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1·A error analysis of the recurrent algorithm of Least Squares estimate for satellite geodesy is given in this paper.

本文就卫星测地情形，对最小二乘估计的递推算法进行误差分析。

2·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.

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。

3·One of the fundamental scientific objectives of modern geodesy is to determine the high precision and high resolution earth gravity field. The satellite gravity project is just for this object.

确定高精度和高分辨率地球重力场模型是现代大地测量的基本目标之一，卫星重力计划就是基于这一目标实施的。