美国空军官员已经开始着手gps的下一步骤，上个月美国空军授权雷神公司研发下一代全球定位系统控制部分，又称为ocx。

Air Force officials took the next step in that process when they awarded a contract last month to Raytheon Company for the next Generation GPS Control Segment, commonly referred to as OCX.

youdao

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)。

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).

youdao

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)。

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).

youdao