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)。

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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)。

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The research on the scheme of Landing Guidance System based on electro-optical sensors is carried on first.

本文研究了基于光电成像的着陆引导系统方案。

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