You seem to have that confused with passive sensors, which actually just replace the limit of [Accuracy] with [Sensor].
No other dicepool benefit there at all.
You can choose which sensor functions go in a sensor array. Every array has 8 separate-but-connected sensors, and each sensor rating = the array's rating. The drone's Sensor attribute also = this rating.
Some of these sensor functions, namely imaging and audio devices, have available capacity (= to rating) that you can fill with enhancements, like smartlink, thermographic vision, or spatial recognizer.
(Hint: There's no rule against a sensor array with 4 cameras, 3 types of microphones, and an ultrasound all together at the same time.)
- Now, the sensor sections are kinda wonky, so expect some GM Fiat for the other specifics, like how only upgrading a single sensor interacts with Mod Points, what the standard array is for drones, and how much it costs to customize it while initially buying the drone. 'Cuz afaik, none of that is stated in the books.
Edit: Oh, btw, you know you can click "Modify " to edit your posts, right? There's no need to make posts one-after-another all about the same thing when you can just add it all to your earlier comment.
EDIT 2:
OH! I just realized what you must've actually been thinking of for bonus dice from targeting!
- The Target Device Matrix action. E-War + Logic [Data Proc] vs Willpower + Firewall. Net hits apply a bonus to shoot at that device for all guns / drones slaved to your RCC.
(added here 'cuz we've been off-topic for too many comments already)