| 远距离高精度GPS潮汐观测及垂直基准转换研究 |
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| 引用本文： | 赵建虎, 董江, 柯灝, 张红梅. 远距离高精度GPS潮汐观测及垂直基准转换研究[J]. 武汉大学学报 ( 信息科学版), 2015, 40(6): 761-766. DOI: 10.13203/j.whugis20130314 |
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| 作者姓名： | 赵建虎 董江 柯灝 张红梅 |
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| 作者单位： | 1武汉大学测绘学院,湖北武汉,430079;2武汉大学中国南极测绘研究中心,湖北武汉,430079;3武汉大学动力与机械学院,湖北武汉,430072 |
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| 基金项目： | 国家自然科学基金资助项目(41376109,41176068,40976061)；塘沽科技创新及产业化基金资助项目(2012CYH05-04) |
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| 摘 要： | 为实现远岸潮汐精确监测及潮位海图高程转换,基于GPS事后动态处理技术(PPK)开展了远距离高精度潮位观测、提取及垂直基准面确定和转换模型构建方法研究。分别探讨了在锚定和走航情况下瞬时水面高程信号改正方法及潮位有效信息提取的最优截止频率,并给出了在不同情况下深度基准面大地高的计算方法模型及区域无缝深度基准面大地高构建模型。在实际试验中,基线距离在100km范围内,获得了基于深度基准的GPS潮位,精度优于10cm。
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| 关 键 词： | 远距离GPS潮位观测 GPS潮位提取 深度基准大地高 |
| 收稿时间： | 2013-07-09 |
| 修稿时间： | 2015-06-05 |
High Precision GPS Tide Measurement Method in a Far-Distanceand Transformation Model for the Vertical Datum |
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| ZHAO Jianhu, DONG Jiang, KE Hao, ZHANG Hongmei. High Precision GPS Tide Measurement Method in a Far-Distanceand Transformation Model for the Vertical Datum[J]. Geomatics and Information Science of Wuhan University, 2015, 40(6): 761-766. DOI: 10.13203/j.whugis20130314 |
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| Authors: | ZHAO Jianhu DONG Jiang KE Hao ZHANG Hongmei |
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| Affiliation: | 1School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China;2Chinese Antarctic Center of Surveying and Mapping,Wuhan University,Wuhan 430079,China;3School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China |
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| Abstract: | Based on postprocessor GPS PPK technology,we carried out the research on long-distance tide ob-servation and extraction,the determination of vertical datum and the construction of vertical-datum transfor-mation model.A model for calculating a height series for instantaneous water surface was researched,mean-while,the best cut-off periods for tidal extraction for anchored and on-the-fly status are proposed.Finally,based on long-term anchor PPK and tide-gauge tidal levels for different situations,a determination ofMSL and chart datum as well as the models for calculating their geodetic heights were investigated andproposed.A method to establish a seamless chart datum geodetic height model is presented.An testproject showed that the accuracy of GPS tide level reference to chart datum measurement method aspresented in paper can be better than 10cm when the GPS baseline is less than 100km. |
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| Keywords: | far-distance GPS tide measurement GPS tide exaction chart datum geodetic height |
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