Thursday, December 14, 2023

EMP anti-drone weapons: Yes, but what about those nearby?

 

I note that the Pentagon is looking to develop an EMP (electromagnetic pulse) weapon to disable drone swarms.


Faced with the reality that drones are reshaping the modern battlefields in Ukraine and Gaza, the Pentagon has been tasked with finding a budget-friendly solution to eliminate these 'flying IEDs.' While missiles are too expensive, and laser beams are a distant dream, the next best cost-effective weapon US military officials are eyeing up could be electromagnetic pulse weapons to counter drone swarms.

. . .

The service outlined the drone-killing features of the new EMP weapon it is seeking:

"The Air Force Research Laboratory (AFRL/RI) is conducting market research to seek information from industry on the landscape of research and development (R&D) for available Electromagnetic Pulse (EMP) solutions towards countering multiple Unmanned Aircraft Systems (UAS). EMP solutions could be ground and/or aerial based that provide effective mitigation against Department of Defense (DoD) UAS groups 1, 2, and smaller group 3 aircraft." 

. . .

The proposed EMP weapon would be able to neutralize drones with a directed EMP blast to damage the electronic parts - this is a much cheaper solution than missiles that cost tens of thousands of dollars, if not hundreds of thousands, a piece.


There's more at the link.

This sounds like a very good idea from a military perspective, just as an anti-aircraft defense using laser beams or other directed energy weapons would be much more economical than one firing missiles (see, for example, Israel's "Iron Beam" system).  So far, so good . . . but EMP weapons are no respecters of persons or property.  What if your home, or your vehicle, is caught in the spread of such a weapon when it discharges?  Say goodbye to every microchip and integrated circuit you own.  Your car dies, your fridge, your washing-machine, probably your switchboard and everything electrical in your home as well - and none of them will come back on once the pulse dissipates.  The damage will be permanent.  The only fix will be to replace every affected component, appliance and vehicle.

You may say, "Well, I live far from every likely combat area, so that won't affect me."  Think again.  If it affects, say, 5% or 10% of those people in a country, the demand from those areas for replacement parts and equipment will be sudden and overwhelming.  It'll suck in everything available everywhere, and then some.  That means the rest of us will no longer be able to get the parts and services we need in lesser quantities to repair normal damage (e.g. power surges, lightning strikes, and so on).  The orders we place for those parts will be added to those needed for the EMP-affected areas, and will probably be given a lower priority.  Sucks to be us, I guess.

There's also the factor that such attacks will likely be more widespread than typical "front-line" warfare.  Drones can be sent anywhere at any time.  An enemy might smuggle drones into the USA, then launch a sudden, unexpected drone swarm attack on a major city (Washington D.C., anyone?), or a major economic target (a nuclear power plant, a series of transportation hubs, or whatever).  That would expose many "behind-the-lines" areas to EMP damage, with all the consequences I mentioned above.  Let that happen in more than one or two places and the attackers will have struck a crippling blow against any modern economy.  To take just one example, what if the Internet goes down?  I don't believe our current economy and system of government could function in its absence.  Administration, banking, shopping . . . all would be interrupted.  Chaos would ensue.

It's worth thinking beyond the obvious when one reads snippets of news like that.  It might be a very effective weapon.  It might also disrupt the very society it's intended to defend.

Peter


21 comments:

  1. And it would take out that pacemaker that you may have running your heart.--ken

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  2. A bad guy could release drones in order to provoke the use of the EMP weapon such as you suggested, in Washington or over a Military Airfield. Maybe over a crucial factory?

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  3. The recipients of the local EMPs will be too busy dodging 155 mm mortar rounds or ICBMs. If the EMP is nationwide then we have a serious problem as documented by MANY authors. See "Going Home: A Novel (The Survivalist Series)" by A. American for one of the best possible scenarios.
    https://www.amazon.com/Going-Home-Novel-Survivalist-American/dp/0142181277/

    Pray that you are home if an EMP happens and not 200 to 1,000 miles away from home. Pray that your vehicle computers survive the event. With over 100 cpus in modern cars and trucks, if just some of the cpus die then the whole vehicle may refuse to move. I highly doubt that our electricity grids will survive any kind of EMP.

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  4. And just like the drones themselves, once developed enough to put into general service, the tech will be available to anyone dedicated enough to build or buy it, and that will be effective and likely used against targets other than drones.
    John in Indy

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  5. Imagine all of the various machinery in modern hospitals that could become disabled; no more lab work, no x-ray machines, no computer systems, no patient moniters, and no elevators!
    Manufacturing would grind to a halt for many of the same reasons. No CNC machines, no computer systems, no hi-tech inspection equipment. The few machines that could still be viable could not possibly take on the workloads necessary to keep modern fighting forces in supplies and replacement parts.
    How would modern farming fuction? What about water plants?
    To give this really serious thought one's mind will be boggled at all of the implications of this possibly happening.
    irontomflint

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  6. Here we go, another fine waste of taxpayers money.

