Detection and Microwave Imaging of Conducting Objects Buried Very Closely to the Air-Soil Boundary

Date

2019-01-01

Author

Dinc, Selman
Elibol, Hande
Guneri, Rutkay
Ozdol, Ali Bahadir
Sik, Furkan
Yesilyurt, Ismail Taylan
DOĞAN, MESUT
Sayan, Gönül

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

113
views

0
downloads

Down-looking Ground Penetrating Radar (GPR) is an ultra-wideband electromagnetic sensor which has important applications such as IED and landmine detection, locating people in earthquake rescue operations, detection of archeological sites, mapping ice thickness or quantification of sedimentary structures in geophysical applications. The very first and important step in target detection by GPR is the removal of ground reflections caused by the air-soil boundary as these undesired signals are usually much stronger than the signals reflected and scattered from the buried targets. Ground reflections are well-known for their deteriorating effects on detection rate and false alarm rate in GPR applications. When a target is buried in a reasonable depth such as five centimeters or more, the ground reflections and the first returns from the buried object can be well separated in time, thus the removal of ground reflections turns out to be a standard procedure. However, if the burial depth is very small, the early returns from the target may be mistakenly removed together with the ground reflections. In such a case, a shallowly buried conducting target may go completely unnoticed. In this study, we will investigate the problem of detection and imaging of various conducting targets which are buried only one centimeter below the air-soil interface. The test targets are chosen to be a water-filled rectangular prism made of plastic; a thin rectangular prism coated by aluminum foil; two metal rods of the same length one with circular cross-section and the other one with a square shaped cross-section. After GPR-based measurements are recorded for these targets, a preprocessing method based on energy features and background removal will be used to eliminate air-ground reflections from the raw GPR A-Scan signals. C-Scan data sets, which are the collections of measured A-Scan signals recorded in cross-track and down-track directions, will be used for subsurface microwave imaging to sense the presence of the buried targets, and to figure out their shapes, if possible.

Subject Keywords

Ground Penetrating Radar, Microwave Imaging, Target Detection, Preprocessing, Energy-Based Target Features

URI

https://hdl.handle.net/11511/38965

DOI

https://doi.org/10.1109/iceaa.2019.8879078

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Detection of Conducting and Dielectric Objects Buried under a Layer of Asphalt or Concrete Using Simulated Ground Penetrating Radar Signals DOĞAN, MESUT; GÜMÜŞ, SİNEM; Sayan, Gönül (2017-09-15) Ground-penetrating radars (GPRs) are ultra-wideband microwave sensors mainly used for detection and identification of mines and other explosive objects buried in soil or hidden under road construction layers. In this study, we investigated effects of having different construction layers over the soil surface in buried object detection problem using A-scan GPR data. A novel preprocessing technique that makes use of cumulative energy curves of A-scan signals is used for preprocessing and target detection in ...
Inside-the-wall detection of objects with low metal content using the GPR sensor: effects of different wall structures on the detection performance DOĞAN, MESUT; YESİLTURT, Omer; Sayan, Gönül (2018-04-19) Ground penetrating radar (GPR) is an ultra-wideband electromagnetic sensor used not only for subsurface sensing but also for the detection of objects which may be hidden behind a wall or inserted within the wall. Such applications of the GPR technology are used in both military and civilian operations such as mine or IED (improvised explosive device) detection, rescue missions after earthquakes and investigation of archeological sites. Detection of concealed objects with low metal content is known to be a c...
Determination of buried circular cylinder with ground penetrating radar using an optical fiber sensor Bulur, Hatice Gonca; Şahin, Asaf Behzat; Department of Electrical and Electronics Engineering (2011) The terms ‘ground-probing radar’, ‘ground penetrating radar (GPR)’, ‘sub-surface radar’ or ‘surface-penetrating radar (SPR)’ refer to various techniques for detecting and imaging of subsurface objects. Among those terms GPR is preferred and used more often. In this thesis, the depth and the position of the buried circular cylinder are determined by a GPR system which comprises of an optical fiber sensor (OFS). The system is a combination of OFS, GPR and optical communication link. In order to determine the ...
Investigation of Simulated Ground Penetrating Radar Data for Buried Objects Using Quadratic Time-Frequency Transformations DOĞAN, MESUT; Sayan, Gönül (2017-07-14) Sub-surface sensing is a challenging area of research that highly benefits from the use of ultra-wideband ground penetrating radar (GPR) technology. Detection and classification of buried objects with reduced false alarm rates is still open to improvements. Use of joint temporal and spectral target features obtained from electromagnetic GPR signals using time-frequency representation (TFR) methods is highly promising because TFRs provide detailed information about the energy distribution of GPR signals over...
Optimization of vibration characteristics of a radar antenna structure Baran, İsmet; Özgen, Gökhan Osman; Ciğeroğlu, Ender; Department of Mechanical Engineering (2011) Radar antenna structures especially array antennas which are integrated onto structures of aerial vehicles are subject to dynamic structural and aerodynamic loads. Due to occurrences of these dynamic loads there will be certain dynamic deformations which affect the antenna’s performance in an adverse manner. The influence of deformations and vibrations are important on array antenna structures, since they cause a change in orientation of elements of the phased array antenna which affects the gain of the ant...

Citation Formats

S. Dinc et al., “Detection and Microwave Imaging of Conducting Objects Buried Very Closely to the Air-Soil Boundary,” 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38965.