probably you should watch tutorial tracks
as i remember it is said about it there
IR rocket doesnt radiates anything so your sistems cant see the launch
the best way is to push shift+Q when youre near the target and slow down your engines so the gas running out of them will have lower temperature.
or you should constantly turn your head an if you see white "tail" after the rocket or the launch flash and no signal from BEREZA just start pushing DELETE 2-3 times until rocketloses you. Attention is the only way. Good luck