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美国国防部认为在核威胁情况下,对武装力量指挥最可靠的方法是利用卫星通信。因此美军对卫星通信非常重视,投资很大,例如美国国防部在1976年～1981年为军用卫星通信系统的投资是:空军占21亿美元,海军8.04亿美元,陆军8.27亿美元,下一代军用卫星通信系统将投资60～100亿美元,美国军用卫星通信系统的通信容量占整个国防通信容量的80％。
The Department of Defense believes that the most reliable way to command the armed forces under nuclear threat is to use satellite communications. Therefore, the U.S. military attaches great importance to satellite communications and invests a lot. For example, the U.S. Department of Defense invested in military satellite communications systems between 1976 and 1981 at a rate of $ 2.1 billion for the Air Force, $ 804 million for the Navy, $ 827 million for the Army and $ 827 million for the next generation of military The satellite communications system will invest between 60 billion U.S. dollars and 100 million U.S. dollars. The communications capacity of the U.S. military satellite communications system will account for 80% of the national defense communications capacity.