They use the Coyote target missile that goes at mach 2.6 at very low altitude and mach 3-4 at high altitude.
It simulates russian supersonic missiles much better than the old soviet missiles used as a target simulate western missiles during russian tests.
It is essentially a Kh-31 attached to the same booster rocket used for the Standard naval SAMs in the long range versions.
The Coyote target was created after they got their hands on Kh-31 and is a copy... and mach 4 my arse... why would they describe it as a mach 3 target if it can go mach 4?
Mach 3 is the speed the Kh-31 moves at BTW... perhaps mach 4 is to pretend they made any changes to it at all...
The original competition for a new target missile was written specifically in the hopes of getting the Russians to offer Moskit, which is what they really wanted to get their hands on. Russians weren't that stupid... they offered an early model Kh-31 knowing it met all the criteria of the competition and was superior to the proposed American alternatives that existed mainly on paper.
It was like Russian rocket engines... they were not happy buying them because they were sure American technology and knowhow could do better, but there wasn't anything better.
The solution has been a copy of the Soviet missile mounted on a standard US solid rocket booster used for long range Naval SAMs for the past few decades...
Their target used for training is their most potent anti ship weapon...
Official number. 680m/s at low altitude which is mach 2. Maybe you should stop drinking your own propaganda.
For the export model. The domestic model will have other penetration equipment like jammers and decoys it can deploy and of course it will be manouvering... and most likely the warhead will be armoured.
It translate to match 5+ at 24+ km high.
With new high energy fuel then possibly, but not likely deployed yet.