| Title: | Surface Reflection Suppression Method for Air-Coupled SFCW GPR Systems |
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| Authors: | ID Smogavec, Primož (Author)
ID Gleich, Dušan (Author) |
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| Files: |  https://www.mdpi.com/2072-4292/17/10/1668
 remotesensing-17-01668_(1).pdf (5,21 MB)
MD5: 29D4DA241BAA61388B7EDB4F45C6D6CE
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FERI - Faculty of Electrical Engineering and Computer Science
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| Abstract: | Air-coupled ground penetrating radar (GPR) systems are widely used for subsurface imaging in demining, geological surveys, and infrastructure assessment applications. However, strong surface reflections can introduce interference, leading to receiver saturation and reducing the clarity of subsurface features. This paper presents a novel surface reflection suppression algorithm for stepped-frequency continuous wave (SFCW) GPR systems. The proposed method estimates the surface reflection component and applies phase-compensated subtraction at the receiver site, effectively suppressing background reflections. A modular SFCW radar system was developed and tested in a laboratory setup simulating a low-altitude airborne deployment to validate the proposed approach. B-scan and time-domain analyses demonstrate significant suppression of surface reflections, improving the visibility of subsurface targets. Unlike previous static echo cancellation methods, the proposed method performs on-board pre-downconversion removal of surface clutter that compensates for varying ground distance, which is a unique contribution of this work. |
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| Keywords: | GPR systems, ground penetrating radar systems, surface reflection suppression, SFCW, surface echo, echo cancellation, receiver saturation |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 24.03.2025 |
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| Article acceptance date: | 07.05.2025 |
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| Publication date: | 09.05.2025 |
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| Publisher: | MDPI |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-18, article no. 1668 |
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| Numbering: | Vol. 17, iss. 10 |
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| PID: | 20.500.12556/DKUM-92759  |
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| UDC: | 621.396.969 |
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| ISSN on article: | 2072-4292 |
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| COBISS.SI-ID: | 235423235 |
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| DOI: | 10.3390/rs17101668 |
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| Copyright: | © 2025 by the author. |
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| Publication date in DKUM: | 12.05.2025 |
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| Views: | 195 |
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| Downloads: | 21 |
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| Metadata: |    |
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| Categories: | Misc.
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