[QUOTE=Jsm;44805127]...
You are kinda wrong, there are a lot of dual (and I assume tri) capable receivers out there but they have to be built to use that. There are differences between GPS and GLONASS that have to be taken into account (like the frequency differences..).
Everyone should just use the term GNSS though as in the future I assume all receivers will just pick up the lot and be super accurate.[/QUOTE]
Sure the receivers have to be built to support both, but most actually are. Anybody with a iPhone is using both GLONASS and GPS, my Nexus 5 tracks GLONASS and GPS, etc.
Cold Wars V: Putin Strikes Back
[QUOTE=pentium;44804152]I could of sworn that GPS was an international standard of satellite navigation. I am aware that the eurozone at least is trying to launch their own competing standard.....I think. If Russia shuts down ground stations in their region....well I can't really explain how exactly it affects their accuracy......actually just ignore my post because I mixed facts up with Globalstar and their shutdown of ground stations in the middle east during the war.[/QUOTE]
GPS is owned by the US military. They only happen to also give civilians access to a low accuracy version because dollars. Farmers can also buy a costly license for high accuracy GPS, which costs several hundred dollars a year.
[QUOTE=DrDevil;44805560]GPS is owned by the US military. They only happen to also give civilians access to a low accuracy version because dollars. Farmers can also buy a costly license for high accuracy GPS, which costs several hundred dollars a year.[/QUOTE]
How would that high accuracy version even work. iirc GPS is read only so there would be no real way of distinguishing non-licensed users from licensed ones.
[QUOTE=Mega1mpact;44805573]How would that high accuracy version even work. iirc GPS is read only so there would be no real way of distinguishing non-licensed users from licensed ones.[/QUOTE]
There is a second, encoded signal with more precise timing data.
[QUOTE=DrDevil;44805869]There is a second, encoded signal with more precise timing data.[/QUOTE]
But how would they enforce licensing? Wouldn't it be easy to just use that signal without permission?
Wouldn't this be a pretty big deal?
Correct me if I'm wrong but IIRC those GPS stations are being made use of by a lot of various things like for example all airtraffic.
These are a bunch of GPS monitoring stations that are used by US DoD to observe that state of the constellation, check for degraded accuracy, etc. They don't control anything and they aren't a part of any ground-based augmentation systems. GPS recievers in phones, cars, planes, etc do not communicate with these stations, the stations themselves do not transmit anything useful for navigation, they are passive.
Switching these off will mean some irritation for DoD and literally nothing for the end user. To prevent further panicking please read the wiki on GPS :)
[QUOTE=laserguided;44804419]The dispute of GLONASS stations in the U.S. has been going on for a year. It has hardly anything to do with the Ukraine crisis. You are just uninformed.[/QUOTE]
and if you think it isn't influencing the ukraine crisis or is it self influenced by the crisis, you must be very naive
[QUOTE=pentium;44804098]I'm sure it means that all non-military GPS services will stop functioning or operate with terrible accuracy.
In other words, you better hope you know how to read a map.[/QUOTE]
With all the Russian ArmA players I'd be surprised to find someone over there that couldn't read a map
[QUOTE=Reshy;44804202]The Cold War is baaaaaack.[/QUOTE]
[QUOTE=ForgottenKane;44804385]When did it end?[/QUOTE]
[QUOTE=ColossalSoft;44804454]"Paused"
Or at least someone turned the volume down.[/QUOTE]
Some version of these 3 posts seems to end up in every single Russia thread.
[QUOTE=proch;44805945]Wouldn't this be a pretty big deal?
Correct me if I'm wrong but IIRC those GPS stations are being made use of by a lot of various things like for example all airtraffic.[/QUOTE]
These stations have no effect on any GPS services whatsoever. First of all, they're GLONASS stations, not GPS so they won't affect anyone but Russians. But even then, GPS services don't rely on ground-based stations to work, they connect to satellites and once they've established their location in relation to 4 different satellites, they can derive your location on Earth. These stations are used to gather information on the satellites themselves.
[QUOTE=DrDevil;44805869]There is a second, encoded signal with more precise timing data.[/QUOTE]
Its not [I]that[/I] much more precise any more, since Clinton had SA turned off. Its only more precise as there is second timing signal. Its not actually military only, you can buy VERY expensvie consumer GPS recivers that pick it up. All it does is send another timing pulse on a different frequency, I think it can be fine tuned or something to make it useless though if need be.
[editline]14th May 2014[/editline]
[QUOTE=l337k1ll4;44806600]These stations have no effect on any GPS services whatsoever. First of all, they're GLONASS stations, not GPS so they won't affect anyone but Russians. But even then, GPS services don't rely on ground-based stations to work, they connect to satellites and once they've established their location in relation to 4 different satellites, they can derive your location on Earth. These stations are used to gather information on the satellites themselves.[/QUOTE]
Not quite, the ground station has to upload certain data for the satellite to know where it is so it can adjust the timing signal accordingly.
[QUOTE=ZakkShock;44804101]We'll have to use a map?
Oh [i]nooooooo![/i][/QUOTE]
GPS has applications outside of devices used in cars. Keep in mind that aircraft use GPS too.
Breaking news: Russia deactivates all US GPS stations in Russia, GPS stops working in Russia only :v:
is the entire russian goverment staffed with big babbies?
[editline]14th May 2014[/editline]
[QUOTE=Biotoxsin;44807391]GPS has applications outside of devices used in cars. Keep in mind that aircraft use GPS too.[/QUOTE]
aircraft primarily use radar guidance though
[QUOTE=Sableye;44810241]
aircraft primarily use radar guidance though[/QUOTE]
Not for navigation, they use INS and GPS type things.
Things like this though will prevent people authorising it though, its hard for people to convince the authorities that WAAS'd GPS is safe as it is without the threat of people trying to disrupt it.
The US is acting like a little kid on this one. They are allowed to put their station in another country while the other country cannot do the same in the US. Who would have guessed the US would have another double standard yet again. I mean could we at least let technology and science stay out of politics? We'll all be better off if politicians stop trying to interfere with our science (like the international space station situation being escalated for no reason :( )
[QUOTE=Jsm;44806668]Its not [I]that[/I] much more precise any more, since Clinton had SA turned off. Its only more precise as there is second timing signal. Its not actually military only, you can buy VERY expensvie consumer GPS recivers that pick it up. All it does is send another timing pulse on a different frequency, I think it can be fine tuned or something to make it useless though if need be.
...[/QUOTE]
Just how more accurate is this second timing signal? I've been looking at making a GPS backed timeserver for a while, and the receivers I'm looking at all seem to offer around the same resolution (About 100ns or so)
[QUOTE=pentium;44804098]I'm sure it means that all non-military GPS services will stop functioning or operate with terrible accuracy.
In other words, you better hope you know how to read a map.[/QUOTE]
So all GPS's will be based on Apple Maps
[QUOTE=mix999;44811536]The US is acting like a little kid on this one. They are allowed to put their station in another country while the other country cannot do the same in the US. Who would have guessed the US would have another double standard yet again. I mean could we at least let technology and science stay out of politics? We'll all be better off if politicians stop trying to interfere with our science (like the international space station situation being escalated for no reason :( )[/QUOTE]
I have informed the NSA of your disagreement.
[QUOTE=ZakkShock;44804101]We'll have to use a map?
Oh [I]nooooooo![/I][/QUOTE]
Trucker wont like it. It may slow down many delivery, especially freight broker.
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