Dr. Francke conducted a half-day workshop in Perth, Australia for the Australian Society of Exploration Geophysicists.  The workshop discussed the history of GPR, principles of EM propagation in the earth at radar frequencies, types of GPR systems and surveys, civil infrastructure applications, mineral exploration applications as well as an extensive discussion of exaggerated GPR claims such as megawatt radars.  The module on GPR performance claims is available for viewing on YouTube:

https://www.youtube.com/watch?v=HqO5LI8fiKA