GNSS三级观测网整体平差策略分析

Analysis of Overall Adjustment Strategy for GNSS Three-level Observation Network

针对三级观测网分区平差过程中测区之间没有关联、空间跨度和时间跨度大的问题,研究整网数据平差处理的方法,通过设计大规模整网平差方案,解决分区平差带来的区域化差异,消除各个三级观测网子网之间的系统性偏差,利用三级观测网在施测过程中联测的部分高等级区域网点作为外部检核点,分析整体平差的精度。

The method of data adjustment of three-level observation network was studied in the paper for the problem that there was no correlation,space span and time span between measurement areas in the process of regional adjustment.By designing large-scale network adjustment schemes,the regionalized differences brought about by the regional adjustment were resolved,and the systematic deviations between the three levels of observation networks were eliminated.The accuracy of the overall adjustment was analyzed by using some high-level regional points measured by the three-level observation network as external inspection points during the test process.