Issues on Intercepting Hypersonic Missile.

crobato

Colonel
VIP Professional
Those odds are clearly in favor of the attacker. A ship that is relying on its point defenses like SeaRAM or Phalanx is in deep trouble already. If 10 or more missiles get through within 10 km of the ship, that ship is going down.

But how are you going to get 10 of these missiles? A PLAN frigate can launch 8, a destroyer 16. A sub probably only four or six in a single volley. Assuming the frigate, based on our assumed theoritical odds, 6 will be intercepted in the outer zone, only two will reach the inner zone. A destroyer can lose 12 of the missiles, leaving only four survivors. Based on those odds, you would need 2 destroyers + frigate to take on the Aegis vessel.

So against a single AEGIS ship, an attacker need only launch about 20 anti-ship missiles to successfully hit it. In a hypothetical scenario with China, 20 missiles can be carried by about 7 H-6K's.

Which based on my scenario, only 5 missiles will reach the inner zone. You will need 14 H-6Ks to get your magical 10.

The odds are clearly with the attacking side -- as long as the attackers are able to coordinate a simultaneous attack by many missiles (this is where advanced C4ISR and AWACS become absolutely imperative) -- an AEGIS destroyer is no big deal. It will be defeated.

If you throw enough resources you can inevitably mission kill it (a single hit won't sink a ship by the way). But then ask yourself, how many AEGIS destroyers are there in real life?

Its always a bad strategy to sink too much resources to kill something.
 

Roger604

Senior Member
But how are you going to get 10 of these missiles? A PLAN frigate can launch 8, a destroyer 16. A sub probably only four or six in a single volley. Assuming the frigate, based on our assumed theoritical odds, 6 will be intercepted in the outer zone, only two will reach the inner zone. A destroyer can lose 12 of the missiles, leaving only four survivors. Based on those odds, you would need 2 destroyers + frigate to take on the Aegis vessel.

I am thinking more along the lines of air power:

The goal is to saturate each illuminator on each AEGIS vessel with about 6 to 10 missiles -- for each ship, 20 missiles must be launched simultaneously and arrive at their targets at the same time.

For an entire CVBG, that's 100+ missiles, which can be carried by about 20 H-6K (taking into account attrition). Then you need about 3x that number in fighters to escort the bombers.

So, to launch a saturation attack on a single CVBG, you need 20 bombers and 60 fighters. And they all need to be perfectly coordinated. Right now China does not have such a capability in a mature form -- although the pieces are falling in place. For an attack against 3 CVBG, you would need about 3x that number -- 60 bombers and 180 fighters.

Alternatively, you can use submarines:

Park 4 Yuans or Songs in waiting. When they attack, they can launch about 20-24 missiles at the same time. This would probably be enough to knock out a single destroyer. And then they scurry away.

Or build an SSGN, similar to Ohio SSGN, that can carry 140 anti-ship cruise missiles. This SSGN can hunt down the CVBG and launch all its missiles quickly. Those 140 missiles will be enough to disable the entire battle group.


Which based on my scenario, only 5 missiles will reach the inner zone. You will need 14 H-6Ks to get your magical 10.

Once you saturate the illuminators with 6 to 10 missiles, everything gets in.

Lucky for the PLAN, and other nations, they know better, and understand that a single AEGIS destroyer or cruiser is not going to be attacked, clinically, out on its own. It will be in the company of other assets that will make what you are talking about, both physically, electronically, and logistically much much harder than you presume or set forth, with little chance for success unless so much resource is thrown at it to make the cost benefit analysis almost always favor the defender.

Now Jeff, don't get me wrong. There is no doubt that the USN is the preeminent navy in the world by far. And my conclusion (above) is not much different from yours: currently, cracking even one CVBG with air power is very difficult for the PLA and while possible it takes an enormous amount of resources. Nonetheless, that amount of resources can be determined within some degree of error and in the near future (about 2-3 years) this will be within the capability of the PLA.
 
