美“金穹”系统细节曝光 资金技术难题不少

Core Points - The "Iron Dome" space-based missile defense system, known as "金穹," consists of a four-layer defense architecture, including one space-based layer and three land-based layers, with 11 short-range missile launchers distributed across the U.S., Alaska, and Hawaii [1][3] - The system is projected to cost approximately $175 billion and aims to achieve full operational capability by 2028, integrating with existing U.S. missile defense capabilities [3] - The project faces significant technical challenges and funding issues, with experts expressing concerns about its offensive nature and potential violations of the Outer Space Treaty [3][4] Defense System Structure - The "金穹" system includes a space-based sensor and targeting layer for missile warning and tracking, along with three land-based layers featuring interceptors, radar arrays, and possibly laser weapons [3] - A new large missile launch site is planned in the Midwest to deploy next-generation interceptors, complementing existing systems like THAAD and Aegis [4] Technical Challenges - The system will encounter technical difficulties, particularly regarding communication delays across the entire "kill chain," which poses a significant barrier to effective operation [5] - Major defense contractors such as Lockheed Martin, Northrop Grumman, Raytheon, and Boeing are involved in providing various missile defense systems, but cross-system communication remains a challenge [5] Industry Involvement - The presentation did not mention Elon Musk's SpaceX, despite earlier reports suggesting that the company might secure a key component contract for the "金穹" system [6]