| 地基GPS遥感天顶水汽含量方法研究 |
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| 引用本文： | 张瑞, 宋伟伟, 朱爽. 地基GPS遥感天顶水汽含量方法研究[J]. 武汉大学学报 ( 信息科学版), 2010, 35(6): 691-693. |
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| 作者姓名： | 张瑞 宋伟伟 朱爽 |
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| 作者单位： | 1武汉大学测绘学院,武汉市珞喻路129号,430079;2武汉大学卫星导航定位技术研究中心,武汉市珞喻路129号,430079 |
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| 基金项目： | 国家自然科学基金资助项目(40774008,40721001)；国家973计划资助项目(2006CB701301) |
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| 摘 要： | 利用IGS提供的精密星历及精密钟差,分别采用卡尔曼滤波法、双差法对天顶对流层延迟进行估计,并与IGS提供的测站天顶延迟进行对比。根据所解算的天顶对流层延迟,利用经验模型求解天顶干延迟,最后分离出天顶湿延迟,进行大气可降水分的求解。
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| 关 键 词： | 对流层天顶延迟 水汽含量 卡尔曼滤波 双差法 |
| 收稿时间： | 2010-04-27 |
| 修稿时间： | 2010-04-27 |
Remotely Sensing Atmosphere Water Vapor with Ground-Based GPS |
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| ZHANG Rui, SONG Weiwei, ZHU Shuang. Remotely Sensing Atmosphere Water Vapor with Ground-Based GPS[J]. Geomatics and Information Science of Wuhan University, 2010, 35(6): 691-693. |
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| Authors: | ZHANG Rui SONG Weiwei ZHU Shuang |
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| Affiliation: | 1School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;2Research Center of GNSS,Wuhan University,129 Luoyu Road,Wuhan 430079,China |
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| Abstract: | We study the ground-based GPS zenith water vapor remotely sensing theory,and propose the double difference method for ZTD estimation with IGS precise ephemeris provided and precision clock error.We use a Kalman filtering method and a double-difference method to estimate the ZPD,respectively.We compare the results with zenith delay provided by IGS stations.The results calculated with two methods and provided by the IGS trend of the same epoch with the largest difference doesn’t exceed 2 cm.According to the solution of ZTD,we use empirical models to solve ZHD,and isolate ZWD.Finally,we carry out the solution of sub-atmospheric precipitation. |
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| Keywords: | ZTD water vapor content Kalman filter double-difference method |
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