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I thought so for a long time, but then learned about spread-spectrum and frequency-hopping (with cryptographically randomized pattern) radio communication techn

by ansgri 5y ago

I thought so for a long time, but then learned about spread-spectrum and frequency-hopping (with cryptographically randomized pattern) radio communication techniques which are employed in military-grade communications, and suddenly reliably jamming GPS without jamming literally everything becomes very hard.

vbezhenar 5y ago
I'm literally experiencing GPS jamming when I'm driving my car near president palace. Like one second I'm moving on road and next second I'm jumping to random places few hundred meters away until I passed long enough. Navigator sometimes goes crazy because of that. So at least civilian GPS is possible to jam.
- pfortuny 5y ago
  Well the US Govt is the “owner” of the protocol, they must be able to dos something about it.
  - ac29 5y ago
    The US doesnt have a presidential palace, so this must be in a foreign country. There isnt really anything the US can do for localized jamming in a foreign country.
jvanderbot 5y ago
That's great for radios, but I wasn't aware GPS satellites employed this technology in their transmitted beacons.
- Johnythree 5y ago
  GPS does use Spread Spectrum for its navigation beacons.
  - willis936 5y ago
    SSC does next to nothing for jamming. It changes the band by a negligible amount.