> Military solutions will fall back to inertial, celestial or optical guidance, and people using GPS for navigation will at worst show up where they need to be somewhat later than planned.
The US Navy re-started celestial navigation a few years ago:
For those wanting to invest (substantially) more time, the two videos by "Tippecanoe Boats" are slightly rambling at times, but he does lay things out pretty well by the end of it (second is largely examples):
>> Military solutions will fall back to inertial, celestial or optical guidance, and people using GPS for navigation will at worst show up where they need to be somewhat later than planned.
> The US Navy re-started celestial navigation a few years ago:
Also, the SR-71, B-1, and B-2 and other aircraft have automated celestial navigation systems to provide corrections to their INSs:
Honestly, for military applications, GPS seems to be mainly useful for bad weather and providing navigation to the smallest units (and I'd think a small unit would be able fall back to a map and compass).
These military instructional videos are so great. They explain a lot of concepts very clearly. Nowadays videos seem to be more casual, with more focus on practice than understanding the theory.
> The US Navy re-started celestial navigation a few years ago:
Also, the SR-71, B-1, and B-2 and other aircraft have automated celestial navigation systems to provide corrections to their INSs:
https://www.thedrive.com/the-war-zone/17207/sr-71s-r2-d2-cou...
Honestly, for military applications, GPS seems to be mainly useful for bad weather and providing navigation to the smallest units (and I'd think a small unit would be able fall back to a map and compass).