> rely on always-on active radar which means you're lighting yourself up.
Because these systems have to work in formation without interfering with each other, they use pseudo random noise like signals and correlation based receivers. They're also mmw systems working at short range. It's not quite the suicidal beacon you're assuming, because it ends up the folks who design this stuff are in fact aware of the principle of emissions control.
Yeah of course they try to reduce the emissions as much as they can within physics. But the appetite for any emissions is extremely low in a peer or near-peer fight.
Because these systems have to work in formation without interfering with each other, they use pseudo random noise like signals and correlation based receivers. They're also mmw systems working at short range. It's not quite the suicidal beacon you're assuming, because it ends up the folks who design this stuff are in fact aware of the principle of emissions control.