Alternative to GPS Navigation..

[AA3JY]

https://www.yahoo.com/finance/news/a...141100094.html

[Benz]

Don't submarines kind of go non-GPS with inertial navigation and gyrocompasses--essentially a very sophisticated dead reckoning? I wonder if airplanes could do the same.
Just in case this doesn't work.

[CarlF]

As someone who experienced plenty of moments of shear terror of "where the F*ck am I" in a Maine fog before GPS I have no interest in going back to just a compass, watch and DR track.

Most GPS glitches/jamming are very local and only for a few minutes. My boat doesn't go fast enough to get in trouble in that length of time (pilots potentially have a bigger problem)

And if it was a war? What idiot wants to sail their pleasure boat around in the middle of a war zone? I'd head for the nearest shore and find a buoy. No GPS needed. I'd also radio the CG for instructions because I don't want to be an "unidentified boat" when people with big guns are looking for the enemy.

[C420sailor]

This has already been used as an aid to other forms of navigation, like GPS—to further tighten things up. I’m not surprised they’re taking it a step further.

As for the above about subs and airplanes using INS/IRU/IMU/whatever...yep. Airliners have been using INS since at least the 60s. They’re VERY tight in the modern era. My last jet used a GPS aided INS.

This mag tech is all so we can operate in a GPS denied environment. Which we can right now...but it kinda (really) sucks doing so.