A typical DRADIS read-out

DRADIS, or "Direction, RAnge, and DIStance", is a highly sensitive detection, identification, navigation and tracking system, analogous in function to radar, used aboard Colonial spacecraft.

DRADIS can be used in stationary configurations as well on ships.

Carbon composites are largely invisible to DRADIS scans.

A DRADIS contact is an object or objects detected by DRADIS. Contacts are typically identified by cross-referencing with an IFF system (in the case of ships) or an astronomical database (in the instance of planets or other celestial bodies).

The symbols used on Colonial DRADIS displays for the representation of battlestars, Raptors, and Vipers are visible in the picture to the right.

Dradissymbol pegasus

DRADIS symbology for various Colonial Fleet units

Radalm 217 1080i

DRADIS warning of radiological materials

DRADIS is also used to report radiological alarms.

DRADIS is likely a central component of the navigation computer on Colonial ships such as battlestars, as they do not navigate in sublight mode by visual means.

The DRADIS can be blinded by external sources of electromagnetic radiation such as artificial radiation by EMP generators, nuclear detonations, pulsars, star clusters and binary stars, or other phenomenona such as the nebulae.