Following is a an article from
August 2020 edition of
Airforces Monthly. It highlights in detail the net-centric capabilities that F-35 brings to the battlefield, enhancing the situational awareness of battlefield and strategic commanders many folds.
Mods, since this is a copy/paste feel free to delete if it violates any copyright guidelines.
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Information Warrior
The Lockheed Martin F-35 Lightning II is the most connected fighter ever. It provides more data to the pilot, other aircraft and ground assets, for executing the fight, than any other aircraft in history
Last December two United States Air Force F-35A Lightning II flew high over the US Department of Defence’s White Sands Missile Range in New Mexico. Below them, two surrogate cruise missiles had been launched. The missiles’ target was a tactical command post operated by a US Army air and missile defence unit. These surrogate cruise missiles are able to mimic real cruise missiles and follow the terrain to hide from radar and other ground-based sensors, but that would not help them. The F-35A’s sensors detected the two surrogate missiles and its information was shared with the army’s missile defence unit. It is this networking capability that makes the Lightning II (renamed ‘Adir’ in Israel) special. All three types of the F-35 can fly supersonically and supercruise, both capabilities seen decades before on fast jets. These F-35s are difficult for radar to detect and keep track of with a low observable design, materials and radar-absorbing coatings. But it is not the first. The Lockheed Martin F-117 Knighthawk and the Lockheed Martin F-22 Raptor are both stealthy and they both have internal weapons bays, like the F-35. The Knighthawk was retired in 2008 and the F-22 achieved initial operational capability in December 2005.
The Raptor, however, while having many of the capabilities of the F-35, was not designed to the same degree with multi- domain networking in mind. In the missile defence exercise last December, that F-35A sensor data was sent to the army’s Integrated Air and Missile Defence (IAMD) Battle Command System (IBCS), developed by Northrop Grumman. The F-35A used its Multifunction Advanced Data Link (MADL) to connect with the IBCS. Available ground sensors, including the Raytheon Patriot weapon system and US Marine Corps TPS-59 radars could also feed their information into the IBCS. The air defence unit soldiers at the tactical command post receive the ICBS data on screen giving them a complete picture of their surroundings.
The F-35 data helped the soldiers identify the incoming cruise missile surrogates and launch two Patriot Advanced Capability (PAC)-2 interceptor missiles. The sensor data from the F-35 and other assets feeding the IBCS also provided in-flight updates as the interceptor missiles converged on their targets and ultimately destroyed them. “Information is ammunition, and IBCS is providing soldiers with more,” said Northrop Grumman IBCS programme director, Mark Rist in the company’s announcement about the test’s result. “It was the first [development test] including joint operations with the Air Force F-35 and Marine Corps radar systems.” In Lockheed Martin’s statement on the test, the company’s vice president and general manager of the F-35 programme, Greg Ulmer, said: “This test validated the F-35’s capability to serve as an airborne sensor and extend the range of critical integrated air and missile defence interceptors.” Ulmer added that the F-35’s sensors and connectivity enable it to share critical information with the, “joint fighting force to lead the multi-domain battlespace”. Multi-domain is the key phrase. The F-35 is able to operate in one domain, the air domain, and use the space and cyberspace domains to link with ground and sea-based assets to defeat an enemy. The F-35 is operated by a number of NATO member states and the alliance describes the aircraft as a “force multiplier”, which requires, “a realignment of tactics, techniques and procedures for Allied Air Command as NATO is establishing principles for modern aircraft integration,” NATO said.
The alliance
The alliance explained that with the enhanced situational awareness and integration capabilities of platforms, such as the F-35, air power, “will be characterised by collective operation and interoperability
of existing and modern aircraft”. Information on how the F-35 networking capabilities are used “is classified”, NATO said. “It’s about information, it’s about data, it’s about analysing and acting on it faster than an adversary can react,” the then USAF chief of staff Gen David Goldfein told his RAF guests in Washington, DC in October last year. The Royal Air Force (RAF) is a participant in the F-35 programme and its personnel were attending an annual USAF/RAF meeting, which included RAF ACM Mike Wigston. At the meeting, held at Georgetown University, Goldfein also explained that to win requires data, networks and the linking of allies’ systems.
The importance of information technology and interconnected networks, the origin of the name ‘Internet’, in the military sphere is now well understood. It is called network-centric warfare and the F-35’s capabilities are
designed for it. In late 1993, when the DoD’s Joint Advanced Strike Technology (JAST) programme began, the cyberspace domain was simply the World Wide Web, which few people used. That JAST programme became the Joint Strike Fighter (JSF) programme in 1995 and its fighter would be called the F-35 (see ‘F-35 Joint Strike Fighter programme’ panel). The F-35 can network from anywhere, as it is the first
fighter to possess a satellite communications capability, it can send and receive information within the space domain. This satellite connectivity works with the aircraft’s other data links, allowing the F-35 to share data with other strike aircraft as well as other airborne, surface and ground-based platforms. One of the datalinks at the heart of this capability is MADL, a high- data-rate communications link between F-35 aircraft and other military assets.
