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#71
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Defense against UAV's
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#73
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Defense against UAV's
wrote:
:On 30 May 2006 21:54:32 -0700, wrote: : :According to: : :http://en.rian.ru/onlinenews/20060530/48833304.html : :An Iranian UAV was able to circle a U.S. aircraft carrier undetected :for 25 minutes. : :Maybe so and maybe not. I'd bet against. Just because they didn't kill it doesn't mean they didn't see it. :With U.S. forces making increasing use of UAV's, the inevitable :question becomes: : :How can we protect our forces against UAV's when other countries or terrorist :organizations start using them against us? : :UAVs radiate. Their controlling facility radiates. If you radiate :you are detectable. If you can be detected you can be localized. If :you can be localized you can be targeted. I learned it the simple way: If you can see it, you can kill it. -- "When you enter a room full of armed men, shoot the first person who makes a move, hostile or otherwise. He has started to think and is therefore dangerous..." -- Colonel Paddy Mayne, co-founder of the SAS |
#74
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Defense against UAV's
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#75
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Defense against UAV's
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#76
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Defense against UAV's
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#77
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Defense against UAV's
Ken Chaddock wrote: Block 1B CIWS has an infrared and optical tracker that would do nicely against any UAV within it's range...the question is finding the UAV in the first place. An Infrared search system with the ability to designate to a B1B Phalanx would work quite well I think... But a prop-driven UAV with a small engine and some attention to exhaust masking would not be an easy IR target. If all you want to do is locate and identify a ship, and beam an illuminating laser at it to guide the incoming ordnance, then the UAV can be very small and very hard to detect. Tony Williams Military gun and ammunition website: http://www.quarry.nildram.co.uk |
#78
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Defense against UAV's
wrote:
: :Jack Linthicum wrote: : wrote: : Jack Linthicum wrote: : ... : The mention was of swarms which implies swarms of signals : not necessarily, if mostly autonomous UAVs are used : : which then implies if I have an ECM craft up and I get lots of radiation from one : direction I will send a message to that source. The decoys may work the : second time but not the first or third. : ?? : : The control point will be that, singular, one command directing all of the UAVs : from one spot. : Ever heard of fiber optics communications? Set-up multiple cheap : antennas for communication, and link them with fiber optics to your : safe hidden command centre. Why you guys always assume that the bad : boys are dumb beyond recognition alludes me... : : What the hell is an autonomous UAV? :An UAV that can fly itself using an autopilot (see cruise missiles) to redefined destination, This much is doable. :look around and try to see and identify ships You just departed our current reality. :and perhaps asks the controller for help in making crucial decisions attack/ignore/move elsewehere). : : and to what purpose? :Increase survivablilty/success of the system. Little, low bandwidth :communication = difficult to detect & jam. : : You need a unique signal for each aircraft otherwise they will all turn left at : the same time. :You are still thinking 'remote controlled airplane'. Think 'remote :command'. The UAVs are capable of flying themselves, they just might :need advice from time to time. You don't tell each single aircraft what :to do exactly, you just send a message to the whole swarm: "20% of you :attack the ship, priorities ar A,B,C, the rest go to box [X,Y] and :search for targets there" Each UAV rolls a dice, if it is in the 20%, And what do you do if they all roll '1'? How do you even know? :it rolls a dice to choose among the identifiable targets on the ship phased arrays, CIWS radars, bridge, aircraft on deck, catapult). Back into another universe. :They :actual flying and execution of the commands is done autonomously. (It :will be a bit more complicated, but this is the basic idea.) A 'bit more complicated' indeed - to the point of requiring sensors and software that don't exist in our universe running on hardware we can't build. : On the first shot you may hit a bunch of decoys but also : the target or targets. Especially if the decoys must be deployed under : the control of the central command. Second time the decoys may stay on : and the command freqs shut down. Third time no one cares and fires : enough weapons to take care of the site and the decoys. :No decoys needed. The UAVs themselves are cheap enough so that would be :waste. Perhpas you can have a hi/lo mix of UAVs with high end :sensors/UAVs with cheapo sensors (as the sensors are likely the :costliest part of the UAV), the cheapo UAVs acting as a sort of decoys but still being able to inflict damage, just with a bit lower robability.) You REALLY need to get out more and stop watching so many movies. : I have heard of fiber optic communications, those antennas will still : radiate :With autonomous UAVs, the radiation will be intermittent and low :bandwidth. Using spread spectrum/frequency agility or whatever, it :will be difficult to pick up out of the noise. And antennas are cheap :and you can have plenty of them.... Yes, "or whatever" seems to paper over a massive quantity of technological unlikelihoods and impossibilities. : It's the occupation afterwards that is the sticking point. :Well, I don't think US will be dumb enough to try to occupy Iran. But :with Dubya you never know.... As if you hadn't said enough dumb**** things.... -- "Ignorance is preferable to error, and he is less remote from the truth who believes nothing than he who believes what is wrong." -- Thomas Jefferson |
#79
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Defense against UAV's
Fred J. McCall wrote: wrote: :If the report on the Iran UAV is accurate, And how likely do you think THAT is? Have you ever heard of HELICOPTERS being scrambled off an aircraft carrier to intercept inbounds? I think the Iranians were being watched the whole time and just weren't smart enough to realize it. In other words, it's the usual baseless chest thumping that typically occurs in that region of the world. And do have any evidence that it was being watched, or that helicopters were scrambled to deal with it, or is that just "baseless chest thumping"? Presumably the USN would have said something by now if they had known about it all along? Tony Williams Military gun and ammunition website: http://www.quarry.nildram.co.uk |
#80
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Defense against UAV's
wrote:
: :Fred J. McCall wrote: : wrote: : : :If the report on the Iran UAV is accurate, : : And how likely do you think THAT is? : : Have you ever heard of HELICOPTERS being scrambled off an aircraft : carrier to intercept inbounds? : : I think the Iranians were being watched the whole time and just : weren't smart enough to realize it. : : In other words, it's the usual baseless chest thumping that typically : occurs in that region of the world. : :And do have any evidence that it was being watched, or that helicopters :were scrambled to deal with it, or is that just "baseless chest :thumping"? Presumably the USN would have said something by now if they :had known about it all along? Really? Why? I don't recall a press release every time we caught the Russians. The IRANIANS claim the helicopters were scrambled to intercept it. This is part of my reasoning for putting it down to baseless chest thumping. Hint: Helicopters aren't used as interceptors. -- "Some people get lost in thought because it's such unfamiliar territory." --G. Behn |
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