... geocentric coordinates system 地心坐标系统 projective coordinates system 射影坐标系 geodetic coordinates system 大地坐标系 ...
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通过地面网与卫星网的联合平差，以改善网的精度和建立高精度的地心坐标系统，是当前大地测量的一项重要任务。
It is an important mission of Geodesy to improve an accuracy of control networks and to establish the geocentric coordinate system via combined satellite and terrestrial network adjustment.
根据GPS导航和SINS导航的基本关系，在地心地固坐标系下建立了完整的深层全组合导航系统的数学模型。
According to the basic theory of GPS navigation and SINS navigation, the comprehensive mathematic models of integrate navigation system is built under Earth Center Fixed coordinate system.
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