Brumby
Major
Actually AN/APG-80 was the first AESA radar built for the F-16 and equipped the UAE Block 60 F-16s. The USAF F-16C/D have the AN/APG-68 and 72 units are funded to receive the AN/APG-83.What is perhaps more surprising is how long it took for the USAF to finally take the decision to upgrade it's existing fighters with technologies that have existed for nearly a decade. Prior to this I thought that the newest of the F-16s came with AESA radar and that the F-15 to have comprehensive ECM installed already.
The AN/APG-83 radar was first tested on an F-16 at Edwards AFB in 2010. This radar upgrade was meant as part of the planned Combat Avionics Programmed Extension Suite (CAPES) program in 2013. It was however cancelled the following year in order to fund the SLEP. The CAPES program included not only the radar, but high-resolution, multifunction color displays, an upgraded AN/ALQ-213 electronic warfare suite and an integrated broadcast system (IBS). The latter piece of equipment was designed to collect, correlate and display data from off-board data links and the aircraft’s own sensors.
Plans for a replacement radar system were resurrected in March 2015. The resurrected program will initially replace the AN/APG-68 mechanically scanned radar on ANG F-16Cs that make up 56% of the nation’s aerospace control alert (ACA) fighter force with the Northrop Grumman AN/APG-83. Contract of $244m was awarded to Northrop Grumman to provide 72 systems in June 2017. Another 300 F-16Cs remains under consideration.
Further electronic upgrades will equip the Pre-Block fleet with a new communications suite, a Hybrid Flight Control Computer (HFLCC), AGCAS and replacement of the MIDSLow Volume Terminal (MIDS-LVT) with the MIDS-Joint Tactical Radio System (MIDSJTRS). Additionally, ANG and AFRC F-16s will be the first to get Rockwell Collins Digital GPS Anti-Jam Receivers (DIGAR) that will provide reliable navigation in contested electromagnetic environments.
The main reason for the seemly slow and ambivalent interest in upgrading the F-16 is because priority was to equip the USAF with F-35As rather than to upgrade the F-16. Unfortunately because of slippage with the JSF program some upgrade is deemed necessary to bridge the transition to a 5th generation force structure.
The "Golden Eagle" upgrade path was to keep around 179 frontline F-15Cs tactically relevant with the new AN/APG-63(V)3 AESA radar, Link 16 data-link connectivity, Sniper targeting pod, Advance Display Core Processor (ADCP) II, and IRST.
Cockpit display upgrade include a 9X11 inch night vision compatible, colour multi-function display screen with a resolution of 1024X768. It can show multiple video channels and instrumentation feeds, including a number of them at one time, via multiple windows. It also can overlay instrumentation or tactical data on a video feed.
EPAWSS was meant to replace the F-15C's RWR and obsolete AN/ALQ-135 Tactical Electronic Warfare System (TEWS) and would be a quantum leap in combat capability and survivability. The Eagle Passive/Active Warning Survivability System (EPAWSS) is able to geolocate threat emitters and use various electronic warfare tactics to counter them, allowing the F-15 to penetrate through contested airspace. The system would need to display this info in a situational manner and would fit well with the new cockpit display.
The current TEWS is made up of :
AN/ALQ-128 (EWWS)
An/ALQ-56 (RWR)
AN/ALQ-135 (ECM)
AN/ALQ-45 (Flare/Chaff)
These systems while very capable are progressively outdated because they are analog and to my knowledge not fully integrated. Modern threats like AESA radar with LPI features will seriously challenge them. EPAWSS is all digital, integrated, full spectrum channelised to operate in a dense electronic environment against all known and future threats.
The problem with having a conversation on ECM is the general public has very limited understanding of the subject. Not all ECMs are the same or have similar capabilities. It is like placing a Toyota and a Ferrari in the same group as “cars”.
Just on the subject of RWR the difference in tech level can be between:
- Analog
- Analog digital
- All digital
- Digital channelised
- Digital channelised (integrated)
For example, an analog system actually have to scan for threat emissions. A digital system doesn’t have to operate in a scan mode. Up to until AN/ALR-67(V)3 came along, RWR typically did not have ranging capability. It means it can only detect bearing but not distance and so the threat nature cannot be established. The angular inaccuracy was as much as 30 degrees. The ALR-67 brings with it down to 1 degree. This has a significant bearing on geolocation to determine CEP accuracy especially in stand-off ranges.