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先進極高頻通信衛星(AEHF/Advanced Extremely High Fre … 先進極高頻通信衛星(AEHF/Advanced Extremely High Frequency)，是美國太空部隊(United States Space Force)操作的一系列安全通信衛星, 它們用於美國武裝部隊，英國武裝部隊，加拿大武裝部隊，荷蘭皇家武裝部隊和澳大利亞國防軍。該系統將由地球靜止軌道上的六顆衛星組成。最終衛星于2020年3月26日發射升空。AEHF向後兼容並將取代舊的Milstar系統，並將在44 GHz上行鏈路（EHF頻段）和20 GHz下行鏈路（SHF頻段）上運行。 AEHF通信系統，將為高度優先的地面軍事，海洋軍事和空中軍事提供可長存的，全球的，安全的，受保護的和抗干擾的通信。的地面軍事，海洋軍事和空中軍事提供可長存的，全球的，安全的，受保護的和抗干擾的通信。
, Das Advanced Extremely High Frequency Syst … Das Advanced Extremely High Frequency System (AEHF) ist ein gemeinsames Satellitenkommunikationssystem der US-amerikanischen Streitkräfte für sichere, bandbreitenbeständige, weltweite Kommunikationen und dient zur Sicherung dieser in Krisen- und Kriegszeiten. Es soll das vorhandene Milstar-System zunächst ergänzen und schließlich ersetzen.unächst ergänzen und schließlich ersetzen.
, Advanced Extremely High Frequency (AEHF) i … Advanced Extremely High Frequency (AEHF) is a constellation of communications satellites operated by the United States Space Force. They are used to relay secure communications for the United States Armed Forces, the British Armed Forces, the Canadian Armed Forces, the Netherlands Armed Forces and the Australian Defence Force. The system consists of six satellites in geostationary orbits. The final satellite was launched on 26 March 2020. AEHF is backward compatible with, and replaces, the older Milstar system and will operate at 44 GHz uplink (extremely high frequency (EHF) band) and 20 GHz downlink (super high frequency (SHF) band). The AEHF system is a joint service communications system that provides survivable, global, secure, protected, and jam-resistant communications for high-priority military ground, sea and air assets.ority military ground, sea and air assets.
, AEHF è una Costellazione satellitare americana per le comunicazioni militari.
, Advanced Extremely High Frequency (AEHF) — … Advanced Extremely High Frequency (AEHF) — группировка спутников защищенной связи, которая обеспечивают защищенную и устойчивую к помехам связь представителей американского командования с развернутыми воинскими частями и подразделениями. По оценкам специалистов, стоимость AEHF-4 составляет около $1,8 млрд. Использовать возможности спутника смогут также союзники США, в том числе Великобритания, Канада и Нидерланды. Ожидается, что всего будет произведено семь аппаратов этого типа. Спутники AEHF используют большое количество узконаправленных лучей, направленных на Землю, для передачи сообщений пользователям и от них. Перекрестные связи между спутниками позволяют им передавать сообщения напрямую, а не через наземную станцию. Спутники предназначены для обеспечения помехоустойчивой связи с низкой вероятностью перехвата. Они включают в себя радиотехнологию со скачкообразной перестройкой частоты, а также антенны с фазированной решеткой, которые могут адаптировать свои диаграммы направленности для того, чтобы заблокировать потенциальные источники помех.блокировать потенциальные источники помех.
, L’Advanced Extremely High Frequency (AEHF) … L’Advanced Extremely High Frequency (AEHF) est une constellation de satellites de télécommunications militaires exploitée à l'origine par le Air Force Space Command puis depuis 2020 par son successeur, la United States Space Force. Ils servent à relayer des communications sécurisées des Forces armées des États-Unis pour répondre à la fois à des besoins tactiques et stratégiques durant des conflits y compris en cas de guerre nucléaire. Le segment spatial opérationnel repose sur la présence de six satellites en orbite géostationnaire couvrant l'ensemble du globe. Ces satellites de plus de six tonnes au lancement disposent de systèmes de communication à très haut débit (SHF et EHF). La constellation AEHF, qui remplace la série des Milstar, a commencé à être déployée en 2010 et assure une couverture complète depuis 2018 grâce au lancement d'un quatrième satellite. Le dernier de ces satellites, d'une durée de vie de quinze ans, a été lancé en mars 2020. La série doit être progressivement remplacée par les satellites ESS dont le premier prototype devrait être placé en orbite vers 2025.pe devrait être placé en orbite vers 2025.
