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Estimate GPR Velocity ​

Geolitix assigns a propagation velocity for the entire project. This velocity can be entered in the Parameters drop down menu under the GPR Layer tab if known, or it can be based on a drop-down list of typical materials.

Estimate velocity based on a hyperbolic reflection ​

A more accurate method of velocity determination is to measure the angles of the asymptotes of a reflection hyperbola. This can be done in the selecting the GPR hyperbola icon Hyperbola icon.

  • Step 1: Open a GPR profile in 2D view where a clear hyperbola is seen.
  • Step 2: In the GPR Profiles layer options, select the Hyperbola icon icon.
  • Step 3: Move the guide to the top of distinct hyperbola.
  • Step 4: Select the hyperbola arms to best match the reflection shown on the radar profile.
  • Step 5: Click the Check mark icon to assign the velocity to the project.