14 septembre 2018 | International, C4ISR
By: Daniel Cebul
The U.S. Air Force is getting ready to deliver the first of its next-generation GPS III satellites into orbit later this year, and expects the new satellites to deliver significant capability improvements. But much work also needs to be done on Earth to make sure the Air Force is able to get the most out of the platforms.
That's why Lockheed Martin will begin a series of updates to the architecture's ground control system following the initial launch, according to a statement from the company. These updates will give the Air Force get a head start on testing and operations before the majority of the constellation is in place.
The Air Force placed Lockheed Martin on contract in 2016 and 2017 to upgrade the existing Architecture Evolution Plan (AEP) Operational Control System (OCS) called GPS III Contingency Operations (COps) and M-Code Early Use (MCEU), respectively. Just as the GPS III satellites themselves are equipped with improved anti-jamming technology and more accurate signals transmission capability, the ground systems and software that control them need to be upgraded as well.
The Air Force has also worked with Raytheon on the estimated $6 billion Operational Control Segment program, often referred to as OCX. That program is expected to serve as the primary ground control system for the GPS III program but has been behind schedule. SpaceNews recently reported the target completion date for Block 1 of the program is June 2021. Block O, the launch and checkout system, was delivered in September 2017.
ockheed Martin's contingency program will allow the existing control system to support and integrate more powerful GPS III satellites. Modifications will support GPS III satellites in their position, navigation and timing missions, coordinating their movement with GPS IIR, IIR-M and IIF satellites already in orbit.
A second set of upgrades, known as the MCEU modernization program, will focus on the development of M-Code, a new advanced signal designed to improve anti-jamming and anti-spoofing capabilities. The program will improve the existing ground system and allow it to task, upload and monitor M-Code within the GPS constellation. In other words, MCEU modernization will help the Air Force integrate and test GPS III satellites into the current constellation earlier.
COps is on schedule for delivery in May 2019 and MCEU is scheduled for delivery in January 2020.
5 juin 2024 | International, Sécurité
Critical updates released for NAS326 and NAS542 devices address severe vulnerabilities that could allow unauthenticated attackers to execute OS comman
23 janvier 2019 | International, C4ISR
DARPA's Radio Frequency Risk Reduction Deployment Demonstration (R3D2) is set for launch in late February to space-qualify a new type of membrane reflectarray antenna. The antenna, made of a tissue-thin Kapton membrane, packs tightly for stowage during launch and then will deploy to its full size of 2.25 meters in diameter once it reaches low Earth orbit. R3D2 will monitor antenna deployment dynamics, survivability and radio frequency (RF) characteristics of a membrane antenna in low-Earth orbit. The antenna could enable multiple missions that currently require large satellites, to include high data rate communications to disadvantaged users on the ground. A successful demonstration also will help prove out a smaller, faster-to-launch and lower cost capability, allowing the Department of Defense, as well as other users, to make the most of the new commercial market for small, inexpensive launch vehicles. Satellite design, development, and launch took approximately 18 months. “The Department of Defense has prioritized rapid acquisition of small satellite and launch capabilities. By relying on commercial acquisition practices, DARPA streamlined the R3D2 mission from conception through launch services acquisition,” said Fred Kennedy, director of DARPA's Tactical Technology Office. “This mission could help validate emerging concepts for a resilient sensor and data transport layer in low Earth orbit – a capability that does not exist today, but one which could revolutionize global communications by laying the groundwork for a space-based internet.” The launch will take place on a Rocket Lab USA Electron rocket from the company's launch complex on the Mahia Peninsula of New Zealand. Northrop Grumman is the prime contractor and integrated the 150 kg satellite; MMA Design designed and built the antenna. Trident Systems designed and built R3D2's software-defined radio, while Blue Canyon Technologies provided the spacecraft bus. Rocket Lab will host a webcast and provide coverage of the launch via live stream: http://www.rocketlabusa.com/live-stream. https://www.darpa.mil/news-events/2019-01-22b
21 octobre 2020 | International, Aérospatial, Naval, C4ISR
General Atomics Aeronautical Systems, Inc. (GA-ASI), a global leader in Remotely Piloted Aircraft Systems (RPAS), kicked off a series of validation flights on Oct. 15 for Japan Coast Guard (JCG) in Hachinohe, Aomori Prefecture, Japan. GA-ASI is working with Asia Air Survey (AAS) in Japan to conduct the flights. Naval News Staff GA-ASI press release “We appreciate Asia Air Survey's support in demonstrating how the MQ-9B SeaGuardian RPAS can provide affordable, long-endurance airborne surveillance of Japan's maritime domain,” said Linden Blue, CEO, GA-ASI. “The system's ability to correlate multiple sensor feeds and identify vessel anomalies provides effective, persistent maritime situational awareness.” The SeaGuardian flights will validate the wide-area maritime surveillance capabilities of RPAS for carrying out JCG's missions, from search and rescue to maritime law enforcement. These flights follow successful “legacy” MQ-9 maritime patrol demonstrations in the Korea Strait in 2018 and the Aegean Sea in 2019. The Hachinohe operation features the MQ-9B configuration, capable of all-weather operations in civil national and international airspace. The SeaGuardian RPAS features a multi-mode maritime surface-search radar with Inverse Synthetic Aperture Radar (ISAR) imaging mode, an Automatic Identification System (AIS) receiver, a High-Definition – Full-Motion Video sensor equipped with optical and infrared cameras. This sensor suite, augmented by automatic track correlation and anomaly-detection algorithms, enables real-time detection and identification of surface vessels over thousands of square nautical miles. GA-ASI's MQ-9B is revolutionizing the long-endurance RPAS market by providing all-weather capability and compliance with STANAG-4671 (NATO airworthiness standard for UAVs). These features, along with an operationally proven collision-avoidance radar, enables flexible operations in civil airspace. https://www.navalnews.com/naval-news/2020/10/general-atomics-starts-seaguardian-rpas-validation-flights-in-japan/