OK, I have done a little digging because the Georesonance claims sound dubious to me at best, based upon my career in this field. I also worked for an Australian imaging company primarily involved in exploration (oil, gas, minerals). The images in the press releases and on their site, frankly looked totally bogus to me - especially the images of the 'plane'
First, there is no history of Georesonance anywhere. No listing of directors, officers or the scientists that the allude to on their website. There is also not enough detail on any of their case studies to confirm or deny, save one. They claim to have located a shipwreck in 2005 that to this day has never been found.
So I looked up David Pope and Pavel Kursa; David Pope? there are lot in Australia but none that seem to have any affiliation with Georesonance. Similarly, if you look up georesonance on linkedin - there is nada. With all the scientists they claim to have on each project, one would think that someone, somewhere would reference them.
So I went looking at Pavel Kursa - he is ukrainian but spent some time in Adelaide. I looked up patents he owned and they are related to displaying images from metal detectors. yeah, the kind grandpa uses. Then I found SA based company called minelab electronics - interestingly, they claim the same patents as our Pavel.
I conclude that this is a major scam. One that will embarrass a hell of a lot of people at that.