a 3D-GPR dataset acquired in the Roman villa of Horta da Torre (Fronteira, Portugal), which is an uncontrolled environment. The results show an increase in the quality of archaeological GPR planimetry that was verified via archaeological excavation.<br />Project “Innovación abierta e inteligente en la EUROACE” 0049_INNOACE_4_E - European Union (European Regional Development Fund) COMPETE 2020<br />Portuguese Foundation for Science and Technology (FCT) projects UIDB/04683/2020-ICT (Institute of Earth Sciences) and SFRH/BSAB/143063/2018
- Subjects :
- Computer science
digital signal processing
Science
0211 other engineering and technologies
applied geophysics
enhancement of 3D-GPR datasets
clutter noise removal
spectral filtering
02 engineering and technology
010502 geochemistry & geophysics
01 natural sciences
law.invention
Spectral filtering
Wavelet
law
Singular value decomposition
Radar
Applied geophysics
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Enhancement of 3D-GPR datasets
business.industry
Pattern recognition
Filter (signal processing)
Digital signal processing
Clutter noise removal
Noise
Ground-penetrating radar
Reflection (physics)
General Earth and Planetary Sciences
Clutter
Artificial intelligence
business
Subjects
Details
- Language :
- English
- ISSN :
- 20724292
- Volume :
- 13
- Issue :
- 2005
- Database :
- OpenAIRE
- Journal :
- Remote Sensing
- Accession number :
- edsair.doi.dedup.....46059628383050dc66da27a70c034a1a