On 12/23/18, grarpamp <[email protected]> wrote: >> Probably also coming soon, very high PGs wherein the codes, bandwidth and >> frequencies quickly hop according to a shared secret between the drone >> and >> its controller. This combination is being explored for possible Next >> Generation military comms. > > It is said that this is already in public knowledge and operation > within SDR community. > > Though instead of the conventional "bandwidth and frequencies", > all the observer sees on their spectrum is random noise, let's say > across entire spectral ranges... from start freq to end freq of entire > frequency range of ATSC / WiFi / Cellular / FM / Etc allocation > space... more generally, across entire start to end of whatever > capability range of the tx / rx hardware in use. And where a > pre shared or negotiated key is used to impart or mask > data into, and out of, the noise. It's not even that these may > have, or be, waveform carriers, as the noise may be spark > gaps driven, impulse / transform function generators, etc. > > And the difficulty in triangulating such noise, > ie: how exactly does one lock onto random energy, > the galactic radiation problem, from everywhere > and nowhere. > > Post links to your favorite papers on these topics.
https://en.wikipedia.org/wiki/Tracking_and_Data_Relay_Satellite_System https://en.wikipedia.org/wiki/Lacrosse_(satellite) https://en.wikipedia.org/wiki/Future_Imagery_Architecture https://en.wikipedia.org/wiki/USA-224 https://en.wikipedia.org/wiki/2012_National_Reconnaissance_Office_space_telescope_donation_to_NASA https://en.wikipedia.org/wiki/Space-based_radar https://www.youtube.com/watch?v=_Ndr2EYkhA8 https://www.youtube.com/watch?v=MViVyocQhVw https://www.youtube.com/watch?v=Zf53Pg2AkdY Radar Love... ;)
