'Affordable' hypersonics, small business and sustainment lead DoD tech chief's priorities

Sur le même sujet

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  18 février 2019 | International, C4ISR

  DARPA: Five Teams of Researchers Will Help DARPA Detect Undersea Activity by Analyzing Behaviors of Marine Organisms

  Goliath grouper, black sea bass, and snapping shrimp, along with bioluminescent plankton and other microorganisms, are set to be the unlikely heroes of DARPA's Persistent Aquatic Living Sensors (PALS) program. Five teams of researchers are developing new types of sensor systems that detect and record the behaviors of these marine organisms and interpret them to identify, characterize, and report on the presence of manned and unmanned underwater vehicles operating in strategic waters. This new, bio-centric PALS technology will augment the Department of Defense's existing, hardware-based maritime monitoring systems and greatly extend the range, sensitivity, and lifetime of the military's undersea surveillance capabilities. DARPA first announced the PALS program in February 2018 with the goal of incorporating biology into new solutions for monitoring adversary movements across the seemingly endless spaces of the world's oceans and seas. Ubiquitous, self-replicating, self-sustaining sea life is adaptable and highly responsive to its environment, whereas maritime hardware is resource intensive, costly to deploy, and relatively limited in its sensing modalities. According to PALS program manager Lori Adornato, “Tapping into the exquisite sensing capabilities of marine organisms could yield a discreet, persistent, and highly scalable solution to maintaining awareness in the challenging underwater environment.” The DARPA-funded PALS teams must develop or apply technologies to record stimulus responses from observed organisms, and develop combined hardware and software systems that interpret those responses, screen out false positives, and transmit analyzed results to remote end users. The teams' solutions will incorporate technologies such as hydrophones, sonar, cameras, and magnetic, acoustic, and kinetic sensors. The team led by Northrop Grumman Corporation, under principal investigator Robert Siegel, will record and analyze acoustics from snapping shrimp and optical activity by bioluminescent organisms. The team led by the Naval Research Laboratory, under principal investigator Lenny Tender, will integrate microbial organisms into a sensing platform to detect and characterize biological signals from natural microorganisms that respond to the magnetic signatures of underwater vehicles. The team led by Florida Atlantic University, under principal investigator Laurent Cherubin, will record and analyze vocalization cues from goliath grouper in tropical and subtropical environments. The team led by Raytheon BBN Technologies, under principal investigator Alison Laferriere, will use snapping shrimp as sources of opportunity for long-range detection, classification, and tracking of underwater vehicles. The team led by the University of Maryland Center for Environmental Science, under principal investigator David Secor, will tag black sea bass with sensors to track the depth and acceleration behaviors of schools of fish that are perturbed by underwater vehicles. DARPA is also funding the Naval Undersea Warfare Center, Division Newport, under principal investigator Lauren Freeman, to develop a seafloor system that uses a hydrophone array and acoustic vector sensor to continuously monitor ambient biological sound in a reef environment for anomalies. The system will analyze changes in the acoustic signals radiated by the natural predator-avoidance response of coral reef ecosystem biota, which could offer an indirect mechanism to detect and classify underwater vehicles in near-real time. DARPA conceived of PALS as a four-year research program with the expectation that researchers will be able to publish results for review by the broader scientific community. However, if DARPA identifies any of the data, results, or technical specifications as controlled unclassified information, DARPA will require the PALS researchers to protect them to prevent proliferation outside of official channels. https://www.darpa.mil/news-events/2019-02-15

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  21 juin 2019 | International, Aérospatial

  Typhoon’s 'Digital Stealth' Can Evolve To Meet Changing Threat

  by Jon Lake Mark Hewer, Leonardo's v-p for the Integrated Mission Solutions Business Area, believes that the company's open/reprogrammable electronic warfare (EW) suite for the Typhoon represents what he calls “digital stealth.” This will confer a high degree of survivability, even in a threat environment whose lethality is growing exponentially, with the emergence of a plethora of high-end, software reprogrammable, multi-spectral threats, including surface-to-air missile systems. These threat systems are being updated more regularly and are frequently networked, allowing them to share intelligence of the air situation. EW systems are able to evolve to deal with this dynamic and rapidly changing threat, in a way that fifth-generation stealthy aircraft cannot. While stealth aircraft are hard to detect, they are not invisible, and counter-stealth technology is developing rapidly. Moreover, the skin, internal structure, and configuration of an aircraft cannot be easily altered. “You cannot easily modify a stealth platform to counter new high-end threats,” Hewer said. Typhoon's EW capabilities are provided by Leonardo's Praetorian Defensive Aids Sub-System (DASS), which incorporates an onboard podded ECM system and off-board ECM, with a towed radar decoy, as well as missile approach, laser, and radar warning systems and a flare and countermeasures dispensing system. These systems will soon be augmented by the new BriteCloud, an active, highly programmable Digital RF Memory (DRFM) decoy that will allow the Typhoon pilot to better counter the highest-end threats. BriteCloud will give a discriminatory capability that is not on any other platform, providing a world-leading expendable active decoy capability on the Typhoon that none of its rivals will have. The MoD's Desidermagazine has predicted that initial operational capability on Typhoon will be declared in late 2019. Arguably more important than the performance of the individual hardware elements within Typhoon's DASS is their ability to be reprogrammed. “What is really important for the high-end customer buying Typhoon is that their EW system is highly programmable,” Hewer said. “There's no point in directing your ECM if it is going to be ineffective against a threat because you're not exploiting its vulnerabilities.” The Typhoon's EW system is undergoing continuous evolution, with regular upgrades to the hardware and a spiral software development process, but the most important factor is getting the right threat intelligence or “mission data” into the system. This is used to interpret the information that the sensors receive, and drives the behavior of the EW system. Mission success will often depend on having the most up-to-date data set to ensure relevance to the environment. This makes the rapidity of the upgrade cycle of paramount importance. Leonardo believes that many customers want a sustainable sovereign mission data capability, and it can offer to provide this as a service or as a fully tailored sovereign solution. The company can help customers to set up a national EW database or an aircraft specific database and has a suite of software tools available to customers. While F-35 naturally incorporates advanced EW systems, there is still a very heavy reliance on the U.S. for mission support, with a relatively cumbersome mission data cycle. Hewer believes that Typhoon is “many years more mature in its operational use of programming for EW.” While Leonardo's emphasis is currently on highlighting its ability to produce robust and agile high-end sovereign mission data generation capabilities for customers, the company is already looking to the future. Greater automation and machine learning promise a solution to the increasing complexity of the threat environment, and the company is also looking at the potential for sharing information across platforms as well as the possibility of reprogramming an EW system in flight. https://www.ainonline.com/aviation-news/defense/2019-06-19/typhoons-digital-stealth-can-evolve-meet-changing-threat

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  30 novembre 2023 | International, Aérospatial

  Saab signs support contract with South Korea for Arthur systems

  Saab will carry out the work with its local support team in South Korea, in cooperation with a team in Gothenburg, Sweden for spare parts supply  and back-office support. http://presscentre@saabgroup.com