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Scratch

Captain
Sadly, you won't hardly find any DDG steaming through the ocean alone. Epsecially when there are signs of tension and within adversary strike range.
Furthermore, for an entire CVSG consisting of only one Tico and two burkes, depending on the loadout, you can easily find 200-300+ SAMs. Then there are still the CIWS.
There are also 10 illuminators on the escorts alone. (Do the Nimitz CVNs have illuminators?) So you can intercept 10 missiles every 2-5seconds.(?) (How long do the SPG-62s actually have to illuminate the target during the terminal phase?)
You are also assuming you found the CVSG, pinned it's location and can keep track of it to provide the AShM with an accurate aimpoint. Wich is not really easy at all if the group is alerted.
In addition, you believe all bombers would get within launch range and slip through AEW and CAP coverage. Wich is once more not sure at all.
 

IDonT

Senior Member
VIP Professional
So against a single AEGIS ship, an attacker need only launch about 20 anti-ship missiles to successfully hit it. In a hypothetical scenario with China, 20 missiles can be carried by about 4 H-6K's.

Forgetting about soft kill systems aren't we? Those 20 missiles are more likely to be homing on a decoy. Have you ever heard of Nulka?

I found it amusing how an combat system, on its 7th incarnation, that was designed to defeat a massive Soviet Backfire saturation attack be defeated by 20 missiles.
 
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Totoro

Major
VIP Professional
Not wanting to get into the details again, just a few things about nulka. The closer enemy radars are to possible targets, easier it becomes to distinguish a real return from a real ship from a generated fake return that nulka offers. Also, the larger RCS a ship has the harder it is for nulka to fake it, for a given distance to enemy radar. We of course can't know the precise ranges but any sort of SAR mode on a radar, when range to target permits it, will show if the target is a real ship or s small flying object. Incoming missiles with a non radar guidance, say IIR guidance, will not be affected by nulka.
Then there's ISAR modes, which is also quite effective as decoys working on the principle nulka uses, by their nature, can not send multiple different signals in different directions at the same time. One could compare the data from multiple radars and sift through the illogical returns that nulka would offer, as those would be the same to every radar when they shouldn't be.

That's not to say nulka isn't effective, what it would surely do is shrink the engagement ranges for the attacker, if he wants to positively identify the target. By how much, we can't know, and I guess that figure changes with the development of better and longer ranged SAR modes on the radars. More importantly, it'd mess with radars on the missiles themselves, which i suspect is its primary goal, as those, comparatively small radars with weaker processing ability, would have a harder time capturing high resolution images of the target or even sharing that data amongst themselves in real time. Still, better radars are being developed all the time, and nulka class decoys need to stay a certain size to be practical.
 

Roger604

Senior Member
Furthermore, for an entire CVSG consisting of only one Tico and two burkes, depending on the loadout, you can easily find 200-300+ SAMs. Then there are still the CIWS.
There are also 10 illuminators on the escorts alone. (Do the Nimitz CVNs have illuminators?) So you can intercept 10 missiles every 2-5seconds.(?) (How long do the SPG-62s actually have to illuminate the target during the terminal phase?)

LOL. An illuminator needs 5 seconds for each missile, and it needs time to turn around to engage another -- so you're talking about ~10 seconds for each engagement.

In the face of a coordinated saturation attack, that spells certain doom for the CVBG.

You are also assuming you found the CVSG, pinned it's location and can keep track of it to provide the AShM with an accurate aimpoint. Wich is not really easy at all if the group is alerted.
In addition, you believe all bombers would get within launch range and slip through AEW and CAP coverage. Wich is once more not sure at all.

Escorts are there to open a way for the bombers. 60 bugs are superbugs are not such a tough adversary.

I found it amusing how an combat system, on its 7th incarnation, that was designed to defeat a massive Soviet Backfire saturation attack be defeated by 20 missiles.

I find it amusing that you think it would be Soviet-era missiles that would be used!
 

Sea Dog

Junior Member
VIP Professional
LOL. An illuminator needs 5 seconds for each missile, and it needs time to turn around to engage another -- so you're talking about ~10 seconds for each engagement.

Really? 5 seconds? Are you so certain about that? Ever seen them operate? Again, this is simply just another one of your infamous guesses. Anyway, I'm certain you're not aware of the time-sharing algorithms that work in the system to allow maximum coverage per each illuminator. In addition, you still fail to view the whole package as a combined resource. This issue you bring up here is completely negligible in any real world scenario.

