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Ground Penetrating Radar (GPR) | Military | UXO

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UXOs exist in regions that have encountered substantial bombing during past wars, such as Europe, Asia and the US.
UXOs deteriorate over time making them more sensitive and more likely to explode if disturbed.
UXOs prevent civil land use, are a danger to public safety and are a significant environmental concern.
Locating UXO prior to excavation is required to prevent serious consequences.

Veröffentlicht in: Technologie
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Ground Penetrating Radar (GPR) | Military | UXO

  1. 1. Using Ground Penetrating Radar for Unexploded Ordnance (UXO) Detection
  2. 2. © Copyright 2018, Sensors & Software Inc. UXO are a hazard and need to be safely located and removed CNN, 2018 The Guardian, 2017
  3. 3. © Copyright 2018, Sensors & Software Inc. • UXOs exist in regions that have encountered substantial bombing during past wars, such as Europe, Asia and the US. • UXOs deteriorate over time making them more sensitive and more likely to explode if disturbed. • UXOs prevent civil land use, are a danger to public safety and are a significant environmental concern. • Locating UXO prior to excavation is required to prevent serious consequences. The need for UXO Detection
  4. 4. © Copyright 2018, Sensors & Software Inc. • Magnetometers find buried ferrous (iron-rich) metallic objects, including UXO • Easy & quick locates • Less effective when: – Other metallic objects are nearby (utilities, fences, vehicles, etc.) – Geophysical noise – Magnetic contamination Magnetics is the most common Detection Method
  5. 5. © Copyright 2018, Sensors & Software Inc. • Ground Penetrating Radar (GPR) is a non-invasive technique for locating subsurface features • GPR works by emitting radio waves into the ground & measuring the reflected responses • GPR can detect bombs and artillery shells Ground Penetrating Radar can also be used for UXO detection
  6. 6. © Copyright 2018, Sensors & Software Inc. • GPR can detect all subsurface objects, including non-metallic items • The signal is directed into the ground so surface metal objects do not interfere with GPR data acquisition • GPR can help identify linear (utilities) versus point targets (UXO) • GPR provides depth information of targets GPR can overcome the limitations of magnetics
  7. 7. © Copyright 2018, Sensors & Software Inc. GPR lines can locate possible UXO UXO • As GPR data is collected, the results are shown in a “cross- section” view • A hyperbola indicates a possible point target • By examining the results, GPR can help locate areas where UXO could be buried.
  8. 8. © Copyright 2018, Sensors & Software Inc. GPR Grids can help detect UXO on large and complex sites • GPR lines can be processed into depth slices of the surveyed area • As you slice through at varying depths, point targets & linear utilities become visible Large targets of interest
  9. 9. © Copyright 2018, Sensors & Software Inc. GPR Grids can help detect UXO on large and complex sites • Depth Slices generated from the GPR survey can highlight point targets and linear utility features Small targets of interest
  10. 10. © Copyright 2018, Sensors & Software Inc. Example: WWII BMW fabrication plant • New construction was planned at a WWII BMW fabrication plant • 1st ½ meter of soil was littered with metallic debris from the prior building demolition making a magnetic survey not possible • A GPR survey was conducted
  11. 11. © Copyright 2018, Sensors & Software Inc. Aerial photo - June 7th 1945, Munich BMW plant was amidst heavily bombed area
  12. 12. © Copyright 2018, Sensors & Software Inc. Example: WWII BMW fabrication plant • GPR results showed an anomalous response just below the surface • A 1000 lb US Demolition Bomb was uncovered and successfully defused • Construction at the site proceeded without incident UXO
  13. 13. © Copyright 2018, Sensors & Software Inc. Example: 5 UXO located at a 1945 Airport North of Munich • Over 100 bombs were suspected to be buried throughout the airport site and needed to be found • An area of 10,000m2 was surveyed – Magnetic survey conducted over entire area and suspect areas identified – GPR lines were collected over the suspected targets to pin point location and depth of the UXO
  14. 14. © Copyright 2018, Sensors & Software Inc. Example: 5 UXO located at a 1945 Airport North of Munich Excavation of Line 2 based on GPR Results BOMB PIPE
  15. 15. © Copyright 2018, Sensors & Software Inc. Example: 5 UXO located at a 1945 Airport North of Munich Excavation of Line 6 based on GPR Results BOMB
  16. 16. © Copyright 2018, Sensors & Software Inc. • 5 bombs of type GP 150lb T1 (General Purpose) were found Example: 5 UXO located at a 1945 Airport North of Munich
  17. 17. © Copyright 2018, Sensors & Software Inc. Example: GPR used to confirm magnetometer and EMI located UXO • GPR was used to determine the exact location & depth of the suspected UXO Depth = 30cm Depth Slice Results in EKKO_ProjectTM:
  18. 18. © Copyright 2018, Sensors & Software Inc. Example: GPR used to confirm magnetometer and EMI located UXO Depth Slice Results in EKKO_ProjectTM: Depth = 50cm
  19. 19. © Copyright 2018, Sensors & Software Inc. Example: GPR used to confirm magnetometer and EMI located UXO Depth Slice Results in EKKO_ProjectTM: Depth = 60cm
  20. 20. © Copyright 2018, Sensors & Software Inc. Example: GPR used to detect artillery shells of various sizes, weight, depths and compositions A GPR line was collected over a test pit containing various artillery shells 5 kg artillery shells 1 kg artillery shell Plastic shell
  21. 21. © Copyright 2018, Sensors & Software Inc. GPR can be deployed in many ways… depending on your project needs
  22. 22. © Copyright 2018, Sensors & Software Inc. Use GPR to make Informed Decisions • Determine where the UXOs are • Get an idea of the depth of UXOs • Provides an overall picture of what is in the ground • Complements other Magnetic and EMI surveys • Identify key areas of interest for further investigation • Offers a variety of deliverables Subsurface Data Interpretation Knowledge Informed Decisions VALUE INFORMATION Subsurface Data Interpretation Knowledge Informed Decisions
  23. 23. © Copyright 2018, Sensors & Software Inc. • GPR provides a detailed picture of what is in the ground • GPR is cost-effective • GPR is easy to learn and implement in your workflow Use GPR for your UXO detection projects
  24. 24. © Copyright 2018, Sensors & Software Inc. • Customized training at your facility • Regular courses at Sensors & Software Inc. • Personalized webinars for your team • Free On-Demand training Training Available from Sensors & Software
  25. 25. © Copyright 2018, Sensors & Software Inc. Online Resources Newsletters Case Studies EKKO_Project software tutorials
  26. 26. © Copyright 2018, Sensors & Software Inc. Want to learn more? We would be happy to discuss how you can incorporate GPR into your UXO detection projects. Schedule a lunch & learn session today! Sensors & Software Inc. 1040 Stacey Court Mississauga, Ontario Canada L4W 2X8 Office: +1 905 624 8909 http://www.sensoft.ca/ Contact Us Sensors & Software Europe GmbH Auf der Haide 8 D-56203 Höhr-Grenzhausen Germany Office: +49 (2624) 915 9353 europe.sensoft.ca

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