Cue magnetic mines, but where are you getting the gravitic mines from?

I don't think it's realistically possible to do that totally undetected. Since the earth's magnetic field is so weak and field strength goes down rapidly as distance increases, malicious actors probably couldn't spoof patterns well enough to make the data look real, at least not without coming very close and staying near their target.

Just sell initially fake map

You don't need to hack the quantum sensor. You'll hack the regular computer around the sensor.

Yes, constantly. The prepared map becomes less accurate over time.

It always is.

For those confused:

nm means Nautical mile here, not nano meter

Its better performance than existing non-gps systems - not better than GPS. For ships , being within 1nm after thousands of miles of travel is really well performing. Obvious the real play here is weaponry though, since GPS isnt reliable in warfare and on-board sensors can do the detail work of target identification once in an area, the hard part is a way for them to self navigate accurately over long distances without GPS.

GPS is vulnerable to various attacks.

It's unclear what the capabilities are, but there IS a Russian satellite that HAS jammed GPS for almost a whole hemisphere. It's operated several times for a couple seconds over these past few years.

Veritassium did a great presentation on how we know this.

https://youtu.be/tz23G_UXCGA

I think it's an error in the article, they meant 10x better than classical INS.

Why do you think they expect it to be permanent? We survey all kinds of stuff like this all the time.

It is not permanent, but the changes are slow enough

It also doesn't pretend the page failed to load when it detects an ad blocker.

Here is the real article without the compounding editorial errors.

https://doi.org/10.48550/arXiv.2608.25563

Inertial navigation (INSS) and GNSS (Sat nav)is two completely different concepts. Too bad the article misses this. Perhaps AI hallucinations?

That’s better, thank you

As a holder of a spatial degree I found it difficult to directly compare it favourably to GNSS. Even a simple binary code calculating a position with GNSS gives sub 10-20 metre accuracy, generally closer to 2 or 3.

Then you wouldn't be the ideal thing to compare this to. An experienced navigator with a couple basic tools could do similarly.

They are comparing purely inertial navigation (I assume using the advanced nav boreas D90) and inertial nav combined with gravity map matching.

It is more of a demonstration than a comparison. Pure inertial nav has no way to re zero from an external reference so the error only grows.

Both of these systems are worse than any form of sat nav. But both of them keep working if the sat nav is jammed.

https://doi.org/10.48550/arXiv.2608.25563

You don't. Any appropriately sensitive/accurate accelerometer or magnetometer is sufficient to do this.

The quantum part is 90% hype used to and attract funding. There are some advantages to the cold atom based sensors Q-CTRL makes, along with issues that need to be worked on, but they are other sensing technologies that could beat it in the long run.

Great, now I know my velocity but I don't know where I am.