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  • Fourth GPS III satellite receives operational acceptance in record time

    4 décembre 2020 | International, Aérospatial

    Fourth GPS III satellite receives operational acceptance in record time

    Nathan Strout WASHINGTON — The fourth GPS III satellite has achieved operational acceptance from the U.S. Space Force at record speeds using an expedited process that was 10 days faster than previous efforts. “[The fourth GPS III satellite] sets a new standard for handover from the contractor launch team to operational acceptance, setting the satellite healthy to the global user community approximately 30 days post launch. Moving forward with future GPS III launches, the timeline between launch and the satellite being set healthy will be at a minimum,” said 2 Space Operations Squadron Flight Commander Capt. Collin Dart in a statement. The satellite was launched Nov. 5 from Cape Canaveral Air Force Station in Florida aboard a SpaceX Falcon 9 rocket. The addition of SV04 to the GPS constellation marks another step toward making M-Code — a more robust GPS signal for military use — available to the war fighter. M-Code provides a more accurate GPS signal with anti-jamming and anti-spoofing capabilities, making it harder for adversaries to block or degrade. Lockheed Martin is the primary contractor for the 10 GPS III satellites and the 22 GPS III Follow-On satellites in development. The Space Force granted GPS IIIF Milestone C in July, clearing the way for production to begin. “M-Code signals are more-secure, harder-to-jam and spoof, and are critical to helping our war fighters complete their missions, especially in contested environments,” Tonya Ladwig, Lockheed Martin's vice president for navigation systems, said in a statement. “GPS III is a war fighting system and we are proud to be helping bring this critical capability to the men and women protecting our nation.” “The highly encrypted M-Code to protect GPS signals from jamming and spoofing is currently enabled on 22 GPS satellites of various generations; 24 are needed to bring the M-Code to the next level of operational capability,” Dart said. “SV04 brings the constellation to 23 M-Code capable vehicles.” The 24th M-Code-enabled GPS satellite, which will be the fifth GPS III satellite, is currently ready for launch. However, the launch is not expected until July 2021 at the earliest. Upgrades to the GPS ground systems and distribution of M-Code-enabled receivers to the field are also needed to get the advanced signal into the hands of war fighters. In addition to moving the constellation closer to M-Code availability, the addition of another GPS satellite to the constellation will provide greater access to the improved L2C and L5 signals to civilian users. “For our billions of civil users, it brings the count up to 23 L2C spacecraft and 16 L5 spacecraft,” said Col. Ryan Colburn, director of the Space and Missile Systems Center Portfolio Architect office's Spectrum Warfare Division. “For professional users with existing dual-frequency operations, L2C enables faster signal acquisition, enhanced reliability, and greater operating range. L5 is broadcast in a radio band reserved exclusively for aviation safety services. It features higher power, greater bandwidth, and an advanced signal design.” And according to Lockheed Martin, the GPS III satellites also include the new L1C signal, which provides improved civilian user connectivity. https://www.c4isrnet.com/battlefield-tech/space/2020/12/03/fourth-gps-iii-satellite-receives-operational-acceptance-in-record-time/

