AN/APG-79 radar

AN/APG-79 radar
Name	AN/APG-79
Country	United States
Manufacturer	Raytheon Technologies
Introduced	2007
Type	Active electronically scanned array (AESA) radar

AN/APG-79 radar The AN/APG-79 radar is an X-band active electronically scanned array (AESA) airborne radar developed for multimission fighter applications, integrating advanced digital beamforming, solid-state transmit/receive modules, and open-systems avionics. Designed and produced by Raytheon, the system supports air-to-air, air-to-ground, electronic warfare, and situational awareness roles for contemporary combat aircraft and has been fielded on platforms such as the Lockheed Martin F-35 Lightning II and Boeing F/A-18E/F Super Hornet. Its development reflects collaboration across the United States Department of Defense, the Naval Air Systems Command, and industrial partners during post–Cold War modernization programs.

Development and Design

Development began as part of modernization initiatives led by the United States Navy and industrial consortia including Raytheon Technologies and legacy Hughes Aircraft Company teams. Design goals were set in response to requirements articulated by Naval Air Systems Command, Office of the Secretary of Defense, and operational feedback from Carrier Air Wing squadrons after deployments to Operation Iraqi Freedom and Operation Enduring Freedom. The program drew on technologies matured in programs such as the AN/APG-63(V)3 and research from the Defense Advanced Research Projects Agency and university laboratories at Massachusetts Institute of Technology and Georgia Institute of Technology. The APG-79’s architecture emphasizes modularity influenced by the Open Systems Architecture concepts promoted by Defense Acquisition University and interoperability standards aligned with Joint Tactical Radio System initiatives. Key industrial partnerships included subcontractors in the Aerospace Industries Association supply chain and testing at facilities like Patuxent River Naval Air Station and Eglin Air Force Base.

Technical Specifications

The AN/APG-79 employs an AESA aperture operating in the X-band frequency allocation managed by the Federal Communications Commission for aeronautical services and compliant with spectrum policies of the International Telecommunication Union. Its transmit/receive modules use gallium arsenide and gallium nitride semiconductor technology pioneered in research at Sandia National Laboratories and Lawrence Livermore National Laboratory. System attributes include digital beamforming similar to concepts from the Phased Array Radar lineage, pulse-Doppler processing derived from algorithms tested at Lincoln Laboratory, and mean time between failure (MTBF) improvements driven by Defense Logistics Agency sustainment metrics. Cooling and power subsystems were specified to meet standards published by the Institute of Electrical and Electronics Engineers and certification testing coordinated with Underwriters Laboratories and the Federal Aviation Administration for airborne electronics.

Operational Capabilities and Modes

Operational modes incorporate long-range detection and tracking capabilities informed by tactics developed at Naval Air Station Fallon and sensor fusion techniques championed by the Office of Naval Research. Air-to-air modes include wide-area search, track-while-scan, and high-resolution targeting used in conjunction with weapons approved under Navy Air-to-Air Missile programs and coordinated through datalinks like Link 16 and Link 22. Air-to-ground modes provide synthetic aperture radar (SAR) imaging, ground moving target indication (GMTI), and precision targeting feeds compatible with munitions certified by U.S. Navy warfare centers and integrated into mission planning systems developed by Northrop Grumman software teams. Electronic support measures and low-probability-of-intercept techniques reflect signal-processing advances from collaborations with Oak Ridge National Laboratory and Johns Hopkins University Applied Physics Laboratory.

Integration and Platforms

Primary integration was with the Boeing F/A-18E/F Super Hornet for carrier-based strike and air superiority roles, with qualification flights conducted at NAS Patuxent River and squadron operational testing with Strike Fighter Wing Atlantic. The radar was adapted for installation on other platforms in coordination with prime contractors such as Lockheed Martin and avionics integrators including Honeywell International and Rockwell Collins. International sales and cooperative programs involved defense ministries such as the Royal Australian Air Force and procurement offices like Australia Department of Defence, enabling interoperability with allied platforms participating in exercises hosted by United States Pacific Command and NATO contingents.

Operational History and Deployments

The APG-79 entered service in the 2000s and saw operational deployment aboard carrier air wings assigned to USS Nimitz (CVN-68) and USS Abraham Lincoln (CVN-72), supporting missions during carrier strike group operations and expeditionary deployments to the Persian Gulf and Western Pacific. Units equipped with the system participated in multinational exercises such as RIMPAC and Red Flag, and contributed to coalition operations coordinated through CENTCOM and PACOM task forces. Reliability and mission effectiveness were evaluated in reports to Congress and audits by the Government Accountability Office, influencing subsequent funding decisions and upgrade paths overseen by Program Executive Office Air ASW, Assault & Special Mission Programs (PEO). Export clearances involved reviews by the United States Department of State under the International Traffic in Arms Regulations framework.

Upgrades and Variants

Variants and modernization efforts have focused on increased module counts, incorporation of gallium nitride devices, software-defined radio interoperability, and reduced size, weight, and power (SWaP) metrics to enable retrofit on newer airframes. Incremental upgrades paralleled initiatives such as the AESA Modernization Program and were coordinated with avionics suites from General Dynamics and mission computing architectures adhering to Navy Open Architecture standards. Export variants were negotiated with partners including Boeing Australia and tested in combined exercises with forces from Japan Self-Defense Forces and the Royal New Zealand Air Force. Continuous upgrade cycles remain subject to approval by acquisition authorities at Naval Air Systems Command and budgetary allocations from Congressional Armed Services Committees.

Category:Aircraft radars