AN/APG-63 radar family
Military aircraft all-weather multimode radar family

The AN/APG-63, AN/APG-70, and AN/APG-82 are a family of all-weather multimode radar systems designed by Hughes Aircraft (later Raytheon) for the F-15 Eagle air superiority fighter. These X band pulse-Doppler radar systems are designed for both air-air and air-ground missions; they are able to look up at high-flying targets and down at low-flying targets without being confused by ground clutter. The systems can detect and track aircraft and small high-speed targets at distances beyond visual range down to close range, and at altitudes down to treetop level. The radar feeds target information into the aircraft's central computer for effective weapons delivery. For close-in dogfights, the radar automatically acquires enemy aircraft and projects this information onto the cockpit head-up display. The name is assigned from the Army Navy Joint Electronics Type Designation System.
AN/APG-63
The APG-63 was developed in the early 1970s and has been operational since 1973, and was installed on all F-15A/Bs. In 1979, it received a major upgrade and became the first airborne radar to incorporate a software programmable signal processor (PSP), and the PSP allowed the system to be modified to accommodate new modes and weapons through software reprogramming rather than by hardware retrofit. The APG-63 with PSP is one of the most important features that distinguishes earlier F-15 A/Bs from the F-15 C/Ds fitted with PSP, and with the exception of the final 43 (which are equipped with APG-70), all F-15C/Ds are equipped with APG-63 with PSP. AN/AWG-20 is the Armament Control System used in conjunction with APG-63 radars.
The APG-63 series is no longer in production but remains in service.
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