  • Israel launches first-ever multitier missile defense test

    17 décembre 2020 | International, Aérospatial, Naval

    Israel launches first-ever multitier missile defense test

    JERUSALEM — The Israel Missile Defense Organization and the U.S. Missile Defense Agency for the first time demonstrated a multilayered air defense system using the Iron Dome, David's Sling and Arrow weapon systems in a recent series of tests. “Using this approach, a variety of threats may be identified and intercepted via full coordination and interoperability between the systems,” Moshe Patel, the head of IMDO, said Monday. The organization falls under the purview of the Ministry of Defense, whose minster, Benny Gantz, praised the “development of a multilayered air defense system [that] secures us from threats near and far.” The Iron Dome system has been used against rockets and other threats for the last decade, and joint development with the U.S. has supported the Arrow and David's Sling programs. Israel delivered the first of two Iron Dome batteries to the U.S. Army earlier this year. The Israeli tests, which took place within the last few weeks but were announced Dec. 15, saw the systems deploy against cruise missile, UAV and ballistic missile targets. While Israel said the results of the tests will enable industry engineers to evaluate and upgrade the capabilities of the system, the wider context is that the announcement comes amid tension with Iran as well as improved relations between Israel and a number of Gulf states, according to experts. “U.S.-Israel cooperation on multilayered missile defense technologies continues to advance and is a critical factor in ensuring Israel can defend itself from a diverse array of threats posed by Iran and its proxies,” said Dan Shapiro, a visiting fellow at the Institute for National Security Studies, who served as U.S. ambassador to Israel in the Obama administration. Jonathan Schanzer, senior vice president for research at the Foundation for Defense of Democracies, said the ability of Israel's Iron Dome system to hit guided munitions is significant, “particularly as Iran increasingly seeks to arm its terrorist proxies with weapons that [have] evasive qualities. Has Israel developed tech to counter Iran's lethal precision-guided munitions effort? It certainly seems so.” The changing geopolitical environment in the region — particularly improved Israeli relations with Bahrain and the United Arab Emirates in recent months — is important, according to Udi Evental, a colonel in Israel's reserve-duty service and a senior fellow with the Institute for Policy and Strategy at the higher-education institution IDC Herzliya. “The normalization process opens new opportunities both for Israel, Arab states in the Gulf and the U.S.,” Evental said. “Israel might be able to deploy sensors and other means closer to Iran in a way that could offer more and better interception opportunities. ... The U.S. could lead the command and control of such an architecture and integrate into it some American assets as well.” Dan Feferman, a former strategic planner with the Israel Defense Forces and a fellow at the Jewish People Policy Institute, pointed out that “Iran spent a lot of money developing [its strike] capabilities. So [Israel] is testing [its weapons systems] out, and it is an attempt to show Iran and its proxies that [Israeli] capabilities will soon be neutralized and they might as well not bother trying.” In addition to challenging the effectiveness of Iran's regional strategy, the tests also serve as a model for how Israel's neighbors can enhance their own defenses against Iranian threats, according to Shapiro, the former U.S. ambassador to Israel. The tests, he explained, serve as “a source of deepened Israeli-Arab security coordination.” Gulf states could benefit from Israel's defense capabilities, especially in light of the drone and cruise missile attack on Saudi Arabia's Aramco facility in September 2019. Israel's MoD said the drill was in the works for a year, indicating that the planning came after the attack in Abqaiq. Shapiro's colleague, Yoel Guzansky, added that recent reports noted one Gulf state is interested in buying air defense technology from Israel. He also described the Abqaiq attack as a motivator for the recent tests. “For years, cruise missiles were a problem that had to be addressed: Like drones, they fly at low altitudes.” Patel indicated that any cooperative program like David's Sling and Arrow must be approved by the U.S. to market and export to Gulf customers. But Israel has more independence when it comes to Iron Dome, despite Raytheon's involvement in the system's U.S.-based manufacturing. Although it's too early to assume much, he said, “there is a lot of advantage like sharing information and sensors in those countries because we have the same enemies and launchers and more — but it is too early. We begin to build our defense cooperation; this could be considered in the future.” Israel's MoD said the tests indicate the systems are capable of simultaneously intercepting threats. Rafael Advanced Defense Systems is the prime contractor for the development of the David's Sling weapon system, in cooperation with the Raytheon. Israel Aerospace Industries' Elta Systems subsidiary developed the Multi-Mission Radar, and Elbit Systems developed the Golden Almond battle management system, both of which were involved in the tests. “When the different systems in the multilayered mechanism are combined, they may face a variety of simultaneous threats and defend the citizens of the state of Israel,” said retired Brig. Gen. Pini Yungman, executive vice president and head of Rafael's Air and Missile Defense Division. The tests were carried out at sea for safety reasons. The Iron Dome has been integrated with Israel's Navy in the form of the C-Dome, which is to be deployed with the service's new Sa'ar 6-class corvettes. Officials said David's Sling can also be used at sea. During the tests, Iron Dome was used to intercept cruise missiles — a new capability for a system that has historically been deployed against unguided rockets, drones and mortars. Israel has generally used Iron Dome against short-range threats around the Gaza Strip and Golan, while Arrow was used for the first time in 2017 and David's Sling for the first time in 2018 against threats from Syria. The Israel Defense Forces also integrated the multitiered system and sensors into a common air picture, tracking threats, sharing data and launching different interceptors with one command-and-control system for the first time. Combining multiple technologies using open architecture and sensors to create a kind of “glass battlefield” digital picture is a technology Rafael has been working on. This is also part of Israel's multiyear Momentum plan that foresees multilayered air defense as key to success in future wars against local adversaries and what Israel calls “third circle” threats like Iran. https://www.defensenews.com/training-sim/2020/12/16/israels-launches-first-ever-multitier-missile-defense-test/

  • The US Navy is going to need a bigger boat, and it’s getting ready to buy one

    18 septembre 2018 | International, Naval

    The US Navy is going to need a bigger boat, and it’s getting ready to buy one

    By: David B. Larter WASHINGTON — The U.S. surface Navy is moving rapidly toward buying a new large surface ship that will replace the aging cruisers, a ship that Navy leaders and experts say will need to be spacious to accommodate future upgrades and weapon systems. The office of the Chief of Naval Operations Director of Surface Warfare, or OPNAV N96, has convened a “large surface combatant requirements evaluation team” to figure out what the Navy's next large ship will look like and what it will need to do. The goal, according to the N96 head Rear Adm. Ron Boxall, will be to buy the first cruiser replacement in 2023 or 2024. The acquisition process should kick off formally next year once a capabilities development document is completed, but a few main factors are driving the size requirement, Boxall said. The fleet is pushing towards designs that can easily be upgraded without a major overhaul. To do that, the Navy thinks its going to need a lot of extra power for more energy-intensive weapons in the future, such as electromagnetic rail guns and laser weapons. “You need something that can host the [size, weight, power and cooling], so it's probably going to be a little bigger," Boxall said. "Flexibility and adaptability, the ability to upgrade quickly, is going to be a key requirement capability. It's got to have room to grow. Full article: https://www.defensenews.com/naval/2018/09/17/the-us-navy-is-going-to-need-a-bigger-boat-and-its-getting-ready-to-buy-one

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