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Patriot TMD

MIM-104D/E Patriot Guidance Enhanced Missile (GEM)

Lessons learned during Desert Storm enable Raytheon to develop the Patriot Guidance Enhanced Missile (GEM), an improved PAC-2 missile with increased effectiveness and lethality against SCUD missiles. In February 1995, the U.S. Army took delivery of the first PATRIOT Advanced Capability-2 (PAC-2) Guidance Enhanced Missile (GEM). The GEM incorporates improvements to the front end of the PAC-2 missile receiver to enhance its effectiveness and lethality against SCUD-class ballistic missiles. Patriot GEM included a faster warhead fuze to improve kill probability against tactical ballistic missiles and a new low-noise missile seeker section to expand the missile's engagement area. The PAC-2`s maximum range is reported to be around 160 km, and its speed was upgraded to Mach 5, making it substantially faster than the PAC-1. The US Army initially planned to field about 350 PAC-2 GEM missiles.

Guidance Enhanced Missile Plus (GEM+)

In 2002 the Guidance Enhanced Missile Plus (GEM+) added a low-noise oscillator for improved acquisition and tracking performance in clutter against lower cross-section targets. The GEM+ missile provides an upgraded capability to defeat airbreathing, cruise missile and ballistic missile threats in complement to the PAC-3 missile.

Guidance Enhanced Missile Plus (GEM+) deliveries to the U.S. Army began in 2002. This capability added an extremely low noise oscillator for improved acquisition and tracking performance in clutter against lower cross section targets. The GEM+ missile provided an upgraded capability to defeat airbreathing, cruise missile and ballistic missile threats in complement to the PAC-3 missile.

A modernized digital fuze design eliminates obsolescence and introduces significant performance improvements against TBM targets. This design also increases sensitivity for improved performance against low radar cross section (RCS) targets and a shorter range gate for improved performance against low-altitude targets in clutter. In addition, software switchable reduced time constant improves performance against high-speed TBM targets.

The LNFE of the GEM+ has increased seeker sensitivity, improving acquisition/track performance against low RCS targets. The new low noise oscillator design has a modified downlink, which provides increased signal to interference ratio, improving acquisition/track performance against small ABT and cruise missile targets in clutter.

The GEM+ is combat proven in Operation Iraqi Freedom. In 2003, the U.S. and coalition Patriot units were deployed throughout the CENTCOM Region to protect forces and populations from the threat of ballistic missiles. The improvements, developed and fielded since 1991, reflect the enhanced capabilities of Patriot to protect against threats to both static assets and forces in the attack. The Configuration 3 Ground Equipment, GEM+, GEM and PAC-3 missiles are all combat proven.

Patriot PAC-2 Guidance Enhanced Missile-Cruise [GEM-C]

In the GEM+ contract award announced by the Department of Defense on March 8, 2005, Raytheon Integrated Defense Systems will work with the Army to upgrade 90 PAC-2 missiles to the GEM-T configuration. Additionally, the award calls for the upgrade of an additional 73 PAC-2 GEM missiles to the GEM-C configuration.

Guidance Enhanced Missile-Tactical (GEM-T)

Guidance Enhanced Missile-Tactical (GEM-T -- seemingly the new name for GEM+) is a significant upgrade over the existing Patriot Advanced Configuration-2 (PAC-2) missile and, when fielded in conjunction with the PAC-3 system, provides a robust capability against ballistic missiles, cruise missiles, aircraft and remotely piloted vehicles. It is available to both the US Army and approved international allies. GEM-T provides the U.S. Army and its allies an affordable upgrade to leverage existing missile inventories into the Configuration-3 capability. GEM-T missiles are PAC-2 missiles that are refurbished and modernized at Raytheon's Integrated Air Defense Center, Andover, Mass. Through the upgrade process, older components are replaced, new technology inserted and reliability increased.

In February 2005 Raytheon Company's low cost Patriot GEM-T missiles destroyed two target drones during a test conducted at White Sands Missile Range, NM. During the test, a Patriot Configuration -- 3 firing unit successfully intercepted two low-flying target drones, destroying both targets. The test went smoothly as planned, with the ground equipment and radar seamlessly interfacing with the missiles, resulting in a near vertical intercept of the incoming targets. This test was an important milestone for the GEM-T missiles because it was in support of a full material release decision. At the time, Raytheon was under contract to the Army to upgrade 376 missiles to the GEM-T configuration, with 230 of the upgraded missiles already delivered.

