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AN/APG-77
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| Country of origin | United States |
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| Type | Solid-state active electronically scanned array (AESA) |
| Azimuth | 120° |
| Power | 12kw peak |
The AN/APG-77 is a multifunction radar installed on the F-22 Raptor fighter aircraft. The radar is built by Northrop Grumman.
It is a solid-state, active electronically scanned array (AESA) radar. Composed of 1500 transmit\receive modules,[1] each about the size of a gum stick, it can perform a near-instantaneous beam steering (in the order of tens of nanoseconds).
The APG-77 provides 120° field of view in azimuth and elevation. The highest Field of View (FOV) for a flat phased array antenna is currently 120°.[2]
More than 100 APG-77 AESA radars have been produced to date by Northrop Grumman, and much of the technology developed for the APG-77 is being used in the APG-81 radar for the F-35 Lightning II.
The APG-77v1 was installed on F-22 Raptors from Lot 5 and on. This provided full air-to-ground functionality (high-resolution synthetic aperture radar mapping, ground moving target indication and track (GMTI/GMTT), automatic cueing and recognition, combat identification, and many other advanced features).[3]
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