Stealth clarification

[Song]

I've been working a little with the Stealth atribute on projectiles recently...and I've found out through experimentation that it's a 1-7 scale, like WMD and the like....but I've a few questions:

1. What detection range do each of the values from 1-7 give a projectile?
2. What benefit do the smaller values (larger detection range) give, when the detection range is actually bigger than the LRS?
3. Is the stealth system projectiles exactly the same as what's used by stealth-type armor?

[Song]

Poke? Hello? Anyone interested?

[stealthx]

I am supposed to be an expert on stealth technology but I don't know anything!
I think stealth for missiles is a counter for anti-projectile automatic devices.
For your question 2, isn't it the higher value the better, assuming the answer for question 3 is yes?

[Song]

I know how it works, but not the values. It's to make working out who is shooting at you a little harder (in the vanilla game, it's only used on Mines)