GPR amplitude maps - ugcs/GeoHammer GitHub Wiki
GPR amplitude maps display the strength of radar signals reflected from underground surfaces over a specific two-way travel time. By showing variations in signal intensity across a 2D area, these maps help identify and confirm the presence of buried pipes, structures, and other objects. They are a valuable tool in subsurface investigations, providing insights into the composition and layout of underground features.
Here we will use datasets which can be downloaded here.
Download and extract 2020-06-03-05-49-37-gpr - processed.zip file.
- Use the “Open files” toolbar button or Drag & Drop the required file for processing to UgCS Geohammer window.
- Make sure you have enabled amplitude map layer
and have switched on Autogain function. We can also adjust Contrast slider for better visual presentation.
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- In central area use
and 
sliders to place the upper dotted line above anomalies of interest, the lower line below anomalies. You will see amplitude map with your objects:
- If you need to make amplitude map layer points bigger, you can adjust the slider on the right side by the GPR processing menu:
- When we have found our area of interest, we can export our amplitude map as a .geotiff file. Click
, select folder and file name, and click Save.
You will have GeoTiff file with your amplitude map. Coordinates are in WGS 84, Web Mercator (EPSG:3857) projection.
Now you can import this file to any GIS/CAD software:
