RINEX数据结构对GAMIT基线解算和效率的影响

The Impact of RINEX Data to GAMIT Baseline Solver and Efficiency

RINEX数据格式是利用GPS接收机的数据进行GAMIT基线解算的一个重要环节。说明RINEX格式的主要观测数据文件和导航信息文件的内容和特征,分析针对Hemisphere GPS接收机的二进制格式数据转换为RINEX格式后,再使用C#编程简化转换后的RINEX数据采样频率,简化后的数据经GAMIT各模块进行基线解算,在解算结果比较中发现起算坐标的准确性会影响基线解算的精度,同时大数据量采样间隔的提高基本不影响一般短基线而且能提高解算效率,但在高精度预警测量上采样间隔不易提高。

It is an important part that the RINEX format data use the data of the GPS receiver to the GAMIT baseline solver.The content and features of the RINEX format of observation data files and navigation information file are described,the data from binary format conversion to RINEX format for Hemisphere GPS receiver is analyzed, then C# programming is used to simplify the sampling frequency for RINEX converted data,the simplified data via baseline solver is obtained under each module of GAMIT.Through the comparison with resolving results, the accuracy of starting coordinates affects the accuracy of baseline solution,while improving the sampling interval of a large amount of data does not affect the basic general short baseline but the efficiency of the solver can be improved,but the sampling interval is difficult to improve on the precision warning measurement.