, 先進EHF通信衛星AEHF(Advanced Extremely High Frequency)衛星はアメリカ空軍が整備を進めている新型の軍用通信衛星システムである。
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Das Advanced Extremely High Frequency Syst … Das Advanced Extremely High Frequency System (AEHF) ist ein gemeinsames Satellitenkommunikationssystem der US-amerikanischen Streitkräfte für sichere, bandbreitenbeständige, weltweite Kommunikationen und dient zur Sicherung dieser in Krisen- und Kriegszeiten. Es soll das vorhandene Milstar-System zunächst ergänzen und schließlich ersetzen.unächst ergänzen und schließlich ersetzen.
, 先進極高頻通信衛星(AEHF/Advanced Extremely High Fre … 先進極高頻通信衛星(AEHF/Advanced Extremely High Frequency)，是美國太空部隊(United States Space Force)操作的一系列安全通信衛星, 它們用於美國武裝部隊，英國武裝部隊，加拿大武裝部隊，荷蘭皇家武裝部隊和澳大利亞國防軍。該系統將由地球靜止軌道上的六顆衛星組成。最終衛星于2020年3月26日發射升空。AEHF向後兼容並將取代舊的Milstar系統，並將在44 GHz上行鏈路（EHF頻段）和20 GHz下行鏈路（SHF頻段）上運行。 AEHF通信系統，將為高度優先的地面軍事，海洋軍事和空中軍事提供可長存的，全球的，安全的，受保護的和抗干擾的通信。的地面軍事，海洋軍事和空中軍事提供可長存的，全球的，安全的，受保護的和抗干擾的通信。
, L’Advanced Extremely High Frequency (AEHF) … L’Advanced Extremely High Frequency (AEHF) est une constellation de satellites de télécommunications militaires exploitée à l'origine par le Air Force Space Command puis depuis 2020 par son successeur, la United States Space Force. Ils servent à relayer des communications sécurisées des Forces armées des États-Unis pour répondre à la fois à des besoins tactiques et stratégiques durant des conflits y compris en cas de guerre nucléaire. Le segment spatial opérationnel repose sur la présence de six satellites en orbite géostationnaire couvrant l'ensemble du globe. Ces satellites de plus de six tonnes au lancement disposent de systèmes de communication à très haut débit (SHF et EHF). La constellation AEHF, qui remplace la série des Milstar, a commencé à être déployée en 2010 et assure une couvà être déployée en 2010 et assure une couv
, Advanced Extremely High Frequency (AEHF) i … Advanced Extremely High Frequency (AEHF) is a constellation of communications satellites operated by the United States Space Force. They are used to relay secure communications for the United States Armed Forces, the British Armed Forces, the Canadian Armed Forces, the Netherlands Armed Forces and the Australian Defence Force. The system consists of six satellites in geostationary orbits. The final satellite was launched on 26 March 2020. AEHF is backward compatible with, and replaces, the older Milstar system and will operate at 44 GHz uplink (extremely high frequency (EHF) band) and 20 GHz downlink (super high frequency (SHF) band). The AEHF system is a joint service communications system that provides survivable, global, secure, protected, and jam-resistant communications for high-prioram-resistant communications for high-prior
, 先進EHF通信衛星AEHF(Advanced Extremely High Frequency)衛星はアメリカ空軍が整備を進めている新型の軍用通信衛星システムである。
, AEHF è una Costellazione satellitare americana per le comunicazioni militari.
, Advanced Extremely High Frequency (AEHF) — … Advanced Extremely High Frequency (AEHF) — группировка спутников защищенной связи, которая обеспечивают защищенную и устойчивую к помехам связь представителей американского командования с развернутыми воинскими частями и подразделениями. По оценкам специалистов, стоимость AEHF-4 составляет около $1,8 млрд. Использовать возможности спутника смогут также союзники США, в том числе Великобритания, Канада и Нидерланды. Ожидается, что всего будет произведено семь аппаратов этого типа.дет произведено семь аппаратов этого типа.
|
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Advanced Extremely High Frequency
, 先進EHF通信衛星
, 先进极高频通信卫星
, Advanced Extremely High Frequency System
|
