Interesting.
Would missiles employing passive detection modes be affected by this jamming? I read somewhere that newer missiles such as PL-12/SD-10 has passive modes that can home in on EW emissions without using the launch aircrafts radar or its own active seeker.
Electronics CounterMeasures (ECM) is broad in definition, so for proper context here, let us add the word 'active' for clarity's sake.
Active ECM is when there are transmissions intended to reduce the effectiveness of other transmissions. Active ECM can be preemptive or responsive. A 'beamrider' missile operate in the 'passive' mode, meaning it does not produce any transmissions for target discrimination but relies on the generosity of EM transmitters in the immediate area to lead it to a transmission source. If there are data on transmission signatures, the missile can be programmed to change direction towards the general direction of a particular signature, even if there are multiple transmissions/signatures in the area. But that is another issue/discussion altogether.
Remember...
The Lockheed Martin F-22 Raptor
...the AESA also analyses the enemy's radar and sends out a jamming burst to disrupt the lock.
The 'beamrider' missile does not transmit, so there is nothing to 'analyze' and to counter. So if there are no transmissions, be it from a seeking radar operation or from a responsive ECM operation, a missile in 'beamrider' mode will have nothing to go by.
Yet IR detection remains a factor that enemies will look to exploit, no?
EM transmissions are 'at will', meaning the aircraft can chose to transmit a radar or not, to talk or not. But if the engine is shut off, then the aircraft become severely limited in operation. That mean for now infrared emissions can be reduced but not eliminated. The method of reduction varies but the vulnerability remains, albeit in lesser degree.
There is a necessary context to the word 'reduction' here and it can be difficult to understand...
Fairchild Republic A-10 Thunderbolt II - Wikipedia, the free encyclopedia
Engine exhaust passes over the aircraft's horizontal stabilizer and between the twin tails, decreasing the A-10's infrared signature and lowering the likelihood that the aircraft can be targeted by heat-seeking missiles.
The A-10's engine exhaust infrared output is not being negated at the source, meaning the aircraft itself, but the infrared emissions have been made more difficult to 'view', in a manner of speaking, by the engines' placement. As the IR sensor moves from direct view to either sides or to below the aircraft, its IR detection has been 'reduced' and that is the proper context of the word.
It is very rare that an IR seeker will be in such direct view of an IR source, as in action movies situations rare. That is why IR seeker technologies are being constantly researched and upgraded whenever possible to exploit those high off-axis angles of detection, made worse because those engine IR sources are highly maneuverable themselves.