地球上空将形成两套全球卫星定位系统,两套系统未必形成竞争,却会给地面上的人们提供更大的选择空间 2005年12月28日清晨5点19分(格林尼治时间),哈萨克斯坦境内拜科努尔航天发射场,由欧洲航天局主持的“伽利略”卫星定位系统首颗实验卫星顺利发射升空。虽然“伽利略”系统首批两颗实验卫星并不包括在该计划的30颗正式卫星之列 (它们主要用于技术测试),但其发射标志着“伽利略”计划开始进入实施阶段。 Two Global Positioning Systems (GPS) systems will be formed over the Earth. The two systems may not necessarily compete, but will provide more space for people on the ground. At 05:19 (GMT) on December 28, 2005, in the territory of Kazakhstan The first experimental satellite of the Galileo satellite-based positioning system hosted by the European Space Agency was launched successfully at the Baikonur space launch site. Although the first two experimental satellites in the “Galileo” system were not included in the program’s 30 official satellites, which are mainly used for technical testing, the launch marked the start of the “Galileo” project.