| 地基GPS技术遥感香港地区大气水汽含量 |
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| 引用本文： | 刘焱雄,H B Iz,陈永奇.地基GPS技术遥感香港地区大气水汽含量[J].武汉大学学报(信息科学版),1999,24(3):245-248. |
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| 作者姓名： | 刘焱雄 H B Iz 陈永奇 |
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| 作者单位： | 香港理工大学土地测量与地理资讯学系,香港九龙红石勘 |
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| 摘 要： | 提出了分段多项式方法计算大气水汽含量，并结合无线电高空气象探测资料，分析并评估了地基ＧＰＳ遥感技术的精度。香港地区的可降水份计算结果表明，地基ＧＰＳ遥感技术的精度为１ ｍ ｍ ～２ ｍ ｍ
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| 关 键 词： | GPS 水汽含量 可降水份 |
Monitoring the Water Vapor Content in the Atmosphere in Hong Kong Through Ground-based GPS Technique |
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| Liu Yanxiong,H B Iz,Chen Yongqi.Monitoring the Water Vapor Content in the Atmosphere in Hong Kong Through Ground-based GPS Technique[J].Geomatics and Information Science of Wuhan University,1999,24(3):245-248. |
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| Authors: | Liu Yanxiong H B Iz Chen Yongqi |
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| Abstract: | Ground based GPS technique is rapidly growing in remote sensing water vapor content in the atmosphere. In this paper, the problem of extracting water vapor content information from GPS data is examined. A new approach, namely as piecewise linear method has been proposed in the estimation of precipitable water vapor through Hong Kong DGPS station observations. Considering no meteorological measurements, a simple interpolated method weighted by distance is developed to perform the interpolation using the meteorological observations around Hong Kong DGPS station. To evaluate the attainable accuracy of water vapor content sensed by GPS, radiosonde data, which are collected locally by Hong Kong Observatory, are used to calculate the precipitable water vapor. One month results of precipitable water vapor from both ground based GPS technique and radiosonde method exhibit very good agreement within 1 mm~2 mm. |
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| Keywords: | GPS water vapor content precipitable water vapor |
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