Laser IRCM works by destroying the seeker via overexposure, not by making the vehicle “invisible” behind the laser beam.
Damn… u turn out to be trolling lol
Well when the seeker looks, there is a massive laser in its face, which is hugely hot, what can the seeker see? Nothing.
It uses a defocused, detuned quadrant type seeker to provide angular tracking of the target to home on jam it works in effect the same way Inverse monopulse seekers do, where angular corrections are provided by comparing the energy in the four quadrants.
https://www.tesble.com/10.3390/s18061673
You do get that the most common MANPADS are not in any way modern So these advanced systems are overkill for most threats that are to be expected outside taking on a peer threat, which is why for example the ALQ-144A stayed in service until the mid 90’s.
That takes far too much energy to be possible in a helicopter form factor (on the order of 10’s of kilowatts) let alone within the timeframe of Short range missiles especially for quoted minimum ranges of 500 meters that Stingers for example would clear it in ~1.8 seconds, what it’s doing is injecting a specific jamming waveform into the seeker which drives it off target.
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Yeah, u didn’t actually thought I was gonna say 12.7 vs Vikhrs or what ever gun they had.
Or did u?
The IRIS-T has a small seeker which only exposes itself for miliseconds as it scans across and takes a whole image but uses a smaller over all size.
Not only is this better for IRCCM but also cheaper
I didnt. But i asked.
You said yes.
Well doesn’t explain AH64E. Cause they do work.
it will take a look, but whether or not it sees anything is a different issue. The laser if hommed in will try to disrupt the lock.
In what way?
It exists because systems have advanced sufficiently to permit it to be employed, and as a Coherent source and with passive missile detection. it is a covert system so is much better than the earlier incoherent sources which need to always be on (for the most part) to be effective.
https://www.tesble.com/10.1117/12.869848
https://www.tesble.com/10.1117/12.2067264
Against what threat specifically?
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A good paper to read about IIR vs LDIRCM
https://www.researchgate.net/publication/284156197_Requirements_for_laser_countermeasures_against_imaging_seekers
Basically you pretty much need a DEW weapon to ensure total protection, the paper explains that even if the seeker is mostly saturated it can still home on jam, the laser would need to be powerful enough to encapsulate the whole seeker while projecting enough energy that a gradient isn’t available for the seeker to form a basis for home on jam. At which point the LDIRCM would become a DEW anyway.
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Stop it with your fact based comment, @141_allen is trying to spread the glory and superiority of russia !!!1111!
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Well, they are the few nations that don’t have fnf missiles on heli so I suppose it’s kinda fair to give them (L)DIRCM, but giving them fnf weaponary would be a better option.
BTW US heli now has neither LDIRCM nor FNF missiles, I do feel sorry for US mains.
That was just on DIRCM, not Mi28NM, in other ways, AH64E also mounts a much similar system. I am not a RUssian, nor do I play Russia, all I am pointing out is 1. IRIST is not immune to such systems, 2. it is not entirely unrealistic for them to be able to fend off IR missiles, but as I said right at the top, it should be down to chance and no one knows what it is IRL or will be in game.
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Regarding that study, that is why I said it is down to chance.
Also just to say one thing, the paper calculated the irradiance of a maximum of 100 Watts when we are looking at 4kW already back in 1980s.
Here is the example of the dazzle IRL, HOJ is available, however, depending on the size of dazzle, this will be less effective when closer up, and with flares more areas will be saturated.
My bad bro I misinterpreted and had thought the rounder one was the LDIRCM, I did some research and you are right
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Fact still is that not even the producers themselves expect it to be effective against IIR.
Almost all missiles considered to be 4th generation and beyond use IIR seekers, except the R-73 but it has an enhanced FOV that may give it resistance against DIRCM.
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Thats not the only method DIRCM resistance works. The seeker can guide off a brightness gradiant where the dazzler/laser is at the brightest point.
IE: it just tracks the laser source directly until it "see’s its initial target again.
There is an upper limit to that. And as seen from irradiance, that too increases with range. Afterall it just depends on the power, if high enough it can definitely saturate the seeker.
You cant fully obscure a IIR seeker with lasers, you have kill the seeker, these missiles can home on jam, and as long as psrt of the silhoutte remains expoaed which always happens they can retain accuracy
