Fig. 2. 3D-GPR exploration TX, RX transmission and reception principle (Mirror:sweden)
Fig. 1. A schematic diagram of exploration of single-channel GPR exploration
Fig. 3. 3D-GPR exploration TX, RX transmission and reception principle
Fig. 4. Road video camera and exploration location tracking system
Fig. 5. Status of used GPR equipment
Fig. 6. 3D-GPR exploration analysis program (Sinkhole Finder)
Fig. 7. 3D-GPR TEST BED
Fig. 8. 3D-GPR exploration in TEST BED
Fig. 9. Shot signal waveform and image capture in 3D-GPR
Fig. 10. GPR signal similar to a common signal waveform
Fig. 11. Three-dimensional analysis of 3D-GPR exploration
Fig. 12. Key factors for cavity analysis
Fig. 13. Results of common signal waveform analysis after applying major factor
Fig. 14. Crack in highway bridge abut
Fig. 15. 3D-GPR exploration result in highway bridge abut
Fig. 16. Ground reinforcement in settlement area
Fig. 17. 3D-GPR exploration result in highway bridge abut after ground reinforcement
Table 1. Status and causes of road dumps in seoul (EA, Road management department of seoul city)
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