AEHF

AEHF
USAF (Los Angeles AFB) · Public domain · source
Name	AEHF
Operator	United States Space Force
Orbit	Geostationary orbit

AEHF is a series of communications satellites operated by the United States Space Force, providing secure communication services to the United States Department of Defense and other Five Eyes countries, including Australia, Canada, New Zealand, and the United Kingdom. The AEHF system is designed to replace the Milstar satellite constellation, which was launched in the 1990s and operated by the United States Air Force. The AEHF satellites are built by Lockheed Martin and are equipped with shuttle-based payloads and antennas designed by Northrop Grumman and General Dynamics. The system is also compatible with the Advanced Extremely High Frequency terminals used by the United States Army, United States Navy, and United States Air Force.

Introduction to AEHF

The AEHF system is designed to provide highly secure and reliable communication services to the United States Department of Defense and its allies, including NATO and other international partners, such as Japan and South Korea. The system uses frequency hopping and spread spectrum techniques to provide secure communication services, and is also equipped with jamming resistance and anti-spoofing capabilities. The AEHF satellites are operated by the United States Space Force's 50th Space Wing, which is headquartered at Schriever Air Force Base in Colorado. The system is also supported by the National Security Agency, which provides cryptographic services and signals intelligence support.

History of AEHF

The AEHF program was launched in the 1990s, with the first satellite launched in 2010. The program was developed in response to the need for a more secure and reliable communication system, following the Gulf War and the Bosnian War. The AEHF system was designed to replace the Milstar satellite constellation, which was launched in the 1990s and operated by the United States Air Force. The AEHF program has involved collaboration with international partners, including Australia, Canada, New Zealand, and the United Kingdom, which have contributed to the development and launch of the satellites. The program has also involved cooperation with other US government agencies, including the National Security Agency, the National Reconnaissance Office, and the Defense Information Systems Agency.

Technical Characteristics

The AEHF satellites are equipped with phased array antennas and transponders designed by Northrop Grumman and General Dynamics. The satellites use gallium arsenide and gallium nitride amplifiers to provide high-power amplification and frequency conversion. The AEHF system operates in the extremely high frequency (EHF) band, which provides highly secure and reliable communication services. The system is also equipped with error correction and data compression capabilities, which provide high-speed data transfer and reliable communication services. The AEHF satellites are powered by solar panels and batteries, and are equipped with propulsion systems designed by Boeing and Lockheed Martin.

Operational Use

The AEHF system is used to provide secure communication services to the United States Department of Defense and its allies, including NATO and other international partners. The system is used to support a range of military operations, including command and control, intelligence, surveillance, and reconnaissance (ISR), and communications relay. The AEHF system is also used to support disaster response and humanitarian assistance operations, such as those conducted by the United States Agency for International Development (USAID) and the American Red Cross. The system is operated by the United States Space Force's 50th Space Wing, which is headquartered at Schriever Air Force Base in Colorado.

Satellite Constellation

The AEHF satellite constellation consists of six satellites, which are operated in geostationary orbit (GEO) at an altitude of approximately 36,000 kilometers. The satellites are spaced at intervals of approximately 60 degrees, providing global coverage and highly secure communication services. The AEHF satellites are designed to provide a range of communication services, including wideband and narrowband communications, and are equipped with antennas and transponders designed by Northrop Grumman and General Dynamics. The AEHF system is also compatible with the Wideband Global SATCOM (WGS) system, which is operated by the United States Air Force and provides wideband communication services to the United States Department of Defense.

Development and Launch

The AEHF program was developed by Lockheed Martin, which was awarded a contract by the United States Air Force in 2001. The first AEHF satellite was launched in 2010, and the remaining satellites were launched over the next several years. The AEHF satellites were launched using Atlas V rockets, which were provided by United Launch Alliance (ULA). The AEHF program has involved collaboration with international partners, including Australia, Canada, New Zealand, and the United Kingdom, which have contributed to the development and launch of the satellites. The program has also involved cooperation with other US government agencies, including the National Security Agency, the National Reconnaissance Office, and the Defense Information Systems Agency. The AEHF system is expected to remain in operation until the 2030s, when it will be replaced by the Wideband Global SATCOM (WGS) system and other next-generation communication systems, such as the Space-Based Infrared System (SBIRS) and the Geostationary Operational Environmental Satellite (GOES) system. Category:Satellites