Consisting of a terahertz pulse-transmitter, receiver, and highly advanced processing unit, this unit computes differences in the Doppler shift between the user and the surrounding area, within a twenty-meter radius. This allows the user to view a three-dimensional map of the area and the elements contained therein, if in a vague, blocky manner. The radio pulses are able to pass through most solid matter, allowing the user to “look” through walls, clothes, and similar obstructions to see the outlines of what lies beyond. While individuals cannot be recognized at the resolution of the processing, shapes can give some suggestion of what items might be (tables, guns, balls, and so forth). The system is excellent at detecting motion, calculating exact distance (when combined with a math SPU), and accurately overseeing floorplans and the locations of persons and objects in that area. It is somewhat complex to sift through the data for a proper reading (a Simple Action is required), and while it can ignore Invisibility spells (but not Improved Invisibility spells) and many camouflage methods, it cannot discern color, lighting, or texture.

The radar sensor uses the same Visibility modifiers as ultrasound but can penetrate a cumulative Structure Rating equal to its own Rating x 5. Thus, a Rating 2 radar sensor can penetrate two Rating 5 walls, or a single Rating 10 wall, or three Rating 3 walls, etc. Radar systems are especially vulnerable to jamming and noise, suffering double the usual disruption. Radar pulses are detectable by any wireless device, but most won’t be able to identify them as anything more than background noise.