[swiley]

We already had a system that didn't need satellites, it was deemed redundant and shut down.

[dghlsakjg]

The headline is deceiving. They are building a system that works where gps is weak; underwater, underground, and at the poles.

The lack of satélites is kind of irrelevant. They are designing a system that doesn’t use radio waves, which IS totally different to older systems.

[johnthescott]

yep. pretty sure a vectornav gives decent resolution using magnetic model of the earth, although not gps rez.

https://www.vectornav.com