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From: Arno Welzel <usenet@arnowelzel.de>
Newsgroups: comp.mobile.android
Subject: Re: What can't you do on Android WITHOUT a Google Account set up in
 the OS?
Date: Tue, 14 Jan 2025 20:51:00 +0100
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Carlos E.R., 2025-01-14 13:24:

[...]
> I don't know if related or not, but years ago there was a system used to 
> improve the accuracy of GPS, in places like harbours. They would put a 
> special transmitter at a site. The exact location of the site was known, 
> and also what error it got from the GPS system, continuously evaluated. 
> A ship would use that information to correct their error from their own 
> GPS receiver by comparison with the error on the site nearby. The 
> resulting precision was maybe one meter.

There is also a system called "High precision positioning" and the
accuracy is even less than a meter.

Also see here:

<https://www.u-blox.com/en/technologies/high-precision-positioning>

<https://www.ardusimple.com>


-- 
Arno Welzel
https://arnowelzel.de