Escorts are there to open a way for the bombers. 60 bugs are superbugs are not such a tough adversary.

Yeah, but a carrier's hornets sure have enough hardpoints to make the situation non-viable. This situation is alot tougher than you think. Currently, what you're imagining in any open ocean scenario seems particularly difficult, especially when dealing with the ranges involved. And the lack of true airborne electronic warfare support, and current lack of long range refuelling capabilities. But the Superhornets do have their own EW support as a supplement to their own combat role. And refuel options as well.

I find it amusing that you think it would be Soviet-era missiles that would be used!

Roger, Anti-ship missile capabilities haven't changed all that much from what was used during the Cold War. This is one warfare area that hasn't seen any big revolutionary changes at all. They all pretty much still work the exact same way, save for a couple examples. Other than the latest Tomahawks and SLAM-ER's and perhaps KLUB, there is nothing out there today being used that presents any radical departures from past systems other than perhaps newer engines, better fuels, and the like. China has no missile currently that radically alters this balance or supersedes the overall operational capabilities of any missile fielded by the Soviet Union during the Cold War.

And like Crobato said, anything can be saturated if you throw everything including the kitchen sink at it. But getting to a point where you can throw anything like this is a tough proposition. And I also agree with IDonT. It's totally ludicrous to think that the small amount of missiles carried by 20 underpowered H-6's (if any happen to survive) could even come close to saturating a fully equipped CSG. These sytems were designed with a Soviet massed missile strike that have 4-5 times greater in numbers anything China could put together in numbers now. And was around when the USN did not have the ability to saturate the offensive spectrum like today. In today's world, it's gotten a whole lot tougher as the MK41 can now carry quad packed ESSM that can give an entire battle group over 900 missiles total or more to defend itself. Way more than what was used during the Cold War. To saturate that will take a considerably huge effort. Sorry Roger, but I don't see one naval force in existence that shows the numbers or logistical capabilities as of today to do it.
 
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Roger604

Senior Member
Anyway, I'm certain you're not aware of the time-sharing algorithms that work in the system to allow maximum coverage per each illuminator. In addition, you still fail to view the whole package as a combined resource. This issue you bring up here is completely negligible in any real world scenario.

Yeah sure... taking 5-10 seconds for each incoming missile while dozens more are incoming is "completely negligible."

Roger, Anti-ship missile capabilities haven't changed all that much from what was used during the Cold War. This is one warfare area that hasn't seen any big revolutionary changes at all. They all pretty much still work the exact same way, save for a couple examples. Other than the latest Tomahawks and SLAM-ER's and perhaps KLUB, there is nothing out there today being used that presents any radical departures from past systems other than perhaps newer engines, better fuels, and the like. China has no missile currently that radically alters this balance or supersedes the overall operational capabilities of any missile fielded by the Soviet Union during the Cold War.

Wrong! Did the late Soviet Union have China's current electronic capabilities? China has long moved on from Moskits. The most advanced Chinese anti-ship missiles are not well publicized but you can bet they will incorporate the most advanced electronics, and be capable of a massed coordinated attacks.

It's totally ludicrous to think that the small amount of missiles carried by 20 underpowered H-6's (if any happen to survive) could even come close to saturating a fully equipped CSG. These sytems were designed with a Soviet massed missile strike that have 4-5 times greater in numbers anything China could put together in numbers now. And was around when the USN did not have the ability to saturate the offensive spectrum like today. In today's world, it's gotten a whole lot tougher as the MK41 can now carry quad packed ESSM that can give an entire battle group over 900 missiles total or more to defend itself.

Sea Dog, I don't care if you have a billion ESSMs on your AEGIS destroyer. I have one word for you: illuminators. An AEGIS destroyer can't even handle more than 10 simultaneously incoming missiles.

Really ludicrous is denying this reality.
 

IDonT

Senior Member
VIP Professional
Wrong! Did the late Soviet Union have China's current electronic capabilities? China has long moved on from Moskits. The most advanced Chinese anti-ship missiles are not well publicized but you can bet they will incorporate the most advanced electronics, and be capable of a massed coordinated attacks.

Really ludicrous is denying this reality.

