GPS, or global positioning system, is a satellite-based navigation system made up of a network of 24 satellites.

或者说全球定位系统，是一种基于24颗卫星网络的卫星导航系统。

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The blind adaptive beamforming algorithms using PN code are studied in this paper, based on the smart antenna anti-jaming application in satellite navigation and position system receiver.

本文基于卫星导航定位系统接收机的智能天线抗干扰应用背景，研究了利用PN码的盲自适应波束形成算法。

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In this paper, making full use of the constraint of constellation structure, an autonomous navigation method of constellation based on inter-satellite measurement was studied.

本文充分利用星座本身构成的空间约束，研究了基于星间观测的星座自主导航方法。

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From broadband Internet to latest-generation wireless technologies, from aeronautical and maritime navigation to radio astronomy and satellite-based meteorology, from convergence in fixed-mobile phone, Internet access, data, voice and TV broadcasting to next-generation networks, ITU is committed to connecting the world.

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