NPP is a risk reduction mission for NPOESS, and will be the first major element of the next generation U.S. Earth observation system when it is launched in 2010.

NPP是NPOESS的风险降低任务，将成为2010年发射的下一代美国地球观测系统的首个主要组成部分。

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The study of multiple satellite scheduling that satisfies complicated satellite observation requirements is of great importance in improving the supporting capability of an earth observation system.

研究面向复杂任务需求的多卫星联合下的任务规划技术，对于提高对地观测系统的保障能力具有重要意义。

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SSNDR will consist of several earth observation satellites operating in different orbits and ground application system, obtaining information of earth environment and natural disaster.

这个系统由多颗不同轨道、不同种类的地球观测卫星和地面应用系统组成，以获取地球环境和灾害信息。

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We are also working internationally with China, the European Union, South Africa, and 79 other nations through the intergovernmental Group on Earth Observations (GEO) to implement a Global Earth Observation System of Systems, or GEOSS, by 2015.

WHITEHOUSE: Office of Science and Technology Policy Blog

Satellites support phones, pagers, television broadcasts, Earth observation and the global positioning system.

ECONOMIST: SpaceShipOne