GPS satellite position calculation is the key link of GPS navigation and positioning, calculating satellite coordinates quickly and accurately is important to improve positioning speed and precision.

GPS卫星位置计算是进行GPS导航定位的关键环节，快速准确地计算出卫星坐标，对提高GPS定位精度和速度有着重要意义。

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According to the models of the link length and visibility for multiple satellite constellations, the multi-layer mathematic model of the satellite network was built in this paper.

根据多层卫星星座网络的链路长度与可见性模型，建立了多层卫星网络的数学模型，并据此提出了一种适于多层卫星网络应用的层次路由协议。

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When he's on the road, a communications team arrives at each location to set up a private phone network, as well as a satellite link to keep Alwaleed in touch with his office in Riyadh and his far-flung holdings.

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And rather than wait for Nitel to deliver a high capacity link to connect him and his customers to the backbone of the internet, he has opted for a direct satellite link to the United States.

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Wave Gliders collect enormous amounts of data and crunch the numbers distilling 4 gigabytes of raw data to a kilobyte of relevant information a client wants, for instance and then activate their Iridium satellite link to beam the result to servers on land.

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