AN/APG-71 Fire Control Radar
The AN/APG-71 is a pulse doppler, X-band multi-mode radar used in the F-14D aircraft. The AN/APG-71 Radar replaces the AN/AWG-9 Radar used in the F-14A/B and has fewer Weapon Replaceable Assemblies (WRAs), thereby reducing both weight and space requirements. The functional expansion is achieved by replacement of AN/AWG-9 analog processing hardware with more flexible digital processing. Major changes were made in the following areas: Signal Processor, Data Processor, Digital Display, Central Processor, Receivers, and Antenna configuration.
In 1984, the first major system upgrade to the Grumman F-14 began. The F-14D was designed to be a tremendous improvement over the original F-14A. Its engines, a marinized version of the General Electric Fl10, offered a 30% increase in combat rated thrust as well as greater flexibility and maintainability. The F-14D also contained a new digital avionics package and the improved Hughes APG-71 radar for increased detection and targeting. The entire package of upgrades would allow the F-14D to perform its air superiority mission for the fleet well into the 21st century. The installation of a new AN/APG-71 radar in the F-14D offered a six-fold processing improvement over the F-14A's analog system and improved target detection and tracking capabilities in a heavy enemy electronic countermeasures environment by 40 percent. The Hughes APG-71 digital signal processing radar not only used seven of fourteen weapon replaceable assemblies from its analog AWG-9 radar derivative but also utilized many of the improvements developed for the USAF F-15 multi-stage improvement program.
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