Talk:Satellite navigation

message: This article identifies only 2 [Satellite Navigation System]s around the world – [GPS] and [GLONASS]. Viewing the article [Wide Area Augmentation System] I noted that GPS covers, basically, North America. It seems to have spotty coverage of Canada according to the number of ground stations (reference and master) in relation to square miles. The only other fully functional satellite navigation system seems to be GLONASS, recently restored by Russia. Some indications are made that China, India, Europe, and Japan have systems under development, but years away from completion. That would mean places like Australia, South America, GB and Europe, most of Asia (including Japan)south of Russia have no satellite navigation system. There is even a map of GPS within the [Wide Area Argumentation System] article that seems to confirm the regional implementation of GPS to North America.
And yet, I know this is not true. I've seen articles discussing whether or not GPS systems purchased in the US will operate correctly in Australia and I have used my phone's GPS with a local SIM card in Europe.
A WP reader should not have to read beyond this article unequivocal information regarding the extent of implementation of satellite navigation systems.
PS: one of the linked articles has concentric rings around the Earth with radii distances measured in miles, kilometers, and "Mm" providing information of the kinds of satellites/systems orbiting at those distances – I can't even guess what what the Mm unit of measurement is and there is no diagram "legend" or other explanation.Da5id403 (talk) 20:11, 30 October 2012 (UTC)
thread_title:  This Article Is Misleading Regarding Implementation of Satellite Navigation Systems Around the World 

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thread_title:  External links modified 

message: There are now many systems that have been replayed that provide coverage in different regions. It would be ice to have a map that shows the coverage of the various systems available. Somerandomuser (talk) 16:24, 17 September 2017 (UTC)
thread_title:  Suggestion to add diagram/image of coverage of various systems 

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thread_title:  External links modified 

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thread_title:  External links modified 

message: Positioning, navigation and timing should be its own page and shouldn't redirect here; PNT involves more than satellite navigation (INS & Loran, for example, are non-satellite-based PNT technologies).
--Alessandriana (talk) 04:30, 10 January 2019 (UTC)
replies: text: I totally support creating a page on Positioning, navigation and timing that talks about those systems and links to this page. I don't see a redirect that is that specifically, but I may have missed it in the long list. —Ben Brockert (42) 01:11, 4 July 2020 (UTC)
thread_title:  Positioning, navigation and timing 

message: I guess it's one of those times where I know too much, but I have serious problems with the current page name "satellite navigation" because I know enough about the difficulties involved in orbital station-keeping to expect a dense article on that subject alone, in connection with the maintenance of satellite fleets. 
For now, I settled on a "for" now hat. 
If you want a two-word page title, it should be satellite geopositioning. 
'Navigation' should not stand alone. 'Navigation system' is perfectly fine, however. To really get this right, it should be geonavigation system but now I'm splitting hairs. 
You probably could concoct an astrobuck GNSS receiver for a lunar rover which used stray signals from the various Earth satellite systems o infer lunar positioning. Maybe enough of the downward-facing signal would bounce off the Earth atmosphere and out to the Moon. On a signal that weak, it might be hard to decode the ephemerides. But a small constellation of lunar rovers combining signals as a radio array could probably manage this feat. The Doppler shift will be extremely tiny, but you don't have an atmosphere to distort it (not unless you're mainly receiving upper atmospheric reflection). However, there are many satellite systems and surely after a few full orbital periods you'd be able to deduce something from which ones you've seen (mostly) and their precise fade-to-black cutoff timings as they swing around the Earth's dark side. Maybe after 24 hours, you'd be able to fix your lunar position to within 10 km or 100 km. Just guessing. It's such a bad way to invest $10 billion, nobody has yet attacked the first napkin. 
So it strikes me as a rather Earth-centric system at this point. Hence geonavigation.  
Another approach would be to have a small, technical parent page called satellite geolocation and to rename what remains of this page (probably 90%) to global navigation satellite system which is what people really expect to find here. 
Just spit-balling as I'm passing through. I'm such a tumbleweed editor, I rarely return to the same page twice. — MaxEnt 15:05, 23 November 2021 (UTC)
thread_title:  Orbital station-keeping page-name conflict 

message: User:212.12.37.98 proposed in July 2021 to merge satellite navigation device into this article with no discussion. I am currently neutral on the idea. Artoria2e5 🌉 14:03, 24 November 2021 (UTC)
replies: text: Closing given that there was no case made when the templates were added in July and no support since then with stale discussion. Klbrain (talk) 11:50, 12 December 2021 (UTC)
thread_title:  Merge from satellite navigation device 

message: I removed this addition to the lead because it was uncited and did not summarise body content (per MOS:LEAD):
The article currently says nothing about security or vulnerability to disruption. When cruise missiles etc are satellite guided, this seems an obvious risk. Can anyone add a section that might provide a home for the claim (with a citation of course)? 𝕁𝕄𝔽 (talk) 15:18, 27 December 2022 (UTC)
thread_title:  Vulnerabilities