MADL is a key capability provided by Northrop’s communications, navigation and identification (CNI) avionics. The CNI, according to the F-35 JSF programme, is the most advanced integrated avionics system ever engineered. Developed by Northrop Grumman, the CNI provides F-35 pilots with the capability of more than 27 avionics functions. These functions include identification friend or foe, precision navigation, and various voice and data communications. These technologies, the F-35 JSF programme states, mean the Lightning II can serve as a communications gateway for other platforms. For communication with other aircraft the Lightning II uses the Link 16 data link, the single channel ground and airborne radio system and secure ultra- high, very high and high frequency radios. NATO said: “National air forces will benefit from a higher quality of data provided by the F-35, compared to current platforms. NATO will also draw on these benefits as the F-35s become more and more integrated into NATO air power operations.” The information the F-35 can share with other platforms in other domains comes from its sensor suite; the active electronically scanned array (AESA) radar, electro-optical targeting system (EOTS) and distributed aperture system (DAS).
Next-generation radar
The F-35’s radar is the AESA Northrop Grumman AN/APG-81, which the company calls, “multi- mission”. The Lockheed Martin F-16 Block 70 Fighting Falcon uses the Northrop Grumman AN/APG-80, and in 2004 the Raptor was using the fourth- generation variant of the AN/ APG-77 AESA radar. The AN/APG- 77 adopted elements of the AN/ APG-80 and the 81 to improve it. The F-35’s multi-function AN/ APG-81 radar can engage air and ground targets at long range. The F-35’s AESA radars also have electronic attack capabilities, including false targets, network attack, advanced jamming and algorithm-packed data streams. These electronic warfare capabilities enable the F-35 to locate and track enemy forces, detect radar emitter locations more easily and jam radio frequencies and suppress enemy radars. The F-35 has 10 times the effective radiated radar power of any legacy fighter, according to the F-35 programme. The programme also states that, “research indicates that adding more F-35s in a high-threat environment is far more effective than adding more single-mission, electronic attack support aircraft”. The F-35’s electronic warfare capabilities use the BAE Systems’ AN/ASQ-239 system. It provides fully integrated radar warning, targeting support and self- protection, to detect and defeat surface and airborne threats.
BAE says that the AN/ASQ-239’s avionics and sensors provide a, “real-time, 360-degree view of the battlespace, maximizing detection ranges and giving pilots evasion, engagement, countermeasure, and jamming options”. While the AESA radar can detect threats and targets over the horizon, the internally mounted EOTS can detect long-range air- to-air threats and enable precision targeting against ground targets. Located behind the durable sapphire windows that can be seen on the underside of the F-35’s nose, EOTS’ electro-optical technology uses short-wave infrared (IR). It can search for and track IR targets and mark those targets for a missile to find them using an eye-safe laser. EOTS is linked to the aircraft’s computer by a fibre-optic interface. Provided by Northrop Grumman, the AN/AAQ-37 DAS is also an IR electro-optical technology. DAS uses six polycrystalline silicon, low-observable, infrared transparent windows for the
IR sensors situated around the aircraft to provide a 360-degree view around the aircraft. This 360-degree view is stitched together by the aircraft’s computer to provide a picture anywhere the pilot looks. DAS can detect missiles’ launch and ascent, aircraft and ground targets, anything with a heat signature. DAS can also create a night vision like image (see ‘Pilot’s world view’ panel). All these sensors and networking capabilities are allowing the F-35 to locate a target for units, such as the artillery. In 2017, USMC Lockheed Martin F-35B Lightning II aircraft were involved in the Dawn Blitz exercise to direct rocket fire for the first time. According to a US Defence department article about Dawn Blitz, the exercise saw an F-35B co-operate with a ship-based high-mobility artillery rocket system that struck at a target about 43 miles (70km) away. During the exercise, the F-35B also provided electronic warfare, aerial reconnaissance, anti-air warfare and offensive air support. Last year, in November, the USAF and the 1st Armored Division Artillery trained together in Dona Ana, New Mexico as part of the F-35 programme’s joint strike fighter integration testing. A USAF F-35A flew just below 30,000ft over the test range. Maj William O’Neil, a fire support officer for the armoured division said in the DoD statement: “We are working with the air force and we are testing the ability of the US Army’s field artillery to receive messages from an F-35… for possible fire missions.” He added that, while they were using artillery on that occasion, “the goal is how we integrate a [Raytheon] Tomahawk cruise missile and other missile units at the division level into joint fires,” by which he means co-operatively attacking a target.
