How often has GPS, excluding intentional military operations, been unavailable?<p>Edit: Went looking around and it seem GPS has never suffered an outage. They have had issues with some satellites, even two days ago it seem, but never a true outage. <a href="http://navigationservices.agi.com/SatelliteOutageCalendar/GPSHistoricalOutages.aspx" rel="nofollow">http://navigationservices.agi.com/SatelliteOutageCalendar/GP...</a>
The author mentions how they're <i>not</i> going to talk about rumors several times over the course of the article. I'd love to hear what the rumor mill is saying about the possible causes of the outage.
I'm no expert but according to this site, linked in the article, it appears the system has started to come back online and that the issue was limited to the ephemerides: <a href="http://www.navsas.eu/node/611" rel="nofollow">http://www.navsas.eu/node/611</a>
It is a massive oversight that the satellites don't mark their own data as bad if not commanded to from earth.<p>There are lots of reasons ground stations could go offline, and having the satellites broadcast no data is far far better than broadcasting incorrect data.
Anyone in here have a LimeSDR? They look great on paper but I get a sense from what I’ve read that they can be a bit finicky to run.<p>Also I’m curious about the 1-bit recording. Is that a thing?