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| 基于GPS非差技术近实时获取对流层延迟 | |
| 引用本文： | 李黎,匡翠林,朱建军,陈永奇,龙四春,何原荣.基于GPS非差技术近实时获取对流层延迟[J].测绘科学,2012,37(2):22-25. |
| 作者姓名： | 李黎 匡翠林 朱建军 陈永奇 龙四春 何原荣 |
| 作者单位： | 1. 湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室,湖南湘潭411201;中南大学测绘与国土信息工程系,长沙4100083 2. 中南大学测绘与国土信息工程系,长沙,4100083 3. 中南大学测绘与国土信息工程系,长沙4100083;香港理工大学土地测量与地理资讯学系,香港 4. 湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室,湖南湘潭,411201 5. 厦门理工学院空间信息科学与工程系,厦门,367024 |
| 基金项目： | 国家自然科学基金资助项目(40974007,41004012,41004002);中南大学前沿研究计划(2009QZZD002) |
| 摘 要： | 本文提出一种近实时获取高精度对流层延迟(Zenith Tropospheric Delay,ZTD)的方法。该方法基于全球GPS参考站网络的非差观测值数据和IGU预报产品(卫星轨道和ERP),使用GPS非差技术和卡尔曼滤波近实时估计各参考站的高精度ZTD。将该方法应用于香港GPS参考站网得到的ZTD与基于事后技术计算的ZTD进行比较后发现,两者的平均偏差均优于5mm,RMS均优于6mm。 |
| 关 键 词： | 近实时 对流层延迟 非差 水汽 |
Near Real Time Acquisition of Tropospheric Delay Based on the GPS Un-differenced Technology |
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| LI Li , KUANG Cui-lin , ZHU Jian-jun , CHEN Yong-qi , LONG Si-chun , HE Yuan-rong.Near Real Time Acquisition of Tropospheric Delay Based on the GPS Un-differenced Technology[J].Science of Surveying and Mapping,2012,37(2):22-25. | |
| Authors: | LI Li KUANG Cui-lin ZHU Jian-jun CHEN Yong-qi LONG Si-chun HE Yuan-rong |
| Institution: | ④(①Hunan Provincial Key Laboratory of Clean Coal Resources Utilization and Mine Eviromental Protection,Hunan University of Science and Technology,Xiangtan 411201,China;②Department of Survey Engineering and Geomatics,Central South University,Changsha 410083,China;③Department of Land Surveying and Geo-informatics,Hong Kong Polytechnic University,Hong Kong,China;④Department of Spatial Information Science & Engineering,Xiamen University of Technology,Xiamen,361024,China) |
| Abstract: | This paper presented a method for near real time obtaining the accurate Zenith Tropospheric Delay(ZTD).The method,which was based on the un-differenced observation data of global GPS reference station network and the IGU predicted products(satellite orbit and ERP),used un-differenced GPS technology and Kalman filter to estimate the near real time accurate ZTD of reference stations.The method was applied to the Hong Kong GPS Reference Station Network,the obtained ZTD was compared with the ZTD calculated by the technique,and it was found that the average deviations were both better than 5mm,RMS were both better than 6mm. |
| Keywords: | near real time zenith tropospheric delay un-differenced water vapor |
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