Ground-Based Midcourse Defense (GMD), previously National Missile Defense (NMD), is an anti-ballistic missile system implemented by the United States of America for defense against ballistic missiles, during the midcourse phase of ballistic trajectory flight.

2022年8月31日 · The Ground-based Midcourse Defense (GMD) system is the United States’ only operationally deployed missile defense program capable of defending the entire U.S. homeland (including Alaska and Hawaii) against long-range ballistic missile attacks.

2019年1月31日 · The Ground-based Midcourse Defense (GMD) element of the Ballistic Missile Defense System provides the capability to engage and destroy limited intermediate- and long-range ballistic missile threats in space to protect the United States homeland.

The Ground-Based Interceptor (GBI) is the anti-ballistic missile component of the United States' Ground-Based Midcourse Defense (GMD) system. This interceptor is made up of a boost vehicle, constructed by Orbital Sciences Corporation, and an Exoatmospheric Kill …

2025年3月4日 · A Boeing-led team completed the construction of 20 new missile silos for the Ground-Based Midcourse Defense, or GMD, system at Fort Greely, Alaska. Shown here is a 2023 GMD test at Vandenberg ...

GMD modeling and simulation (M&S) continues to improve, but remains insuficient to support quantitative efectiveness and lethality assessments. The GMD weapon system uses GBIs to defeat threat missiles during the midcourse segment of flight.

2021年7月26日 · The Ground-based Interceptor (GBI) is a component of the Ground-based Midcourse Defense (GMD) System. GBIs are silo-launched and intercept ballistic missiles in their midcourse, while they are outside of the atmosphere and at their highest trajectory.

Ground-Based Midcourse Defense (GMD) is the cornerstone of MDA’s layered missile defense architecture, providing an around-the-clock capability to defend all 50 states at a moment’s notice. It is the first and only operational system designed to defend the entire U.S. against long-range ballistic missiles.

2020年1月30日 · soldiers will use the GMD system to defend the U.S. Homeland against IRBM and ICBM attacks using GBIs to defeat threat missiles during the midcourse segment of flight.

The Ground-Based Midcourse Defense (GMD) mission is to defend against long-range ballistic missile attacks. The continuing proliferation of both ballistic missile technology and weapons of mass destruction necessitates fielding a multi layered Ballistic Missile Defense System (BMDS).