基于Python设计的TEQC数据质量可视化分析软件

TEQC data quality visual analysis software based on Python design

全球卫星导航系统(GNSS)观测数据质量直接影响GNSS定位的准确性与可靠性.为获取良好的观测数据,用户一般利用由美国卫星导航系统与地壳变形观测研究大学联合体(UNAVCO Facility)开发的TEQC软件进行数据预处理.由于TEQC是基于DOS系统的命令行软件,存在交互性差、可视化功能薄弱等缺陷.目前虽有QCVIEW、CF2PS、QC2SKY等第三方绘图工具实现绘图功能,但上述工具已不支持TEQC 2013-03-15以后版本生成的compact3格式结果文件.因此,利用Python语言,对TEQC的质量检核模块进行可视化设计,编写了一款质量可视化软件TPP(TEQC Plot of Python).经过软件性能测试分析,该软件能够反映卫星在不同时刻、方位角、高度角的质量检核指标情况.

The quality of the Global Navigation Satellite System(GNSS)observation data directly affects the accuracy and reliability of GNSS positioning.In order to obtain observation data of good quality,users usually use TEQC software to preprocess the data.Because TEQC is a command line software based on DOS system,it has some defects such as poor interaction and weak visualization function.At present,although there are third-party drawing tools such as QCVIEW,CF2PS and QC2SKY that can realize the drawing function,these tools no longer support the Compact3 format result files generated by TEQC after March 15,2013.Therefore,this paper uses Python language to visually design the quality inspection module of TEQC,and compiles a quality visualization software TPP(TEQC Plot of Python).The software performance test and analysis show that the software can reflect the satellite quality check index at different time,azimuth and altitude angle.