G-Nut/Anubis在海洋站GNSS业务化观测数据质量检核中的应用研究

Research on the application of G-Nut/Anubis in the quality check of GNSS operational observation data at ocean stations

本文针对海洋GNSS连续运行参考站网数据质量检核问题,选取北海区老虎滩、东海区朱家尖和南海区北海站的GNSS连续运行参考站2022年各季度数据,利用G-Nut/Anubis软件进行质量检核,结果表明各站数据完整率、周跳比、多路径影响等指标均满足相关要求,同时以朱家尖站为例对质检指标进行可视化,详细分析了其数据质量。在此基础上,为解决连续运行站海量数据批量检核问题,基于Matlab APP Designer平台开发了以Anubis软件为基础的海洋站GNSS数据质量检核工具箱OGQC,并利用朱家尖站2022年全年的数据验证了其检核功能的平稳性和可靠性,结果显示OGQC工具箱可以满足业务化运行对数据质量检核指标批处理、可视化监控和信息化管理的需要,可提供各站详细的质量检核结果,为数据编辑、剔除等预处理提供参考,为后续高精度数据处理工作提供高质量的输入数据。

Aiming at the problem of data quality check of Marine GNSS continuous operation reference station network,this paper selects the 2022 quarterly data of GNSS continuous operation reference stations in LaoHutan,Zhujiajian,and Beihai,and uses G-Nut/Anubis software for quality check.The results show that the data integrity rate,cycle jump ratio and multi-path influence of each station meet the relevant requirements.Meanwhile,the quality control index of Zhujiajian Station is visualized and the data quality is analyzed in detail.On this basis,in order to solve the problem of batch checking of massive data of continuous operation stations,OGQC,a GNSS data quality checking toolbox for ocean stations based on Anubis software,was developed based on Matlab APP Designer platform,and the stability and reliability of its checking function was verified by using the data of Zhujiajian Station in 2022.The results show that OGQC toolbox can meet the needs of batch processing,visual monitoring and information management of data quality check indicators in business operation,and can provide detailed quality check results of each station,provide reference for data editing,elimination and other pre-processing,and provide high-quality input data for subsequent high precision data processing.