大规模GNSS基准站网快速同步处理方法研究

Study on Fast Processing Method for Large Scale GNSS Network

目前我国GNSS连续运行基准站网已基本建设完毕,全国范围内建设完成约2000个GNSS连续运行基准站。随着站点规模的加大,数据计算的效率也迫切需要提高,采用传统的高精度数据处理软件已适应不了大规模GNSS网的数据解算要求。本文基于BERNESE5.2软件研究了我国"陆态网络工程"260个基准站的大规模GNSS网同步数据处理方法,通过修改源程序及利用并行计算技术,成功实现了陆态网络基准站快速、高效、高精度的数据计算能力。实例验证表明,陆态网络单天260个站的数据在无需分区的情况下,可在1 h内获得全球框架下的约束解,解算的框架点坐标精度在毫米量级,大大提高了国家数据中心的大规模GNSS网数据处理能力。

At present,there are almost 2000 GNSS CORS stations across China as the construction of GNSS continuous operation reference station network nearly completed.With the increase of the amount of the sites,the efficiency of GNSS data processing urgently need to improve,while the traditional high precision data processing software represent the deficiency to compute so many more data.Based on BERNESE5.2 software,the data processing method of large scale GNSS network amount to 260 stations by CMONOC project is studied.The fast,efficient and high precision data computing capability had been got by modifying source program and utilizing the parallel computation technology.The experiment shows that the data of 260 stations in a single day can be processed within 1 hour without divided into sub-net to get the daily constrained coordinate in ITRF2008 frame with a millimeter scale accuracy,which highly improves the data processing capability of large scale GNSS network for national data center.