AN/APQ-180
The APQ-180 is a derivative of the APG-70 radar, designed for installation on the AC-130U gunship aircraft (Rockwell/Boeing modification). It uses a modified gimbaling scheme for the planar array, and an upgraded analog signal processor unit, and incorporates several enhanced (and new) air-to-ground modes.
Read more about this topic: APG-63 And APG-70