摘要
水汽的监测,是GNSS应用中一个重要的方向。本文旨在分析不同的约束条件,对匈牙利地区水汽层析的影响。本文根据匈牙利地区的GNSS数据,分别采用4种不同的约束形式,对水汽的三维分布进行了重建实验。实验结果表明,4种约束形式中,水平约束的平均相对误差最小,约为1.9%,并且回归方程的拟合度也最好。因此,得出结论,匈牙利地区水平约束在水汽层析重建中的效果最好,可广泛应用于当地的水汽三维监测。
Water vapor monitoring is very important in the field of GNSS applications. This paper aims to analyze of the impact of different constrains on atmospheric water vapor tomography in Hungary. We use the GNSS data all over the Hungary to conduct water vapor tomography with four constraints respectively. Results show that the mean accuracy is 1. 9% with horizontal constraints and the goodness of fit of regression equation is also good enough. Therefore,we can draw a conclusion that the horizontal constraints are the best and can be widely applied to monitoring the water vapor distribution in Hungary.
作者
严宇翔
胡伍生
YAN Yuxiang;HU Wusheng(School of Transportation,Southeast University,Nanjing 211189,China)
出处
《测绘与空间地理信息》
2020年第2期5-7,11,共4页
Geomatics & Spatial Information Technology
基金
国家自然科学基金(41574022)
江苏省研究生创新项目基金(KYLX15_0160)资助。
