Spanish Army selected Elbit Systems to supply software-defined radios

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  18 janvier 2021 | International, Aérospatial, C4ISR

  Secrets of Tempest’s ground-breaking radar revealed

  Tom Kington ROME — Radar engineers on the Tempest fighter program have said they expect to break data-processing records. The secret, they explain, is all about miniaturization and going digital. The sixth-generation jet — planned by the U.K., Sweden and Italy and set to enter service after 2030 — will bristle with new technology, from its weaponry and propulsion to a virtual cockpit projected inside the pilot's helmet. But the group set the bar high in October by announcing the fighter's radar would process a quantity of data equivalent to nine hours of high-definition video — or the internet traffic of a medium-sized city — every second. Few details were given to back up the claim, but now U.K.-based engineers with Italian firm Leonardo, who are working on the radar, have shared clues with Defense News. Boosting performance will mean rethinking today's electronically scanned radars, which have grids of small Transmit Receive Modules, or TRM, on the antenna, each generating an individual radar beam which can follow different targets or combine with others to create a larger beam. The TRMs in the array are formed into groups, and the signals received by each group are fed to a receiver which digitalizes the data before passing it to the radar's processor. Due to their size, the receivers must be positioned back from the aircraft's nose and accept the incoming analogue radar signal down coaxial cables, which incurs some data loss before the signal is digitalized. To remedy that, Leonardo is working on miniaturizing the receivers so they can be moved up into the nose and integrated within the antenna, cutting out the need for a coaxial cable. The data emerging from the receiver must still travel to the processor, but by now it is digital and can flow down fiber-optic cables, reducing data loss. “Miniaturized receivers can digitalize the signal within the antenna much earlier in the receive chain,” said chief engineer Tim Bungey. That's one step up from the new state-of-the-art European Common Radar System Mark 2 radar that BAE Systems and Leonardo have signed to deliver for RAF Eurofighters, which will use coaxial cables. “Digitalizing the data closer to the array means more data can be received and transmitted, the data can be more flexibly manipulated, and there is more potential for using the radar as a multi-function sensor such as for data linking and for electronic warfare,” said Bungey. There is also a second advantage to miniaturized receivers: Many more can be installed, meaning each one handles fewer TRMs. “To improve performance and flexibility within the system, a key challenge is to divide the TRMs into more groups containing fewer TRMs, handled by more receivers,” said Bungey. “By achieving that, together with supporting wider bandwidths, you can generate significantly more data, giving greater flexibility for beam steering and multi-function operation,” he added. “We are aiming to increase the number of groups of TRMs, and therefore the number of receivers, beyond what will be offered by the MK2 radar for Eurofighter,” he added. While the radar may push the envelope, Duncan McCrory, Leonardo's Tempest chief engineer, said it would be a mistake to consider it as a stand-alone component. “The MRFS will be integrated within the wider Tempest Mission System, which incorporates a full suite of electronic-warfare and defensive-aids capabilities, EO/IR targeting and situational awareness systems, and a comprehensive communications system.” he said. “The data captured by these systems will be fused to create a rich situational awareness picture for the aircrew,” he added. “This information will also be fused with data received from other aircraft and unmanned systems, with machine learning used to combine and process the overall situational awareness picture for the aircrew. This avoids information overload in the cockpit, enabling the aircrew to quickly absorb data and make decisions based on suitably processed and validated information, and rapidly respond to threats in highly contested environments,” he said. McCrory added that Leonardo demonstrated aspects of human-machine teaming recently in a trial organized with the British Army and the MoD's Defence Science and Technology Laboratory, in which a Wildcat helicopter crew tasked a semi-autonomous UAV provided by Callen-Lenz to gather imagery and feed it back to the cockpit display via datalink. “It is these human-machine teaming principles that we will be building upon for Tempest,” he said. “The MRFS will be integrated within the wider Tempest Mission System, which incorporates a full suite of electronic-warfare and defensive-aids capabilities, EO/IR targeting and situational awareness systems, and a comprehensive communications system.” he said. “The data captured by these systems will be fused to create a rich situational awareness picture for the aircrew,” he added. “This information will also be fused with data received from other aircraft and unmanned systems, with machine learning used to combine and process the overall situational awareness picture for the aircrew. This avoids information overload in the cockpit, enabling the aircrew to quickly absorb data and make decisions based on suitably processed and validated information, and rapidly respond to threats in highly contested environments,” he said. McCrory added that Leonardo demonstrated aspects of human-machine teaming recently in a trial organized with the British Army and the MoD's Defence Science and Technology Laboratory, in which a Wildcat helicopter crew tasked a semi-autonomous UAV provided by Callen-Lenz to gather imagery and feed it back to the cockpit display via datalink. “It is these human-machine teaming principles that we will be building upon for Tempest,” he said. As Tempest development proceeds, McCrory said design of the integrated mission system was proceeding in parallel with the design of the aircraft itself. “We are effectively designing the aircraft from the inside out; by this I mean we are working closely with the MoD to understand future sensing, communications and effects capability requirements, and then working with the Team Tempest partners to ensure the aircraft can accommodate and support the required avionic systems.” Leonardo is working with BAE Systems to ensure the airframe will accommodate sensors, with Rolls Royce to ensure there is sufficient powering and cooling for the systems, and with MBDA, said McCrory, “to give weapons the best available data prior to launch, and to keep them informed after they are released and receive data back from them as they progress towards the target.” https://www.c4isrnet.com/home/2021/01/15/secrets-of-tempests-ground-breaking-radar-revealed/

