On 7/22/13 10:39 AM, Scott McGrath wrote:
Moles are a bit small it would probably work better for woodchucks. who are in
the process of undermining all lawns in neighborhood now.
In a more serious vein most ground penetrating radar is low frequency and I was
not aware that THz waves could penetrate ground more than a few CM
I believe tvb was using seismic sensors.
low microwave (<10 GHz) penetrates just fine to tens of meters. I
wouldn't want to run a comm link at any sort of data rate, but for 1 Hz
bandwidth and coherent detection, it works just fine.
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