Rumors re. GPS?

coco

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Found on http://www.defensetech.org/archives/001280.html and thought all of you might be interested by this!

US TO SHUT DOWN GPS IN CRISIS?
The White House has completed yet another piece of its never-ending review of the Clinton-era 1996 National Space Policy.

U.S. SPACE-BASED POSITIONING, NAVIGATION, AND TIMING POLICY, signed by the President on 8 December 2004, "establishes guidance and implementation actions for space-based positioning, navigation, and timing programs, augmentations, and activities for U.S. national and homeland security, civil, scientific, and commercial purposes."

In other words its a GPS policy, and pretty aggressive one at that.


The policy, which also comes in a classified flavor, reportedly resulted in a directive to the Secretary of Defense (SecDef) to develop plans to shut down civil use of U.S. GPS signals in certain emergencies and to deny advesaries access to foreign space-based satellite navigation services, such as the European Union's Galileo system.

Does anybody remember when Washington claimed that Galileo was unnecessary, because we would never shut GPS down?

The Europeans have been buzzing about what the U.S. might do to Galileo in a crisis. Publication of a new Air Force Counterspace Doctrine fueled these fears, after Peter Teets asked a rather provocative question in the foreward:


What will we do ten years from now when American lives are put at risk because an adversary chooses to leverage the global positioning system or perhaps the Galileo constellation to attack American forces with precision?
Comments like this have a way of being taken the "wrong way." An ugly row recently erupted after a British paper reported that European participants at a Royal United Services Institute conference thought they heard U.S. officials threaten "irreversible action" to deny hostile powers access to Galileo in a crisis--although other participants disputed that any threat was issued.

Some of the dispute can, I think, be traced to a difference in thinking about satellite navigation. Whereas Americans tend to think of GPS as a military application that civilians are permitted to use (reflecting the military origins of GPS), much of the rest of the world sees it as a global public utility. I suspect we'll be hearing a lot about this policy by Galileo's supporters.


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Anonymous

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>>If the US turns off GPS on a long term basis do you not think we may have other problems to think about than navigating our pleasure boats?<<

Since I live aboard my pleasure boat, navigating it safely is of prime importance to me. If the GPS service went dead it would make a nonsense of my nav setup - I would be worse off than in the 1970s but then we had a gonio crossed-loop DF system and all I have now is a Seafix that I rescued from obliteration in a boat jumble but very few coast beacons. No Decca, no Consul, no Loran, no decent DF beacons,.... I'd have to learn how to navigate all over again :)

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Shantyman

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They are capable of anything. Nothing would surprise me.
Brush up your basic pilotage and navigation skills. Dust off the "Dead Reckoning", save your sextant.
Some of us don't understand gps anyway!

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Graham_Wright

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The scenario implied in these posts is that of hostile action.
Unless you are in the middle of an ocean from where you can watch the missiles criss-crossing the heavens, I suspect the lack of ability to navigate is somewhat academic.

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Fin

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Don't forget that GPS is relatively easy to jam. And dealing with GPS jamming is something that's practiced on various military excercises in the UK. Always have a back up! Areas and times are notified.

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MIKE_MCKIE

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Agree with Lord Nelson, if it gets turned off, we will be in the middle of a (probably quite short) missile war, and pleasure boating will be almost the last thing on our minds.
Funny from Cold War era, "Action to be taken in event of a missile strike. Put your head between your legs & kiss your arse goodbye!"
Happy days, or something!

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bruce

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could be wrong, but isn't loran being upgraded in EU? would doubt that we would shut down gps unless we went to WWIII, and that prob would not last more than a day or two.

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MarkV

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When thinking about political issues such as this I usually try to work out what would happen of the roles were reversed in some way. How would the Americans react if Europe was talking about shutting down the US GPS system if it thought Europe was under attack. What about if China thought I was in imminant danger of precision weapons (this could include airliners with GPS nav systems) and jammed the US GPS system, I think this may be considered an act of war.

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Its_Only_Money

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The US have already shown/tested their capability to locally disrupt GPS signals (last test I remember hearing notice of was in the North Sea a year or two ago).

In terms of navigation, how much different is the GPS system being disrupted or shutdown to your very own GPS receiver breaking? Surely an eventuality for which all sailors should be prepared no???

Also worth bearing in mind that loads of military kit relies on the GPS signal to make it work, without it (ie a global or local shutdown), US military aircraft/ships/vehicles etc will get lost and their systems won't have the force-multiplier effect that working from GPS gives. Now their pilots have got well used to dropping GPS-guided bombs I'm quite sure they will have lost/thrown away any capability to drop them by any other aiming method...

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Peppermint

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Re: More of

a surprise than a problem I'd have thought. Most yotties would cope pretty well. That's if they can avoid the plunging aircraft and lost shipping.

It's my understanding that rather than turning it off the military advantage is in distorting the signal by a known amount. Then your stuff works and the other blokes doesn't. This has the benefit of regional application so it can be focused into a theatre of operations. I believe we had some local trials in the Irish Sea a few years ago. At least thats what I blame a close encounter with the Arklow banks on.



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graham

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I am presently digging a large hole in the garden to bury the boat in.

This has two purposes ,firstly if GPS gets turned off I will know our exact position and secondly we can use it as a very comfortable 4 berth "Anderson"shelter when the missiles start landing.

Good job weve got an Anderson, Beneteau shelter doesnt sound right??? /forums/images/icons/smile.gif

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BlueMan

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Re: More of

I think you'll find that the military use their own (more accurate) encrypted version of the GPS signal (called something like p-code) which they can leave alone while crippling the 'public' version.

I seem to recall that during the first gulf war they had to leave the public signal running as they didn't have access to enough military spec decryption capable receivers!

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longjohnsadler

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Read newspaper article recently saying loran, or a newer version, is going to be upgraded in case gps is jammed by terrorists and, if I remember correctly, mainly for planes landing - tho presumably it would be there for anyone with a receiver.

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searover

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I dont know what all the fuss is about quite simply boats have been plying there trade long before gps. arrived ,and also quite simply if you cant navigate then learn....

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