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  2 mars 2020 | International, Aérospatial

  Growing threat at high altitude: innovation to fight drones

  Over the past ten years, the growing availability of Unmanned Aerial Vehicles (UAV), commonly known as drones, has been a blessing for video enthusiasts and other tech addicts. But it also created a headache for safety authorities. To respond to this flourishing market, countermeasures are being developed in parallel, and represent a full-fledged business today. Very early after their appearance on the market, drones invited themselves on the battlefield. In 2014, the Islamic state was already using versions (Phantom 3 or 4) for reconnaissance. Then came the suicide drones, fitted with makeshift grenades. Conventional armies are also increasingly relying on them. If the United States used to have a quasi-monopoly on offensive UAVs at the beginning of the 21st century, countries such as China, Russia, and even Iran are constantly trying to fill the gap. In 2019, a wave of Iranian-made Qasef drones operated by the Houthi rebels took Saudi Arabia by surprise. Despite the presence of modern anti-aircraft missile systems such as the Patriot, the refineries of Abqaiq and Khurais, eastern Saudi Arabia, were heavily damaged, putting half of the country's oil production to a halt. Even in times of peace, UAVs can constitute a threat. In January 2019, drones caused a panic at London Gatwick Airport (LGW), United Kingdom, in the days preceding Christmas. The airport was closed for three days, creating a financial loss of several millions of pounds. The following months, less successful drone incidents also disturbed traffic at Changi Airport (SIN) in Singapore and at London Heathrow (LHR). To raise awareness of this danger and the lack of readiness, Greenpeace activists intentionally crashed several drones against French nuclear plants. A drone to rule them all In a similar fashion to the airports that have decided to rely on falconry to prevent birdstrikes, Fortem Technologies has decided to fight fire with fire. The US-based company offers several solutions to secure sites at risk from drone threats. A centralized system called SkyDome relies on an array of sensors, cameras and radars to monitor the surroundings and identify potential threats. The integrated artificial intelligence is capable of differentiating a bird from a drone, and to judge if the latter poses a threat or not. Once the threat is identified, SkyDome sends the HunterDrone capable to intercept the culprit and to fish it out of the air using a projectable net. Fortem Technologies has recently caught the interest of the U.S. Department of Defense (DoD). On February 3, 2020, the company announced it had been awarded a contract through the Defense Innovation Unit (DIU). While the price of the contract is unknown, it appears that the DoD chose to acquire the whole set of solutions. “Fortem has a number of technologies that can help protect military bases without adverse effects to local communities,” the manufacturer said. The Israeli company Rafael also offers a centralized system, but with a different solution. Named DroneDome (in reference to the Iron Dome that defends Israel from missile threats) it relies either on a precise jammer, or on a powerful laser. It was this system that put an end to Gatwick's mayhem. It was also used in 2018 to secure the G20 Buenos Aires summit. Man-portable solutions also exist. During the last national day in France, the military presented to the officials two anti-drone rifles (the Nerod F5 by the French-based MC2-Technologies and the DroneGun Tactical by the Australian company DroneShield). The purpose of those Star-Wars-like devices is not to destroy the enemy drones as one could expect, but to jam their signals. When they lose contact with their control base, drones usually go back to their takeoff point or stay in stationary flight until they run out of battery. That solution avoids for dangerous debris to fall and create collateral damages, for example onto a crowd during an event. https://www.aerotime.aero/clement.charpentreau/24617-growing-threat-at-high-altitude-innovation-to-fight-drones

