The GEM-T missile provides an upgraded capability to defeat air-breathing, cruise and ballistic missiles, as a complement to the PAC-3 missile. The upgrade involved a new fuse and the insertion of a new low-noise oscillator, which increased the seeker’s sensitivity to low radar cross-section targets. Raytheon developed the Patriot guidance enhanced missile (GEM-T), an upgrade to the PAC-2 missile. The minimum flight time is less than nine seconds while the maximum is three and a half minutes. The missile has a range of 70km and a maximum altitude greater than 24km. The high-explosive 90kg warhead is situated behind the terminal guidance section. ![]() The course correction commands are transmitted to the missile via the missile track command uplink. The target acquisition system in the missile acquires the target in the terminal phase of flight and transmits the data using the TVM downlink via the ground radar to the engagement control station for final course correction calculations. Midcourse correction commands are transmitted to the guidance system from the mobile engagement control centre. The Patriot missile is equipped with a track-via-missile (TVM) guidance system. ![]() Guidance enhanced missile (GEM-T) upgrade The deployment was in response to a drone attack on oil facilities operated by state-owned oil company Saudi Aramco in Saudi Arabia in September 2019. The US Department of Defense (DoD) approved the deployment of additional forces and a range of military systems including two Patriot missile batteries and a Terminal High Altitude Area Defence (THAAD) to Saudi Arabia in October 2019. The systems were stationed in Kuwait and destroyed a number of hostile surface-to-surface missiles using the new Patriot advanced capability-3 (PAC-3) and guidance enhanced missiles. US forces deployed the Patriot missile systems during the 2003 Iraq conflict.
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