Ah okay. I was looking at the second version you posted which when run without high fidelity mode the missiles still miss even though their targets are with the appropriate altitude. I ran the first scenario and it's definately related to the target altitude being too high. When the missiles get close , they start turning around, but shortly after they start turning around, another determination is made that drops their targets, once that happens, they just fly off straight.
It looks like they turn to fly towards the point where the target will be in 1 second (around 1.5nm ahead of the incoming missiles). Once it's within +- some number of seconds (I think it's 2 seconds or about 3NM out against these targets) of intercept, I think the determination is made whether to intercept the target or not, but since the targets are above the max altitude for the RIM 154A, the missiles do not intercept, instead they start turning around to continue flying to where the missile will be in 1 second.
Although after more experimentation it seems that the missiles are not using datalinks at all for guidance since the targets are well within seeker range. The reason for the problems without high fidelity mode in the second scenario is related to the timing at which the targets cross under to a valid altitude for intercept, being after the interceptors are well under 4nm from their target, meaning the missiles against the first few incoming miss their chance to intercept due to insufficient temporal resolution, this coupled with the fact that the AN/SPG-62 can only illuminate 4 targets, a reluctance to release the illumination from the first incoming missiles when the interceptors miss, and the lack of ticks in which it can change the illumination target for the remaining illuminators once missiles do start intercepting means that most of the RIM 154A pass by blind.
PS: I miscalculated the vertical speed of the incoming targets. Given that they are decending at nearly 2000 meters per second with a total velocity of 3000 meters per second, then it's possible that the RIM-156A are leading the targets by flying the shortest intercept to target rather than leading by a fixed 1 second. When calculated in 3D, the incoming target has quite a distance to decend, and the RIM-156A has quite a distance to ascend to reach that intercept, so the location it has to fly to becomes behind the interceptor at about 1-2nm. I know that during terminal phase, active radar homing missiles do not lead their targets significantly, but instead fly a straight in approach, but SARH missiles may.
< Message edited by Zanthra -- 3/17/2019 11:18:01 PM >