Project Riot
In September last year, Lockheed Martin announced that an F-35 had detected a long-range missile launch and shared the information through a Lockheed Martin U-2 Dragon Lady to an air defence commander on the ground. The exercise was the latest in a series of demonstrations to prove the F-35’s multi-domain networking capabilities. Networking demonstrations go back to 2013 and Project Missouri; the 2019 exercise had been called Project Riot. “The initial [2013] tests were focused on connectivity between platforms,” said Lockheed Martin Aeronautics F-35 development vice president, Jim McClendon. 2019’s Project Riot involved Lockheed Martin Skunk Works, the US government’s Missile Defence Agency and the USAF to securely distribute the sensitive missile launch information across multiple platforms to a “multi- domain ground station”, as Lockheed described it. McClendon explained: “The focus of the more recent (Project Riot) tests was on interoperability and integrating F-35 information into off-board C4ISR [Command, Control,Communications, Computers, Intelligence, Surveillance and Reconnaissance] systems.” According to Lockheed Martin, this level of connectivity reduces the “data-to-decision timeline from minutes to seconds”, to allow combat commanders to make quick decisions.
The defence firm refers to open systems architectures and distributed, system-of-systems architecture – it is within these that the networked F-35 operates. The US military and its contractors also see such architectures as the method to rapidly field increases in capability. Project Missouri in 2013 linked Raptors with the F-35. In 2015, Project Iguana linked an F-35 to F-16s and a U2, fifth- to fourth- generation platforms. Project Hunter in 2017 connected the same aircraft and a satellite. That project demonstrated collaborative weapon retargeting and covert assured communication Project Riot showed how to leverage F-35 sensor information for missile defence and that a, “multi-domain network of legacy and fifth generation systems,” could be realised. In a similar exercise held this year, an F-35 received data from a U-2 acting as an airborne relay. This was part of an Orange Flag Evaluation exercise involving the army
and air force near Edwards Air Force Base. The F-35 also sent its intelligence, surveillance and reconnaissance data to an IBCS. It was another example of how the F-35 could support all-domain joint operations, which means ground, air, sea and space assets co-operate and use cyberspace as a method for sharing information. The F-35’s substantial sensor suite with broad bandwidth connectivity to satellites and other aircraft are capabilities that will find their way onto other platforms. The Boeing F-15EX is an evolution of the Boeing F-15 Eagle and it will be a connected aircraft. Boeing states that the F-15EX will be able to: “operate independently when isolated and reconnect with the global cloud when conditions permit”. The USAF’s Next Generation Air Dominance (NGAD) fighter programme envisaged a networked platform and NGAD concepts also use directed energy weapons. The navy has also referred to its future fast jet platform as NGAD. Last year, on October 2, the USAF stood-up the Programme Executive Office (PEO) for Advanced Aircraft. This new office will transform the NGAD programme into the Air Force’s Digital Century Series initiative. This initiative is about using all- digital design and manufacturing technologies to realise the NGAD platform and its capabilities.
The PEO will also be responsible for the Republic Fairchild A-10 Thunderbolt II, Boeing F-15 Eagle, Lockheed Martin F-16 Viper, Lockheed Martin F-22 Raptor, and the in-development, artificially intelligent, Skyborg drone.
There will be plenty of lessons to learn from F-35 for whatever comes next, NGAD or any other acronym. The US Congress’ Congressional Research Service May 2020 JSF programme report states that as the operational test and evaluation phase
on December 3, 2018 began there were, “873 unresolved deficiencies”. It stated that 13 of these are classified as “Category one ‘must-fix’ items that affect safety or combat capability”.
To whatever degree the networking capabilities of the F-35 actually work, it is still the most connected fighter ever and able to provide its pilot with greater situational awareness than any other – who else can literally look through their aircraft at their surroundings? The JSF is a turning point in fighter capability, its pilots use an American football term to describe it, the quarterback; the leader of the offensive team. Now a fighter is the leader of a team beyond the standard four-aircraft formation, it can lead the army, navy and other aircraft in the fight to win.
Pilot’s world view
While the Lockheed Martin F-35 Lightning II can share information across domains, it shares its key data with its pilot through the Gen III helmet mounted display system (HMDS). The display system has to be precisely matched to the pilot’s own vision and so the Gen III helmet is custom fitted. Every pilot will have their head scanned for precise measurements from which a liner is produced. The helmet also has active noise reduction. The Gen III display gives pilots their information through its 40 x 30° field-of-view, high-brightness and high-resolution display with integrated digital night vision. The visor display can show picture-in-picture and it is compatible with eyeglasses and laser eye protection devices. When the F-35 pilot looks straight ahead they will see the typical heads-up display data in front of their eyes. Where other pilots using night-vision have to look through the soda straws of night vision goggle lenses, the F-35’s night imaging is projected onto the visor. This imaging is created by the computer with data from the distributed aperture system’s infra-red cameras. As such, the pilot can look through the bottom of his aircraft and see the terrain below as if his fighter was invisible. In August 2015, Rockwell Collins ESA Enhanced Vision Systems delivered the first Gen III helmet. Collins ESA Enhanced Vision Systems is a joint venture between Elbit Systems of America and Collins Aerospace.