华北地区GPS形变监测网的建立与精度分析

高精度，大规模的ＧＰＳ网在观测中采集了大量的数据，为了从中获得高精度的成果，在数据处理中有许多问题需要探讨，本文提出了建立误差函数对数据进行筛选的方法收到了较好的效果。在网平差前，对平差网进行优化设计是必要的。本文提出了平差网优化设计的三条原则和优化程度，它对确定平差网的最佳方案，提出平差后成果的精度具有普遍意义。

THE ESTABLISHMENT AND ACCURACYANALYSIS OF THE GPS DEFORMATION MONITORINGNETWORK OF NORTH CHINA

:A huge amount of data has been collected from observations of a highly accurate and large-scale GPS network. In order to acquire result of high quality, many problems in data processing have to be discussed. In the formation of error functions, better result has been achieved by using the method of data screening proposed in this paper. Optimum design of network adjustment is indispensable before carrying out the adjustment. Three princi ples and optimum program of the design of network adjustment have been proposed in this paper. They have general significance in determing the best scheme of network adjustment and increasing the accuracy of adjiuted results.