| 地基GPS水汽实时监测系统及其气象业务应用 |
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| 引用本文： | 李国平, 陈娇娜, 黄丁发, 郭洁. 地基GPS水汽实时监测系统及其气象业务应用[J]. 武汉大学学报 ( 信息科学版), 2009, 34(11): 1328-1331. |
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| 作者姓名： | 李国平 陈娇娜 黄丁发 郭洁 |
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| 作者单位： | 1成都信息工程学院大气科学学院,成都市西南航空港经济开发区学府路一段24号,610225;2西南交通大学测量工程系,成都市二环路北一段111号,610031;3中国气象局成都高原气象研究所,成都市光华村街20号,610071 |
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| 基金项目： | 中国气象局成都区域气象中心区域重大科研业务资助项目；成都信息工程学院自然科学与技术发展基金资助项目；成都市气象局业务技术研究项目；中国气象局成都高原气象开放实验室基金联合资助项目 |
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| 摘 要： | 给出了接收机五参数定位模型和精度评定的相关公式以及接收机C/A码伪距观测量精度评定方法和经验公式。设计了两组试验,分别是GPS信号能量为42dBHz和32dBHz时的950个及600个启动测试算例。数据分析结果表明,即使在高能量42dBHz的情况下,五参数的成功率达到了90%,一倍中误差的定位精度基本上在30～50m左右;在32dBHz时的成功率仅有60%,一倍中误差定位精度为60～80m左右。为了有效地提高5参数的解算成功率,需要提高卫星星历精度(包括卫星轨道精度和钟差精度)和大气延迟模型的改正精度。另外,还需要提高接收机基带C/A码的测量精度,包括中频量化精度和C/A码环跟踪精度。
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| 关 键 词： | GPS基带 五参数 导航定位 最小二乘 |
| 收稿时间： | 2009-09-18 |
| 修稿时间： | 2009-09-18 |
Real-time Monitoring System of Precipitable Water Vapor Derived from Ground-based GPS and Its Applications in Meteorology |
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| LI Guoping, CHEN Jiaona, HUANG, Dingfa. Real-time Monitoring System of Precipitable Water Vapor Derived from Ground-based GPS and Its Applications in Meteorology[J]. Geomatics and Information Science of Wuhan University, 2009, 34(11): 1328-1331. |
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| Authors: | LI Guoping CHEN Jiaona HUANG Dingfa |
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| Affiliation: | 1College of Atmospheric Sciences,Chengdu University of Information Technology,24 Xuefu Road,Chengdu 610225,China;2Department of Surveying Engineering,Southwest Jiaotong University,111 Erhuan Road,North 1st Section,Chengdu 610031,China;3Institute of Plateau Meteorology,China Meteorological Administration,20 Guanghuacun Street,Chengdu 610071,China |
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| Abstract: | The structure of real time system of monitoring water vapor derived from ground-based water is introduced. Its applications in meteorology are analyzed based on the precipitable water vapor derived from ground-based GPS. The time series of real time GPS-PWV is retrieved from observation data of being high spatial-temporal resolution,continuous,whole day and real time supplied by GPS networks. The application system of water vapor monitoring by ground-based GPS is constructed based on that. It supplies instruction for monitoring atrocious weather and short-time weather forecast,establishes the foundation for studying spatial-temporal distribution of atmospheric water vapor and exploiting atmospheric water resource through many disciplines. |
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| Keywords: | ground-based GPS remote sensing precipitable water vapor high impact weather |
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