In the GEM+ contract award announced by the Department of Defense on March 8, 2005, Raytheon Integrated Defense Systems will work with the Army to upgrade 90 PAC-2 missiles to the GEM-T configuration. Additionally, the award calls for the upgrade of an additional 73 PAC-2 GEM missiles to the GEM-C configuration.

On June 19, 2006 Raytheon Company's Patriot Guidance Enhanced Missiles (GEM) celebrated its second consecutive successful test flight as a GEM-T missile destroyed a surrogate cruise missile at White Sands Missile Range, NM. The successful government test of the next evolution of the Patriot Advanced Configuration-2 (PAC-2) GEM missile was the second of four development flight tests to be conducted by the Patriot Lower Tier Project Office using Raytheon's newly-developed Patriot system post deployment build-6 (PDB-6) software. Three Patriot Configuration-3 fire units in a battalion configuration using PDB-6 software engaged a surrogate cruise missile flying at a low altitude simulating an attack on one of the Patriot fire units. A GEM-T missile with improved capabilities was successfully launched from a local launcher and destroyed the target. The capabilities incorporated into PDB-6 are the next step in the evolving growth for Patriot. This update is composed of user-requested improvements, planned performance improvements, and improvements that had resulted out of lessons learned from Operation Iraqi Freedom.

In February 2007 a Raytheon Company Configuration 3 Patriot system, composed of a Patriot Guidance Enhanced Missile-T (GEM-T), a Patriot launcher, engagement control station and Patriot radar, destroyed a surrogate cruise missile target to complete a perfect three-for-three mission set as part of a two-month evaluation at White Sands Missile Range, NM. Using a Configuration-3 missile system with its newly developed PDB-6 (post deployment build-6) system software, a government evaluation team successfully completed three missions that met all test objectives. The objectives included demonstrating the performance of the GEM-T missile improvement using PDB-6 software and demonstrating the system's capability to detect, track and intercept ballistic, theater ballistic missile and low- altitude cruise missile threats.

In May 2007 Raytheon Company's Patriot Guidance Enhanced Missile-T (GEM-T) upgrade program reached its first-ever $100 million sales award. This award includes orders for the U.S. Army and a Foreign Military Sales contract for 230 GEM-T upgrades, plus spares. This is the largest order received to date for GEM-T and bolsters Raytheon's upgrade output to levels not seen since the mid 1990s. This large order benefits both customers with significant price reductions. For successive awards, Raytheon has successfully reduced the acquisition unit price for the U.S. Army.

During 2007 Raytheon received a $67 million U.S. Army contract for 152 Patriot Guidance Enhanced Missile-Tactical (GEM-T) upgrades, the second of two large orders received in 2007 for GEM-T. The award increases the total number of GEM-T missiles ordered to 952 since program inception for a total contract value of $430 million.

On December 4, 2007 the Defense Security Cooperation Agency notified Congress of a possible Foreign Military Sale to Kuwait of PAC-3 missiles, PAC-2 missile upgrades to GEM-T, and PATRIOT ground support equipment upgrades as well as associated equipment and services. The total value, if all options are exercised, could be as high as $1.363 billion. The Government of Kuwait requested a possible sale of 80 PAC-3 Missiles, PATRIOT GEM-T Modification Kits to upgrade 60 PAC-2 missiles, and 6 PATRIOT System Configuration 3 Modification kits to upgrade PATRIOT Radars to REP III.

On December 4, 2007 the Defense Security Cooperation Agency notified the Congress of planned arms sale to the United Arab Emirates (UAE). The UAE deal includes Raytheon Patriot air defense systems worth up to 9 billion dollars, the Pentagon's Defense Security Cooperation Agency (DSCA) told the Congress in a notice. The proposed sale package comprises nine Patriot fire units with 10 phased-array radars, 37 launching stations and 288 Patriot Advanced Capability-3 (PAC-3) missiles plus 216 Guidance Enhanced Missiles-T (GEM-T).




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