| 利用GPS观测反演三峡地区对流层湿延迟的分布及变化 |
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| 引用本文： | 李征航,徐晓华,罗佳,朱智勤.利用GPS观测反演三峡地区对流层湿延迟的分布及变化[J].武汉大学学报(信息科学版),2003,28(4):393-396. |
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| 作者姓名： | 李征航 徐晓华 罗佳 朱智勤 |
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| 作者单位： | 武汉大学测绘学院,武汉市珞喻路129号,430079 |
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| 摘 要： | 利用三峡地区 8个监测点连续三天的监测数据 ,联合 3个IGS站在此期间的观测 ,反演了各监测点对流层上空的天顶总延迟ZTD ,利用外推的地表气压资料由模型分离出其中的静力学延迟ZHD ,得到天顶湿延迟ZWD含量 ,并对湿延迟变化趋势线进行了分析。通过对该区域短时间内每间隔两小时湿延迟分布图的分析 ,探讨了利用地基GPS气象原理在短时间内观测大气水汽分布及其变化的可行性
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| 关 键 词： | 地基GPS气象 ZHD ZTD ZWD |
| 文章编号： | 1671-8860(2003)04-0393-04 |
| 修稿时间： | 2003年3月20日 |
Inversion of the Distribution and Variation of ZWD over the Three Gorge Area with GPS Observation |
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| LI Zhenghang,XU Xiaohua,LUO Jia,ZHU Zhiqin.Inversion of the Distribution and Variation of ZWD over the Three Gorge Area with GPS Observation[J].Geomatics and Information Science of Wuhan University,2003,28(4):393-396. |
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| Authors: | LI Zhenghang XU Xiaohua LUO Jia ZHU Zhiqin |
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| Institution: | LI Zhenghang 1 XU Xiaohua 1 LUO Jia 1 ZHU Zhiqin 1 |
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| Abstract: | With the continuous GPS monitoring data of the eight points of the Three Gorge area, the Zenith Total Delay over each points are extracted out. When processing the GPS data, we make use of the observation data of three IGS stations to minimize the correlation between ZTDs. After separating the zenith hydrostatic delay with the extrapolated surface pressure and Saastanmonien model, we get the zenith wet delay (ZWD). The ZWD sequential lines of all points are consistent. After analyzing the ZWD distribution figures of 8 hours in this area, some information of variation of the water vapor can be obtained. The feasibility of monitoring water vapor distribution and variation with ground-based GPS meteorology is discussed. Some conclusions and suggestions are obtained. |
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| Keywords: | ground-based GPS meteorology ZHD ZTD ZWD |
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