Episode 012 Shownotes

Here is a list of topics covered in my interview with Daniel Bigman of Learn GPR.

Daniel's LinkedIn

Background

• PhD from the University of Georgia and is an expert in non-invasive subsurface mapping and 3D imaging
• Started with archaeological project using NDT (Non-Destructive Testing) to map ancient site. Transitioned to civil engineers and using GPR for concrete scanning, utility locating.
• Daniel is on the board for Engineering Environmental Geophysical Society & Associate Editor for Fast Times a leading magazine for subsurface geophysical.
• GPR = Ground Penetrating Radar

LearnGPR

• Current project in Yucatan Peninsula investigating how ancient people interacted with environment.
• How GPR Works
• High frequency (1000-2600 Megahertz) yields better resolution
• Need to layer several techniques to find most to all buried infrastructure to create a ArcGIS or AutoCAD plaform.
  • Start with electromagnetic locator (EM) because it's faster
  • Then, use GPR to clean up data acquisition.
  • GPR &  EM can be used on same unit.

Problem with GPR

• GPR is not as effective in salt water environments
• Antenna frequency and geophysical properties of material can affect GPR results.
  • Need to use multiple GPR antenna's to access different depths and in different soil conditions.
  • No instrument is 100% effective.

Predictions

• How to integrate GPR and drones.
• Adoption of GPR on autonomous cars will be slower due to noise issues with additional electronic sources surronding GPR unit. However, technology is currently employed for landmine detection.

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