MG-APP: an open-source software for multi-GNSS precise point positioning and application analysis
MG-APP: an open-source software for multi-GNSS precise point positioning and application analysis
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DOI：
10.1007/s10291-020-00976-1
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发表时间：
2020-04
期刊：
影响因子：
4.9
通讯作者：
Gong Xiao;Genyou Liu;J. Ou;Guolin Liu;Shengli Wang;Aizhi Guo
中科院分区：
文献类型：
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作者：
Gong Xiao;Genyou Liu;J. Ou;Guolin Liu;Shengli Wang;Aizhi Guo
为了满足多GNSS环境下的研究和精密单点定位（PPP）需求，我们开发了一款GNSS数据处理软件——多GNSS自动精密定位软件（MG-APP）。 MG-APP是一款开源软件，可以运行在Windows/Linux/UNIX等操作系统上。它可以使用卡尔曼滤波器或平方根信息滤波器（SRIF）同时处理 GPS/GLONASS/BDS/Galileo 观测结果。与卡尔曼滤波器相比，SRIF 具有更好的数值稳定性，即使在舍入误差较大的情况下也能保持稳定的收敛性。 MG-APP具有全面、友好的图形用户界面，方便用户选择型号和设置参数。它还包含多种类型的对流层和估计模型，可以轻松分析不同模型和参数对 PPP 数据处理的影响。数据处理完成后，天顶对流层延迟、接收机时钟偏移、卫星模糊度参数、观测残差等结果将保存到文件中。用户可以进一步分析解决方案结果并轻松构建图表。
To meet the demands of research and precise point positioning (PPP) in a multi-GNSS environment, we developed a GNSS data processing software named multi-GNSS automatic precise positioning software (MG-APP). MG-APP is an open-source software that can be run on Windows/Linux/UNIX and other operating systems. It can simultaneously process GPS/GLONASS/BDS/Galileo observations using a Kalman filter or a square root information filter (SRIF). Compared to the Kalman filter, the SRIF has better numerical stability and maintains stable convergence even with a significant round-off error. MG-APP has a comprehensive and friendly graphical user interface that conveniently allows the user to select models and set parameters. It also contains several types of tropospheric and estimation models that make it easy to analyze the impact of different models and parameters on PPP data processing. After the data processing finishes, zenith tropospheric delays, receiver clock offsets, satellite ambiguity parameters, observation residuals, and other results will be saved into files. Users can further analyze the solution results and construct graphs easily.