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TVM FCR radar RWR or not?

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TVM FCR radar RWR or not? - 9/6/2021 5:58:14 PM   


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In my experience playing the game, TVM FCR like the Flap Lid for S-300 or the MPQ-53 for the Patriot turn red when they launch a missile. Is this realistic: would they really give their intention away as soon as a missile is launched?

In TVM, the ground radar (tracking radar) tracks both the missile and the target, and sends commands to the missile to steer it towards the target. As the missile gets closer to the target, its seeker begins to pick up echoes from the tracking radar, and these are retransmitted to the ground radar in order to better steer the missile to the target. At what point, if any, will the tracking radar change its radiated waveforms that would distinguish it from normal search&track pings and trigger RWR? Could it not continue to radiate the same search&track pings all the way?

I don't know the source of this claim, but the Wikipedia article on TVM claims the following:

One additional advantage of TVM is that, as there is no tracking radar, there is nothing to indicate to the target that it is being tracked. This is normally a relatively simple task for a radar warning receiver that gives the target a warning that it should employ countermeasures, but in the TVM case the search radar signal is all that is needed and it does not change when the missile is launched.

This is somewhat similar to the description given by a Jane's article on the Patriot air-defense system:

TVM is a hybrid of traditional semi-active radar homing and command guidance. The main advantage of the TVM approach is that the target is less likely to know it is being engaged because although it is aware it is being illuminated by a ground radar, it is not being illuminated by a missile and so cannot readily discern whether it is being tracked or is being engaged. As Patriot utilises a single radar for search, acquisition, targeting, and guidance, it can be difficult for a target to discern what stage in this process it is being illuminated for, increasing the reaction time and therefore the system’s chance of a hit.


< Message edited by MaxDemian -- 9/6/2021 6:08:05 PM >
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