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美国终于建成２４颗卫星的ＧＰＳ导航星座１９９４年３月９日夜，一枚德尔它─２火箭从卡纳维拉尔角空军站起飞，２５分钟后，把一颗ＧＰＳ卫星送入预定轨道。这次发射标志着美国由２４颗卫星组成的ＧＰＳ导航星座已最终建立，今后，美国将不再发射新ＧＰＳ卫星，如果一颗...
The United States finally built a GPS navigation constellation of 24 satellites On the night of March 9, 1994, a Deere-2 rocket took off from Cape Canaveral Air Force Station and sent a GPS satellite to a scheduled orbit 25 minutes later. The launch marks the final founding of a GPS navigation constellation of 24 satellites in the United States. In the future, the United States will no longer launch new GPS satellites if ...