The Launch and Test Range System includes ground-based surveillance, navigation, flight operations and analysis, command and control, communications and weather assets for space missions.
发射和测试系统包括空间飞行的地面系统任务的监视，导航，飞行操作和分析，指挥和控制，通信和气象资产。
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General Dynamics, under contract to Lockheed Martin, has overall responsibility for the ground-based segment of the MUOS system.
通用动力公司将MUOS系统的地基部分分包给洛克希德马丁公司，现已全部完成。
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According to NASA, "Astronomers using ground-based telescopes to hunt for planets outside our solar system, dubbed extrasolar planets, have nabbed more than a hundred alien worlds."