JPALS, designed and developed by Raytheon under a U. S. Navy contract, is an all-weather, all-mission, all-user landing system based on local area differential Global Positioning system (GPS).
由雷神公司在美海军的合同下设计并开发的联合精确进场和着陆系统(JPALS)，是一种全天候、全任务、全用户的着陆系统，基于当地的全球定位系统(GPS)。
The Global Positioning System (GPS) of U. S is a satellite navigation and position system that now has the best performance , the highest precision of position and it is widely applied in everywhere.
美国全球定位系统GPS是目前性能最完善、定位精度最高、应用最广泛的卫星导航定位系统。
The Global Positioning System (GPS) of U. S is a satellite navigation and position system that now has the best performance , the highest precision of position and it is widely applied in everywhere.
美国全球定位系统GPS是目前性能最完善、定位精度最高、应用最广泛的卫星导航定位系统。
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