3 ms·
The article is deeply confused. It’s true that optical clocks will improve the accuracy of our measurement of time, and it’s true that GPS depends on time, but
by fanf2 2y ago
The article is deeply confused.
It’s true that optical clocks will improve the accuracy of our measurement of time, and it’s true that GPS depends on time, but there are several steps between primary frequency standards (ie, optical clocks) and GPS, and several more steps between GPS and navigation applications.
So optical clocks cannot, in fact, have any effect on the end-user perceived reliability of GPS.
For that, the best solution is to revive LORAN which is much less susceptible to jamming. (And would also benefit from better atomic clocks.)
- mapt 2y agoMuch of Finland and Estonia are currently being jammed per https://gpsjam.org/?lat=58.53948&lon=24.82400&z=4.9&date=2025-03-08 https://gpsjam.org/?lat=58.53948&lon=24.82400&z=4.9&date=202... Finland is reintroducing DME: https://www.reuters.com/business/aerospace-defense/three-finnish-airports-mitigate-russian-gps-interference-with-radio-navigation-2024-11-07/ https://www.reuters.com/business/aerospace-defense/three-fin... Which seems to be a different concept from LORAN, but still useful for navigation when multiple base stations are in range. https://en.wikipedia.org/wiki/Distance_measuring_equipment https://en.wikipedia.org/wiki/Distance_measuring_equipment