Thanks Jim Was not aware that <10 Ghz signals could penetrate so deeply. I work for a enterprise wifi company on the RF side and one of our key challenges is signal attenuation/distortion by building materials
Any pointers to papers on this? I did know that /tvb was using seismic sensors but moles are small you would need a high resolution seismic grid to accurately place them Woodchucks are much larger and they also tunnel and undermine things so easier to find with seismic sensor Sent from my iPhone On Jul 23, 2013, at 12:03 AM, Jim Lux <jim...@earthlink.net> wrote: > 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. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
