Their version of radar; it sounds like it’s pronounced “dray-dus”; what is it, how is it spelled, what does it stand for?
It’s apparently some sort of sensor array. It isn’t the same as radar because in The Hand of God Starbuck says something like “we’ll jump in at extreme radar range” so they apparently have radar as well. (Or, the actress made a mistake and no one caught it.)
I belive it is spelled “dradis”. Dunno what it’s supposed to stand for.
Probably an ancronym? D.R.A.D.A.S. = Dectect, Range And something something something?
DRADIS = Direction RAnge DIStance.
From here (don’t know how to specify exact location on a page, so you’ll have to search for DRADIS once you get there).
Many belated thanks (I was out of town, and just read this today).