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  13 juillet 2020 | International, Aérospatial

  DoD hands out $84 million in recovery funds for small drone makers and a space firm

  By: Aaron Mehta WASHINGTON — The U.S. Department of Defense announced Friday it is issuing $84.4 million in funding through the Defense Production Act to small unmanned technology, space and shipbuilding companies. The money, divided among seven different companies, will be used to “sustain and strengthen essential domestic industrial base capabilities,” per a Pentagon announcement. “These actions will help to retain critical workforce capabilities throughout the disruption caused by COVID-19 and to restore some jobs lost because of the pandemic.” The Defense Production Act has been in the spotlight in recent months, as it's served as a central tool in attempts by the Trump administration to increase production of personal protective equipment to combat the spread of the coronavirus, something critics say the administration was too slow to implement. Title III of the DPA gives the department the opportunity to fund what it sees as critical suppliers of the defense industry who might otherwise be at risk of closing. Although those authorities have been on the books for years, the department became more serious about using them following a 2018 landmark study of the defense industrial base that identified a number of sectors where small companies that provide key parts for America's arsenal could go out of business. The undersecretary of defense for acquisition and sustainment, Ellen Lord, previously identified shipbuilding, aviation and the small space sector as three areas that are suffering under the economic impacts from COVID-19. She has said her office will keep an eye on those sectors. That seems to have played out in the Pentagon's announcement about the $84.4 million in funding. Of the funding, $13.4 million went to five small unmanned systems companies. Funding was authorized and appropriated under the Coronavirus Aid, Relief and Economic Security Act, and awarded through the Defense Innovation Unit — the Silicon Valley technology hub for the Pentagon. The department claims the funding “saved 14 jobs, created 20 new positions, and will support continued advancement of capabilities providing the companies additional paths for recurring revenue.” Even before the economic damage from COVID-19, the department had identified small UAS manufacturers as a sector that needs to grow. Included in this latest funding are: AirMap, in Santa Monica, California, which received $3.3 million. The money will “aid product development and engineering support for integration of sUAS mission planning, post-mission analysis, and unmanned traffic management software.” ModalAI, of San Diego, California, which received $3 million to “develop their next generation U.S.-made flight controller that will enable advanced autonomy including GPS-denied navigation, and all-environment obstacle avoidance.” Skydio, in Redwood City, California, which received $4 million to “improve the flight controller hardware/software and data link for their sUAS so that highly capable components can be purchased and used across U.S. Government unmanned systems.” Graffiti Enterprises, located in Somerset, New Jersey, which was given $1.5 million to “modify their commercial data link for DoD's sUAS use including operation in restricted frequency bands, reduction in the size, weight, and power of the hardware, and software developments to improve security and resiliency of their data link.” Obsidian Sensors, from San Diego, California, which received $1.6 million to build a “low-cost, dual thermal sUAS camera that can be mounted onto a stabilization gimbal and then integrated and flown on small, packable, ISR systems.” In addition, the Pentagon awarded $15 million to LeoLabs, based in Menlo Park, California, to “ensure the continued viability of space surveillance capability through the operation and maintenance of a world-wide highly capable phased-array radar network.” The department said LeoLabs is the only domestic commercial supplier with the capability to meet requirements in this area. Last month, the Space Force invoked the DPA to get funding for six small space companies that were considered at risk, before it reversed those awards two weeks later. While those are all fairly small technology firms, the biggest dollar amount awarded was $56 million for ArcelorMittal Inc., a steel and mining company based in Chicago, Illinois. The funding, also from the coronavirus relief package, will be used to “protect” jobs impacted by the pandemic that are critical to military shipbuilding. Specifically, the investment will “expand ArcelorMittal's plate processing footprint and heat-treating capability, subsequently increasing its alloy steel plate production and ensure the U.S. Government gets dedicated long-term industrial capacity to meet the needs of the nation,” per the department. https://www.defensenews.com/industry/2020/07/10/dod-hands-out-84-million-in-recovery-funds-for-small-unmanned-companies-space-firm