1. () - GPR - 2015. 6. 1 Open Meeting R&D Updated 15.06.11 2. G P R ? 3. http://www.slideshare.net/ssuser6b53da 4. http://www.slideshare.net/ssuser6b53da 5. RADAR http://en.wikipedia.org/ Principle of a Sonar or Radar Distance Measurement 6. Ground Penetrating Radar A geophysical method that uses radar pulses to image the subsurface. This nondestructive method detects the reflected signals from subsurface structures. http://en.wikipedia.org/ 7. Received Data ASTM D 6432 11 Fig 1. A1 A2 A Trace +- Time A1 A2 Volts t=t1+t2 8. GPR Survey & Analysis A Series of Traces Time 1 2 3 4 5 Survey Reflector Depth 1 2 3 4 5 Survey Depth 1 2 3 4 5 Survey Time 1 2 3 4 5 Survey 9. GPR Survey & Analysis Wiggle Trace Linescans 10. 11. - 2012.04 ( ) http://m.zum.com/news/society/2294394 http://article.joins.com/news/article/article.asp?total_id=11176719&ctg=1200 2013.04 ( ) 12. 2 2 13. 14. https://www.youtube.com/watch?v=_N8AItTGUos 15. http://mnews.joins.com/news/article/article.aspx?ctg=&total_id=16832615 16. (61.3km) http://mnews.joins.com/news/article/article.aspx?ctg=&total_id=16832615 17. (61.3km) http://www.ilyoseoul.co.kr/news/articleView.html?idxno=113030 [ ] 865 18. (61.3km) http://article.joins.com/news/article/article.asp?total_id=17570705&cloc=olink|article|default 19. 20. [2006~] 21. [2006~] 22. [2006~] 23. Geo Search - https://www.youtube.com/watch?v=Af6jwxKzd60 24. Geo Search- https://www.youtube.com/watch?v=wj2mV9V1ZRA 25. Geo Search- https://www.youtube.com/watch?v=mKv6T9nVqpU 26. 2015 27. Question?