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#171
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#172
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pervect wrote:
:Processors and computing power are getting cheaper every year - and :there are a lot of US weapons with military GPS around - so it's :conceivable to me that someone could obtain one of these weapons and :reverse-engineer the GPS system on them. Which does them absolutely no good at all. :If there is no sort of "auxiliary code input" to the weapon (i.e. some :sort of activation code that has to be input) the reverse engineered :weapons would work just as well as the US weapons, so the US would :have to make the choice of whether it was better for everyone to have accurate) GPS or nobody to have GPS. : :Without knowing for sure, I would personally expect that current :weapons would have some sort of auxiliary code, and that this code :would have to be entered as part of the target programming process which is quite long according to news reports, though it's getting :shorter). They aren't 'auxiliary codes' at all. Military GPS data streams are encrypted. You need keys to use them. Without keys you get nothing. This is why copying a GPS weapon exactly does you no good. :Assuming (as I suspect) that "auxiliary code input" to the weapon is :required, things get more complicated. Basically the question is how :long it would take for the enemy to figure out what the auxiliary code :was to activate their weapons. Longer than the key is good for. They change frequently, you see. :Pessimistically assuming that the current military GPS system does get :compromised, and that the code breaking process could be done in :minutes, the US is of course free to build a better one with more :modern (and longer) codes. Of course, retrofitting existing weapons :to use the new GPS system might be a bit involved. OTOH, it could be :as simple as pulling out a modular "black box", and replacing it with :a new improved one. Well, if you assume the enemy has magical powers (which is essentially what you're doing above), then I suppose anything is possible. Just by the way, even your "black box" replacement above isn't simple. Examine the replacement of PPS-SM by SAASM, for example. You know, if you want to keep speculating, you might want to learn a bit of something about the GPS system before you continue. See http://gps.losangeles.af.mil/user/pr...curity/hae.htm for a very brief synopsis on GPS security. -- "Millions for defense, but not one cent for tribute." -- Charles Pinckney |
#173
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#174
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#175
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#176
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#177
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In ,
Peter Stickney radiated into the WorldWideWait: In article , "John" writes: "phil hunt" wrote in What would be sensible strategies/weapons for a middle-ranking country to employ if it thought it is likely to be involved in a war against the USA or other Western countries, say in the next 10 years? To deal with the US Army... Use SUVs with anti-tank rockets and a millimetric radar mounted on the back. In iraq US gunners opened fire at 5miles. Since the rounds travel at a mile/second, this would give an SUV 5 seconds to dudge, which would be simple with guidence from the radar. Meanwhile the top-attack missiles tear through the thin turret roofs. Buy a few otto-76mm armed tanks with dual use surface/air to deal with incomming aircraft/missiles/bombs/helicopters and to rip enemy soldiers to pieces. 5 seconds to dodge... Dodge where, exqctly? In what direction? How much? To be at the least effective, you're going to have to somehow get 1 vehicle's size distance away from where you were. Since SUV's don't move a 1 mile/second... Oh, and what if the Rascally Americans don't open fire at 5 miles Becasue there's in a city, or there's intervening terrain, or you're not a visible target, and engave at a shorter distance? (Which is what happens. Even 500m (1500') is long range when you're not shooting at, say, Iraqi tanks in the open desert. In that case, they wouldn't be engaging SUV-type things with Main Gun rounds. ('cause it would go through the SUV, and the SUV behind the SUV, and the Tree behing the SUV behing the SUV, and the School behind the tree - you get the idea) They'd use either the .50 cal MG on the turret top, or teh .30 cal co-ax. (Don't discount the Coax. It's got a dedicated gunner with a telescopic sight, a laser rangefinder, and is mounted on a 65-ton tripod. In that case, you don't have 1 round to dodge, but several dozen. As for the top-attack missile - when is it going to be fired? Who's going to guide it? How are they going to maintian guidance for the 20-60 seconds it will take to reach its target while riding in a moving/evading/exploding SUV? To deal with the US Air Force... Buy old airliners and fit with reloadable missile launchers and modern AA radar, counter measures, and refueling probe. Take old fighter designs, and hang them