    Drones aren't armoured or complicated, you can kill one with a shotgun so why make it so complicated? Any projectile weapon married to a CIWS-type tracking system would do the job and you could probably build and deploy it within a year. All you really need to work out is how to get it off the boat and on to a truck or tracked chassis.

    This EMP rubbish is just milking the taxpayer. You would want lots of these things at low cost. Not three for billion...

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  7. "We had to destroy the village in order to save it..." - MACV briefing, Saigon, 1967

    Plus ça change and all that.

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  8. We harden electronics in military aircraft and other systems. It won't be long before drone manufacturers start shielding their devices from EMP. In fact I suspect many are already in the process of doing so. EMP weapons are just a phase in the ongoing evolution of weaponry.

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  9. OR... It the disruption of the society may indeed be the "feature" and not the "bug," paid for with tax dollars from the very society it disrupted... How convenient...

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  10. I really need to make sure I keep a couple of my older (pre-computer) bikes up and running. I almost wish I hadn't given my cousin my '72 Cheyenne.
    --Tennessee Budd

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  11. Think of the energy beam traveling as an expanding wavefront. Now consider the energy distribution per square area of that wave. Such a beam would need to be fairly close to target, tightly focused, and/or of extremely high total energy to be effective. I believe a wide-scale attack would require a significant number of high-energy sources to be effective over a large area; on the other hand, a semi-focused beam would cause all the damage described. But think of it more as a tornado than hurricane. Damaging but localized.

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    1. What I've seen discussed elsewhere is a narrow beam "emp rifle" type weapon.
      Yes, there will be some effects, particularly to aircraft, but they won't be as bad as a non directional weapon would be.
      Some people claim you can get this effect by disabling the door switch on a microwave.
      Yes, it's a concern - once it works, I wouldn't be surprised to see it used for seat raids and other situations.
      I suspect the big limiter will be power, and that the system would at least require a vehicle with a hefty generator; it won't be man portable for a long time, if ever.
      J

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  12. pleas show me any type of weapon that was developed for military use that did not end up used for other things (other than possibly nukes)

    especially with a weapon that will need to be built in enough quantity to be deployed in all the places that something like this would be deployed, it will leak out and be in the hands of crooks and terrorists.

    now think what they will do with this.

    David Lang

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  13. Back in the 90's the USAF had an EMP missile. It could be fired up to 30 miles for a 5 mile radius EMP airburst.

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  14. My thoughts were EXACTLY what Dan said above. Who do they think they are fooling? Measure vs Counter-measure. Military RPAs/UAVs would be readily "hardened" against EMP just like everything else on the battlefield. Plus "drones" are so cheap compared to EMP generators, that an adversary would still swamp the defenders with "electronic wave" attacks - like the Chinese did in Korea with human wave assaults.

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  15. What little I know of EMP it relies on either the sensitivity of the equipment (radios amplify the received signal a lot) or a long cable run (i.e. power lines) in order to build up the charge to do damage. In fact most civilian cars should survive and at most require a change in fuses or breaker reset. Your computers should be relatively safe unless you're close to a target and you are not using UPS to protect against power surges. Power grid is quite vulnerable as a whole due to distribution system (i.e. those big wires carrying electrons for miles will collect lots of magnetic energy)

    Using enough EMP to damage a drone is a good way to cause a lot of collateral damage to your own side. As noted above CIWIS with shotgun is probably best countermeasure and we already have the tech. Also you can have counter drones. Also you can harden buildings (how many drones must hit same spot with shaped charge to get through roof to hit generator?) What effect would EMP have on insulation of generator? Do you EMP your own facilities? What about portable field generators? Can you put up screens/tents that would distract a drone or be a shield? Drones aren't missiles, even cloth can stop one. What about wire mesh? EMP appears to be throwing the baby out with the bath water, or a great money sink to drain off what little capital remains into the military industrial complex.

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  16. And yesterday we got a huge solar flare X class which disrupted some aircraft radio comms. The CME following it could do more damage this weekend. EMP (or failure to harden against it) may yet be the death of us.

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  17. Cool, a weapon system that will destroy itself every time it fires.

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  18. > Cool, a weapon system that will destroy itself every time it fires.

    Land Mines in the air.

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  19. > I suspect the big limiter will be power, and that the system would at least require a vehicle with a hefty generator; it won't be man portable for a long time, if ever.

    Israel has a plane portable EMP system. They used it on Syria back in 2007 to crash the Syrian electric grid.
    https://en.wikipedia.org/wiki/Operation_Outside_the_Box

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