Data InterpretationData Processing

What is a Hilbert Transform in GPR? | Ground Penetrating Radar

By December 5, 2017 No Comments

What is a hilbert transform for GPR data?

This is a question asked by one of the LearnGPR community.

Hilbert Transform is a process that creates an envelope of the GPR trace where the positive and negative polarity amplitude responses of a reflection event get transformed into the total amplitude for each reflection response. This creates absolute values for each response so that the total amplitudes are comparable. This can sometimes be difficult to do when responses contain both positive and negative polarities.

In a recent development in GPR-Slice software, the Hilbert Transform can pic polarities based on the maximum amplitude band and convert each response into an envelope of the total amplitude, but keeps the dominant sign (+/-). This is a revolutionary adjustment that helps practitioners more easily interpret wave behaviors and helps reduce the range of possibilities for a given response.

If you use GPR and didn’t know how this worked, then you should get further training. Check out our upcoming webinars, classes, and live workshops at


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