fully fueled and armed from ballons. That'll multiply thier endurance by a factor of ten at least. Fit search-radar in envelope and have them patrol your boarder. Network them together and you'll have an end to surprise US attacks. I'd pay good money to see an F-104/Mirage II/MiG-21 launched from a balloon.If you could make that one work, Ringling Brothers would give you a contract But Quick. As for refrobbing old airliners as long-endurance Patrol Fighter AWACS - well, first, they're easy to detect, and therefore, neutralize. You can either shoot them down, or go around them. Being airliners, their ability to move crossrange will be poor. They'll also need improved airbases, and, as you mention, tankers. WHen the bases disappear, so does your Air Defence. (It's always struck me as amusing how many folks seem to think that all you need to improve aircraft range is a probe. You also need tankers. Lats of tankers. Lots of big tankers. Consider that in 1982, the RAF used its entire tanker force to get one Vulcan from Ascention Island to Port Stanley. (Victors, in this case - Not a lot of tankers, and not a lot of transfer fuel. The same mission could have been flown, by the U.Ss. with 3 aircraft - 1 B-52, and 2 KC-135s. The U.S. tanker fleet alone outnumbers most other nations entire Air Forces. To deal with the US Navy... Buy old torpedos and fit to larch home made rockets (see X-prize entries) with 50-100 mile range. Get the rockets to dump the torpedos within a few miles of a nimitz carrier groups and you're garanteed to blow up something *really* expensive! A _lot_ harder than you think. And the launches will be detected. A Numitz at flank speed would be a significant distance from the inital impact area before the Super ASROC you've described gets there. At which point, the torp, if it survives the impact intact (not a trivial thing), is goig to have a hard time finding a profitable target. In the meantime, you've now 1: Revealed your intentions in an unambiguous manner, and 2: Nicely marked all of your launching sites. making it damned hard to clain that it wasn't your doing. Teh end effect, even if you do hit a ship, would be an awful lot like kicking a nest of Africanized Bees. Alternatively buy the following: 1 million RPG-7s 5 million RPG-7 rounds 10 million AK-74s 1 billion bullets Distribute evenly through out your population, train them, set up a Swiss-style monitoring system, and let the Americans invade. Then blow up everything of value they own the second they let their guard down. They'll leave in a few months and you can go back to normal. In order to do that, you have to have a population that thinks the country you're leading is worth fighting for. But then, countries that its citizens thing are worth fighting for tend not to be high profile targets to the U.S. Alternatively fly a few airliners into american nuclear power stations. The aftermath of multiple chernobles will destroy America as an effective strategic power. Well, the onlu problem with _that_ one is that Chyernoble, bas as it was, didn't depopulate large stretches of the Ukraine or Russia. U.S. racotrs have far superior containment, and, in fact, are required to be designed such that they can shrug off a direct hit from a large airliner. You are the illegitemate son of Robert S. Macnamara, and I claim my 5.00! I support Peter's claim to the Fiver. John's cutesy-pie combat methods were interesting, slightly, but suited to a 1930's Boys' Book of How to Have a War. Peter did a fine job of dismissing them all. And I especially agree with the last one - countries where all the citizens are heavily armed are not countries like Iraq, where people the ruler doesn't like get fed alive into shredding machines. So they aren't the kind of country we'd be needing to invade. |
#178
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"Pete" wrote:
: :"phil hunt" wrote : : I imagine the missiles could : be programmed for a mission by sticking a computer with an Ethernet : cable into a slot on the missile. : :Here ya go. Code to this explanation, and you're all set. : :http://www.techblvd.com/Rvideo/Guidance.wav : :Easy. What's really spooky is that this isn't all that bad a description of how ProNav works. :-) -- "Millions for defense, but not one cent for tribute." -- Charles Pinckney |
#179
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#180
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Fred J. McCall wrote:
:celestial, Harder to do for a missile, wouldn't you say? The only weapons I'm aware of that even attempt this are ICBM warhead busses. Used to be popular for cruise missiles in the 50's and early 60's, but the units were pretty good sized. I have no idea if anyone is actually working on them today. D. -- The STS-107 Columbia Loss FAQ can be found at the following URLs: Text-Only Version: http://www.io.com/~o_m/columbia_loss_faq.html Enhanced HTML Version: http://www.io.com/~o_m/columbia_loss_faq_x.html Corrections, comments, and additions should be e-mailed to , as well as posted to sci.space.history and sci.space.shuttle for discussion. |
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