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GPS 系统是由美国国防部着手研制的一种军事性质的全球导航定位系统,虽然它也对民用载体提供定位信息,但只有美国及其盟国的武装部队才能获得系统的最高定位精度(10米以内)。海湾战争前,美国政府原打算实施一项称为“选择性获取”的计划,根据这项计划,非军
The GPS system is a military-type global navigation and positioning system developed by the U.S. Department of Defense. Although it also provides localization information on civilian carriers, only the United States and its allied armed forces can obtain the highest system positioning accuracy (within 10 meters ). Before the Gulf War, the U.S. government originally planned to implement a plan called “selective acquisition.” Under the plan, the non-military