Overview of modern methods of processing georadar signals in tasks of defectoscopy

Keywords: ultra-broadband GPR pulse signals, GPR signal processing methods, flat-layer environment, subsurface cracks, defectoscopy

Abstract

Relevance. The relevance of research is due to the need to implement strategic tasks to extend the residual resource of engineering structures and ensure their reliability. Implementation of this direction is associated with methods of subsurface sounding, means of obtaining information and its processing. Despite significant progress in the development of modern GPR signal processing methods, the task of choosing the most effective method for the purpose of GPR sounding has not yet been solved. The solution of the given task should be based on the analysis of modern methods of processing GPR signals with the definition of the scope of their application, limitations and advantages.

The purpose of the work is to analyze the possibilities of modern ultra-broadband ground-penetrating radars and methods of processing pulsed ground-penetrating radar signals to solve problems of flaw detection in flat-layer structurally heterogeneous structures. Materials and methods. Physics-mathematical models of propagation of ultra-broadband signals in flat-layered media, modern models and methods of processing and interpretation of ground-penetrating radar sounding data in relation to the tasks of flaw detection of non-rigid road clothing on highways form the basis of research.

The results. Based on the results of the analysis, the field of application of georadar signal processing methods in relation to the task of finding and positioning subsurface heterogeneities in flat-layered structurally heterogeneous environments, in particular in non-rigid road wear, is determined. The directions of further research in the field of ground-penetrating radar diagnostics of subsurface inhomogeneity have been determined.

Conclusions. Considerable experience has been accumulated in the application of ground-penetrating radars to solve problems of flaw detection, but research in the field of ground-penetrating radar diagnostics of subsurface cracks is very limited. Further research should be aimed at: improving the methods of restoring dielectric permeability in multilayer structures, which increases the reliability of GPR data interpretation; development of methods of registration and analysis of the signal reflected from in homogeneities of the structure, which creates a theoretical foundation of defectoscopy and expands the possibilities of ground-penetrating radar diagnostics; substantiating the type of antenna units for measurements, which will increase their accuracy.

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Author Biographies

D.O. Batrakov, V. N. Karazin Kharkiv National University

4, Svobody Square, Kharkiv, 61022, Ukraine

M.S. Antyufeyeva, V.N. Karazin Kharkiv National University

4, Svobody Square, Kharkiv, 61022, Ukraine

А.G. Batrakova, Kharkiv National Automobile and Highway University (KNAHU)

25, Yaroslava Mudrogo St, Kharkiv, 61002, Ukraine

S.N. Urdzik, Kharkiv National Automobile and Highway University (KNAHU)

25, Yaroslava Mudrogo St, Kharkiv, 61002, Ukraine

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Published
2022-11-02
Cited
How to Cite
Batrakov, D., Antyufeyeva, M., BatrakovaА., & Urdzik, S. (2022). Overview of modern methods of processing georadar signals in tasks of defectoscopy. Visnyk of V.N. Karazin Kharkiv National University, Series “Radio Physics and Electronics”, (37), 7-19. https://doi.org/10.26565/2311-0872-2022-37-01