| GPS监测水汽与水汽辐射计数据的对比研究 |
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| 引用本文： | 陈俊平,王解先,陆彩萍.GPS监测水汽与水汽辐射计数据的对比研究[J].大地测量与地球动力学,2005,25(3):125-128. |
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| 作者姓名： | 陈俊平 王解先 陆彩萍 |
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| 作者单位： | 同济大学测量与国土信息系,上海,200092;同济大学测量与国土信息系,上海,200092;现代工程测量国家测绘局重点实验室,上海,200092;上海瑞恒房地产评估事务所有限公司,上海,200021 |
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| 摘 要： | 针对水汽辐射计观测数据和并址的GPS观测数据，用GAMIT软件求解了台站的天顶总延迟和湿项延迟。运用湿项延迟与水汽含量之间的转换关系，对GPS监测的大气可降水量与水汽辐射计观测的水汽含量进行了对比研究，得出结果：由GAMIT解算出的水汽含量与WVR观测值的差值平均值为0．02mm，均方差为0．02mm,由气象文件求出的水汽含量与WVR观测值的差值平均值为0．03mm，均方差为0．02mm。表明用地面GPS监测大气水汽含量是完全可行的。
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| 关 键 词： | 水汽辐射计 天顶总延迟 湿项延迟 可降水量 GPS数据 |
| 文章编号： | 1671-5942(2005)03-0125-04 |
| 修稿时间： | 2004年11月11 |
STUDY ON COMPARISON BETWEEN WATER VAPOR VALUE CALCULATED BY GPS AND OBSERVED BY WVR |
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| Chen Junping,Wang Jiexian,Lu Caiping.STUDY ON COMPARISON BETWEEN WATER VAPOR VALUE CALCULATED BY GPS AND OBSERVED BY WVR[J].Journal of Geodesy and Geodynamics,2005,25(3):125-128. |
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| Authors: | Chen Junping Wang Jiexian Lu Caiping |
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| Abstract: | This paper analyzes the precipitable water vapor value calculated from GPS data and observed by WVR (Water Vapor Radiometer). Using GAMIT,we have calculated the tropospheric delay and obtained the wet zenith delays over the station.Following the discussed relation between wet zenith delay parameters and precipitable water vapor,we have calculated the precipitable water vapor over the area.Comparing it with what is observed by WVR,we get the result that the average diffrence is 0.02 mm with RMS of 0.02 mm. At the same time,we have calculated the precipitable water vapor using the weather observations on ground.It shows that the average diffrence is 0.03 mm with RMS of 0.02 mm. So with the ground-based GPS, we can monitor the precipitable water vapor continuously and effectively. |
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| Keywords: | water vapor radiometer tropospheric delay wet zenith delay precipitable water vapor GPS data |
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