Hiding behind the "it's not publicized or classified" defence again are we? Show us proof!

According to Sinodefence, here is PLAN's current anti-ship missile force

YJ-62 (C-602)
3M-54E/E1 (SS-N-27)
3M-80E (SS-N-22)
YJ-7 (C-701)
CY-1
YJ-83
YJ-8 (C-801, CSS-N-4)
HY-1 (CSS-N-1)
SY-2 (FL-2, CSS-N-5)
SY-1 (CSS-N-1)

Nothing revolutionary that you have claimed. Show me Chinese Anti-ship missile as sophisticated as the Shipwreck?

By the way, most of PLA's current electronic capability is Russian based. Such as the S-300 sams, ship board radars, etc.
 

Jeff Head

General
Registered Member
Sea Dog, I don't care if you have a billion ESSMs on your AEGIS destroyer. I have one word for you: illuminators. An AEGIS destroyer can't even handle more than 10 simultaneously incoming missiles.

Really ludicrous is denying this reality.
Roger, you are preaching standard Soviet era saturation missile attack doctrine. They were equiped to do so, realizing that their "Bears" were too slow, trackable, and vulenrable...which brough the Backfires into play. And they had a LOT of Backfires and were prepared to attack carriers in regimental strength in order to saturate the system.

That was their doctrine and the US designed the AEGIS system specifically to handle any level of attack up to and including that.

A CG has four SPG 62 illuminators and can bring, I believe, 3 to bear against any angle of attack. The DDGs have three each.

While it is true that theoretically it would take 8-10 simulataneous, terminal phase missiles to overcome any one of those in terms of its ability to use its SPG 62s and standard missiles to down them, that is far from the complete story.

First the US has developed and deployed cooperatiove engagement capabilities so now, the three vessels could hypothetically (and that is all you are talking about here) engage up to 30, depending on the grouping of the vessels in the battle group.

Next, any surviving missiles have to get through the RAM and Phalanyx systems, and though Phalanyx is good for the type of system it is, RAM is very, very good.

Finally, we have to include the electronic countermeasures the US employs, which are also very good and will be extremely heavy in that environment close in to the vessels.

An attacker will lose missiles in terminal phase to ALL of those and must account for them.

Lot's of parameters involved, but if the group is tightly situated around the carrier, then you are going to have to have well over30 simultanous, terminal phase missiles to be able to saturate the entire system it in that phase, maybe 40 or 45.

To do that and account for earlier missiles that would be shot down before terminal phase, and to account for aircraft that will be shot down before they launch...well, now, you are back to the Soviet style attack in order to overcome the entire system...attacking in regimental strength with beaucoup missiles slung under every aircraft...which of course will make them all the more visible and open to earlier attack.

And that is if there is just one CVSG. In all likelihood, there will be at least two operating together, if not three.

Such an investment to try and overcome that defense, particularly to find and track them until the strike aircraft are close enough, and then to engage and win through, will require a HUGE investment and a very risky one.

Very easily the investment might be made and lost without sinking or injuring any carrier. That possibility will have to be carefully weighed, because in either case, the US would then transition from an engagement to, for example interdict and defend Taiwan, to an offensive posture and retaliate against the nation and attack its naval and air bases, its ships, and its ability to continue to mount such attacks.

As everyone has said here...can it be done? Yes, it certainly has a chance if enough resource are thrown at it and they are properly coordinated.

Will China be able to mount such an attack? Right now, I think they could maybe throw together an attempt at a saturation attack like this, but it would totally stretch their resources and the chances for success will be farily low...which is to say, in the cost benefit analysis they probably will not risk it.

Even if you project forward a few years, the Chinese will certainly have more numbers and better equipment and may well have a better chance...but the US is not a stationary target and its technology (SM 6, potential direct energy weapons, etc.) in the next few years will be gauged to ensuring that a nation like China will not be willing to risk it...as the case most likely is right now.

It's a technological dance, it's a logistics dance, it's a it's a training dance, it's a battle damage and survivablity dance, it's a cost/benefit dance, and it's a historical dance where each side has to weigh its initial posture, what it is trying to accomplish, and what the likely consequences are.

Let's all hope it remains just a "dance".
 
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