Lowkey i find it kinda funny/weird/annoying how the only difference is the AAM-3 has a lower rejection threshold.
So, like, a lower rejection threshold sounds good in theory, seeker turning off faster and all that. However, even with the 9M’s threshold, its turning off well before when it needs to. Since turning off early means that its turning off tracking when it could otherwise keep tracking.
Now, for why I find this funny/weird/annoying, is about how clutter rejection detection actually works IRL. Basically, it compares the waveform output signal of the seeker, but with a phase delay rotation of 180 degrees (or another multiple of 90, depending on if its done additively or subtractively). Then, by overlapping this previous signal with the current one, you can find when the signal you’re tracking is being disrupted or if theres multiple signals in frame.
However, once you have two seeker bands, this changes a bit, as now you can compare waveforms from different bands. Now, in a dual band system, there’s a few potential changes to how this filtering can be done. The first one being that there’s no change, and that it works the exact same way. There is no reason to do it this way as its more complex then other new methods, however even so it would see an improvement to single band, as it would allow for a higher threshold to be effectively used without falling for flares.
The other methods are where it gets more interesting. Basically, you can use the UV layer as a masking layer for the IR layer, instead of of the phase delayed signal. However, there are two potential cases from here, the first being that the UV signal is used as a gain mask for the IR signal, and the second is that the difference in signal output is used to deactivate the effective IR signal to the sensor. However, its also important to note in the case of the first case, that depending on how its wired, is that the UV mask may not shutoff the seeker in cases where the flares are too close to the aircraft that’s being targetted.
So, this provides us with four potential changes to the AAM-3’s IRCCM.
The first one being that it stays just tracking suspension, but with a raised rejection threshold, which would basically mean the missile wouldn’t turn off its seeker unless it was actually about to be defeated. Hence why I think its funny that it has a lower rejection in game, as the easiest method to get it closer to IRL would be to raise the threshold.
The second being that it gets tracking suspension + gatewidth.
The third, being that it would solely being gatewidth. While this sounds weird for a missile specifically said to have clutter rejection, if its assumed that the filtering is solely a UV gain mask, with no other failsafe shutoff, then this is the closest approximation of the behavior we would get. However, it is important to note that this would be much tighter then the effective gatewidth of normal gatewidth missiles, as instead of being IFoV, this would be down the minimum difference the filter can detect. So this would be much lower then current gate width, potentially down in the 0.2 degree range.
The fourth one, would be a new method introduction, where the missile’s range bands would automatically change based upon the detection of flares. IE, if a flare is found, it would lower detection in those bands, instead using only the UV band, which would potentially allow the missile to keep tracking the target through flares at closer ranges.
Now, for which one is the closest to how the missile would behave IRL? Its kinda hard to say, however given whats known about the missile, I personally believe either the second or fourth method would be most accurate, although its rather hard to say with a proper degree of certainty.